ANATOMY TEST #4

25 July 2022
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Red bone marrow in an adult is confined to
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bones of the axial skeletal system AND a portion of the pelvis.
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In an adult, which of the following is a bone that does not contain red bone marrow? Sternum Skull Rib Vertebra Radius
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RADIUS does NOT contain red bone marrow.
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Osteogenesis imperfecta is due to the deficiency of __________ in the matrix, which makes the bones extremely brittle.
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OSTEOGENSIS IMPERFECTA = DEFIENCY of COLLAGEN in the MATRIX = makes bones VERY BRITTLE!
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Osteogenesis imperfecta (OI) is due to a defect in collagen deposition that renders bones exceptionally brittle, resulting in _________???present at birth or occurring with extraordinary frequency during childhood.
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Osteogenesis imperfecta (OI) is due to a defect in collagen deposition that renders bones exceptionally brittle, resulting in FRACTURES PRESENT AT BIRTH or occurring with extraordinary frequency during childhood.
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What condition also causes tooth deformity and hearing loss due to deformity of middle-ear bones?
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OI=COLLAGEN DEFICIT, tooth deformity and hearing loss due to deformity of middle-ear bones.
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Which osseous tissue is found on the surface of bones and composed of tightly arranged parallel osteons?
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Compact TISSUE = found on SURFACE of bones and compsed of tightly arranged PARAELLEL OSTEONS!
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What does Mineralization do?
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Mineralization = Process that extracts and REMOVES CALCIUM and PHOSPHATE from the blood plasma and PUTS and deposits calicium and phosophate into bone.
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Tendons connect _____ to _______?
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Tendons connect MUSCLE to BONE! T=MB
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Ligaments connect ______ to ______.
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bone to bone
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Tendons are similar to ligaments, however, tendons connect muscles to bones.
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Tendons are similar to ligaments, however, they tendons connect muscles to bones.
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What age group do Greenstick fractures most commonly occur and why?
What age group do Greenstick fractures most commonly occur and why?
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Greenstick fractures = INCOMPLETE FRACTURE=MOST COMMON IN CHILDREN - BECAUSE CHILD BONES = LARGER QUANTITIES of COLLAGEN!
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Why do Greenstick fractures occur more in children?
Why do Greenstick fractures occur more in children?
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Greenstick fractures=more in children because CHILD bones contain MORE COLLAGEN.
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As a child grows, what happens to the level of calcium deposited in the bones?
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As a child grows, the quantity of calcium being deposited in the bone INCREASES and fortifies the bone.
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What role does collagen play in children?
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Collagen makes bones more flexible in children as more calcium is deposited.
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What kind of fracture is one which the bone is broken into three 3 + or MORE pieces?
What kind of fracture is one which the bone is broken into three 3 + or MORE pieces?
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COMMINUTED FRACTURE = BONE is broken into 3 or MORE pieces
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What kind of fracture is an INCOMPLETE break?
What kind of fracture is an INCOMPLETE break?
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A greenstick fracture = INCOMPLETE BREAK
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What happens in non-displaced fracture?
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In a non-displaced fracture=pieces are YES anatomically aligned.
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Is a non-displaced fracture anatomically aligned?
Is a non-displaced fracture anatomically aligned?
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YES, a NON-displaced fracture = NORMAL ALIGNEMENT is anatomically aligned
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Is a displaced fracture anatomically aligned?
Is a displaced fracture anatomically aligned?
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. NO - A displaced fracture= a BREAK that does NOT anatomically align
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What does appositional growth do to the strength of the bone?
What does appositional growth do to the strength of the bone?
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Appositional growth= INCREASES the strength of bone = making the BONE THICKER!
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Is having a deficit in appositional growth life-threatening?
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NO- having a deficit appositional growth is NOT life-threatening. You would just have thinner bones, if you do not have appositional growth.A deficit of appositional bone growth
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The bones of the skull form by which type of ossification?
The bones of the skull form by which type of ossification?
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Intramembranous OSSIFICIATION = BONES of the SKULL!
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The stable reserve of calcium is stored in the form of _______________which takes time for the osteoclasts to break it down via HCl.
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The stable reserve of calcium is stored in the form of hyroxyapatite which takes time for the osteoclasts to break it down via HCl.
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To help regulate body calcium levels, bone has two reserves. The disadvantage of the stable reserve is that it _________
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To help regulate body calcium levels, bone has two reserves. The disadvantage of the stable reserve is that it *cannot easily be exchanged or released into the tissue fluid*
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Within compact bone, a central canal is found at the center of which structure?
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An osteon = contains a central canal
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What is the function of red bone marrow?
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RED BONE MARROW=PRODUCES BLOOD CELLS
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Which bone cells produce the soft organic bone matrix?
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OSTEOBLASTS = BUILD BONE and produce the SOFT organic bone matrix!
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Which type of bone growth occurs within cartilage and results in bone elongation?
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INTERSISTIAL BONE GROWTH = occurs in CARTILEGE = leds to BONE ELONGATION
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What does Interstitial growth do to bone?
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Instersitial bone growth = helps ELONGATION of BONE and occurs in CARTILEGE!
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What contains hydrogen pumps that lead to the formation of hydrochloric acid HCl?
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OSTEOCLASTS: chew up bone and breakdown the bone matrix. Osteoclasts contain HYDROGEN PUMPS that lead to the formation of hydrocholoric acid HCl!
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Osteoclasts contain hydrogen pumps--->chew up bone help form HYDROCHOLORIC ACID (HCl) , which is used for DISSOLVE BONE MATERIALS in a process called???
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Osteoclasts contain hydrogen pumps--->chew up bone help form HYDROCHOLORIC ACID (HCl) , which is used for DISSOLVE BONE MATERIALS in a process called MINERAL REABSORPTION.
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What does Mineral Deposition do?
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Mineral Deposition = DEPOSITS/ADDS mineral to bone.
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What does Mineral Reabsorption do?
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Mineral REABORPTION = REMOVES minerals from the bones.
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What is the osseous tissue matrix composed of?
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Osseous tissue matrix = composed of CALICUM PHOSPHATE!!
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Bone is considered an
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Bone = ORGAN
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What tissues are used to help form the bone organ?
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1) OSSEOUS TISSUE 2) ADIPOSE TISSUE (fat) 2) BLOOD TISSUE 3) CARTILAGE TISSUES
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How does the skeletal system help to maintain acid-base pH balance?
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The skeletal system helps maintain acid-base balance by BOTH ABSORBING ad RELEASING ALKALINE PHOSPHATE and CARBONATE SALTS!!!
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What two salts act as buffers to changes in pH?
What two salts act as buffers to changes in pH?
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Alkaline phosphate and carbonate salts act as buffers to changes in pH in the skeletal system.
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What gives bone its flexibility?
What gives bone its flexibility?
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COLLAGEN FIBERS give bone its flexibility!
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If there was no collagen, the bone would become extremely _______?
If there was no collagen, the bone would become extremely _______?
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NO collagen = no flexibility=very brittle bone.
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Which bones cells tear down the bone?
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OSTECLASTS: chew and TEAR down the bone
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What bone cells help maintain bone?
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OSTEOCYTES = maintain bone.
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What types of cells produce collagen?
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FIBROBLASTS = cells produce collagen.
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Which cells that actually build bone.
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Osteoblasts = BUILD bone!
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During the healing of a bone fracture, what bone cell produces a HARD CALLUS?
During the healing of a bone fracture, what bone cell produces a HARD CALLUS?
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During the healing of a bone fracture, OSTEOBLASTS build bone and produce a HARD CALLUS!
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What is osseous tissue?
What is osseous tissue?
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Osseous tissue = BONE tissue= type of CONNECTIVE tissue with a HARDENED MATRIX that makes up bone!
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Which hormone inhibits osteoclasts and stimulates osteoblasts to lower blood calcium levels?
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Calcitonin = hormone TONES down BLOOD CALCIUM and osteoclasts, but CALICITONIN stimulates OSTEOBLASTS to build BONE CALICIUM!
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How does Calicitonin hormone work?
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Calcitonin = hormone TONES down BLOOD CALCIUM and osteoclasts, but CALICITONIN stimulates OSTEOBLASTS to build BONE CALICIUM!
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What is osteomalacia?
What is osteomalacia?
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OSTEOMALACIA = BAD because it SOFTENS BONES in ADULTS, because losing and depletion of CALCIUM. OSTEO = BONE MAL= BAD deficiency of CALICUM = softens the bones
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Injury to the Tendons = what system?
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Injury to the Tendons = MUSCULAR SYSTEM only, not the skeletal system.
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A ruptured calcaneal - Achilles Tendon would NOT involve damage to which system?
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Injury to the Tendons = MUSCULAR system only. Achilles tendon = not involve damage to the Skeletal system.
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**Where are CENTRAL CANALS found?
**Where are CENTRAL CANALS found?
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Central Canals = COMPACT BONE = CCC, but NOT in spongy bone
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Central canal is also called?
Central canal is also called?
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Central Canal = HAVERSIAN canal found in COMPACT bone, but NOT spongy bone
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Are central canals found in spongy bone?
Are central canals found in spongy bone?
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NO - Central Canals = ONLY COMPACT bone, Central canals NOT found in spongy bone!
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Central canals are not necessary in spongy bone because of the close_____ of the marrow.
Central canals are not necessary in spongy bone because of the close_____ of the marrow.
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Central canals are not necessary in spongy bone because of the close proximity of the marrow.
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What are the ONLY 2 main components of OSSEOUS BONE TISSUE?
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OSSEOUS BONE TISSUE only 2 things: 1) BONE CELLS 2) BONE MATRIX
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Which of the following would directly affect osseous tissue?
Which of the following would directly affect osseous tissue?
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A Vitamin C deficiency = DIRECTLY affects bone and osseous tissue!
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What is the calcium-phosphate salt deposited within bone called?
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Hydroxyapatite = Calcium phosphate salt deposited within the bone tissue!
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Where does bone formation occur during endochondral ossification?
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endochondral ossification = Hyaline cartilage model
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Yellow marrow is formed by what tissue?
Yellow marrow is formed by what tissue?
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Yellow marrow = formed by ADIPOSE/FAT tissue and is found in LONG BONES!
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In an adult, a compound fracture of the __________ could lead to a "fat" embolism entering the blood stream.
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Compound fracture of the TIBIA could lead to a Fat Embolism entering the body
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The Cranium and Mandible make up your
The Cranium and Mandible make up your
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SKULL!
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CLAVICLE = your
CLAVICLE = your
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CLAVICLE = COLLARBONE
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Scapula
Scapula
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SCAPULA=shoulder bone (back of should)
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HUMERUS =
HUMERUS =
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Humerus = UPPER ARM BONE
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RADIUS =
RADIUS =
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Radius = LOWER ARM BONE - THUMB SIDE
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Ulna
Ulna
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ULNA = LOWER ARM bone = PINKY SIDE = medial bone of the forearm
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CARPALS
CARPALS
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wrist bones
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METACARPALS=
METACARPALS=
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PALM BONE
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Phalanges (=plural: phalanx = singular)
Phalanges (=plural: phalanx = singular)
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PHALANGES = FINGER BONES
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Sternum
Sternum
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chest bone
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Ribs
Ribs
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The bones in the chest that protect the heart and lungs.
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pelvis
pelvis
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has PELVIC GIRDLE
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FEMUR
FEMUR
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upper THIGH leg bone
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Patella
Patella
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kneecap bone
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Tibia
Tibia
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shin bone (big bone)
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Fibula
Fibula
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calf bone - smaller leg bone
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Tarsals
Tarsals
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ankle bones
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Metatarsals
Metatarsals
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bones of the foot between ankle and toes
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Phalanges
Phalanges
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fingers, toes
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Veterbrae
Veterbrae
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spine
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During fracture healing, cartilage is deposited in granulation tissue to form which of the following?
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Cartilage is deposited in granulation tissue to form a SOFT CALLUS. CARTILAGE = SOFT CALLELUS
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Bones in the legs, arms, spine and pelvis grow at what rates?
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Bones in the legs, arms, spine and pelvis grow at DIFFERENT RATES!
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Which of the following is not considered a weight bearing activity?
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Swimming
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Trusses and arches, which help form an internal scaffolding network, are found in what kind of bone?
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Trusses and arches, which help form an internal scaffolding network are found in TRABECULAR BONE!
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At which of the following ages would calcium loss from bone be more than calcium deposits into bone, even when a high calcium diet is eaten?
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CALCIUM LOSS is HIGHEST at 50 YEARS OLD!
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A 50 year old woman is likely to be postmenopausal. Therefore, she is no longer secreting_______which protected her from bone loss.
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A 50 year old woman is likely to be postmenopausal. Therefore, she is no longer secreting estrogen which protected her from bone loss.
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Which mineral is most important throughout life to assist in maintaining strong bones?
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CALCIUM = MOST important for strong bones
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What mineral forms the majority of bone matrix?
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CALCIUM
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***What is the inorganic component of bone?
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hydroxyapatite - calicium phosphate salt
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****What are the 4 Main types of bones?
****What are the 4 Main types of bones?
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4 Main Types of Bones = FISL 1) FLAT BONES 2) IRREGULAR BONES 3) SHORT BONES 4) LONG BONES
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Can long bones be very small?
Can long bones be very small?
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YES, LONG BONES = bad name because can also be very small.
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In Long Bones, the Length of the Bone is _____than the width of the bone.
In Long Bones, the Length of the Bone is _____than the width of the bone.
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In Long Bones= the length of the bone is GREATER than the width of the bone!
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Long bones have what kind of shape?
Long bones have what kind of shape?
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Long Bones = THIN shape
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What type of Bones serve as Levers for Body Movements?
What type of Bones serve as Levers for Body Movements?
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Long Bones = Serve as Lever for Body movement like Femur.
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What type of Bone is the FEMUR?
What type of Bone is the FEMUR?
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Femur = LONG BONE = Leveer
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What type of bone does the length and width propotions greatly differ?
What type of bone does the length and width propotions greatly differ?
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LONG BONE = femur---very different length and width proportions!
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What type of bone are Length and Width Similar in Proportion?
What type of bone are Length and Width Similar in Proportion?
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SHORT BONE = like SCAPHOID in wrist - Length and Width Similar in proportion
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SCAPHOID is an example of what type of bone?
SCAPHOID is an example of what type of bone?
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SHORT BONE = SCAPHOID bone in wrist= SHORT BONE = length and width similar proportions
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What type of bone allows SMALL degrees of motion, usually in 2 degrees of freedom?
What type of bone allows SMALL degrees of motion, usually in 2 degrees of freedom?
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SHORT BONE = small degree of motion = usually 2 degrees of freedom in scaphoid wrist bone
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What type of bones develop by intramembrane ossification?
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FLAT BONES = develop by INTRAMEMBRANE OSSIFICATION!
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Sacrum
Sacrum
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bone formed from five vertebrae fused together near the base of the spinal column - EXAMPLE of an IRREGULAR BONE
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What type of ossfication produces most other bones like veterbrae, ribs, scapulae, pelvic bones, limb bones and some parts of the skull?
What type of ossfication produces most other bones like veterbrae, ribs, scapulae, pelvic bones, limb bones and some parts of the skull?
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ENDOCHONDRAL ossification: cartilege produces most other bones like veterbrae, ribs, scalpue, pelvic bones, limb bones and some parts of the skull!
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What is a method in which mesenchyme first transforms into a hyaline cartilage
What is a method in which mesenchyme first transforms into a hyaline cartilage "model" in the approximate shape of the bone to come?
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mesenchyme--> HYALINE CARTILAGE MODEL = ENDOCHONDRAL OSSIFICATION
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What type of ossification is cartilage is then broken down and replaced by osseous tissue?
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ENDOCHONDRAL OSSIFICATION: hylaine cartilege--->replaced by ossseous bone tissue!