Chapter 7

25 July 2022
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question
Which of the following is NOT part of the axial division of the skeletal system?
Which of the following is NOT part of the axial division of the skeletal system?
answer
pelvic girdle
question
Which suture separates the right and left parietal bones?
Which suture separates the right and left parietal bones?
answer
sagittal
question
During a particularly stressful point in her life, a student suddenly developed a disorder called temporomandibular joint syndrome (TMJ). As a result she frequently experiences pain and grinds her teeth during sleep. Which two bone markings are directly involved in this disorder?
answer
mandibular fossa and condylar process
question
Which two bones contribute to the zygomatic arch?
Which two bones contribute to the zygomatic arch?
answer
temporal and zygomatic
question
What organ is located in the hypophyseal fossa of the sphenoid bone?
What organ is located in the hypophyseal fossa of the sphenoid bone?
answer
pituitary gland
question
Which cranial bone spans the width of the cranial floor?
Which cranial bone spans the width of the cranial floor?
answer
sphenoid (The sphenoid bone is the large bat shaped bone that spans the floor of the skull.)
question
Which of the following bones do not contain a sinus? Frontal, nasal, sphenoid, or maxillary?
Which of the following bones do not contain a sinus? Frontal, nasal, sphenoid, or maxillary?
answer
Nasal. (The nasal bones are small tombstone shaped bones that form the bridge of the nose and don't contain sinuses.)
question
Which of the following bones is not a facial bone? Ethmoid, Zygomatic, Inferior nasal concha, or Maxillary
Which of the following bones is not a facial bone? Ethmoid, Zygomatic, Inferior nasal concha, or Maxillary
answer
Ethmoid (The ethmoid bone forms the area of the cranium between the nasal cavity and the orbits.)
question
Which of the following facial bones contain a sinus?Zygomatic, Inferior nasal concha, Maxillary, or Nasal
Which of the following facial bones contain a sinus?Zygomatic, Inferior nasal concha, Maxillary, or Nasal
answer
Maxillary (The maxillary bones contain the maxillary sinuses. They are the largest sinuses, located laterally to the nasal cavity in the region of the cheek.)
question
Which facial bones makeup the central portion of the bridge of the nose?
Which facial bones makeup the central portion of the bridge of the nose?
answer
Nasal (The 2 tombstone shaped nasal bones are found above the nasal cavity. They form a continuous bony bridge that connects the 2 sides of the face.)
question
What is the anatomical name for the facial bones known as
What is the anatomical name for the facial bones known as "cheekbones"? Lacrimal bones, Nasal bones, Zygomatic bones, or Maxillary bones
answer
Zygomatic. (The zygomatic bones are known as the cheekbones. Together, the zygomatic bone and the temporal bone form the zygomatic arch. This region is the bony foundation of the facial prominence known as the cheek.)
question
Which facial bones fuse to form the upper jaw?
Which facial bones fuse to form the upper jaw?
answer
Maxillary (The fused maxillary bones are known as the maxilla, and form the upper jaw and part of the palate)
question
Identify the small facial bones found in the medial wall of the orbit. (4)
Identify the small facial bones found in the medial wall of the orbit. (4)
answer
The lacrimal, sphenoid, ethmoid, and frontal bones make up the medial wall of the orbit.
question
The nasal septum occupies which anatomic plane?
The nasal septum occupies which anatomic plane?
answer
sagittal
question
Identify the part of the ethmoid bone that contributes to the nasal septum.
Identify the part of the ethmoid bone that contributes to the nasal septum.
answer
The perpendicular plate is a plate like process that projects inferiorly on midline, forming the superior portion of the nasal septum.
question
Which bone forms the inferior portion of the nasal septum?
Which bone forms the inferior portion of the nasal septum?
answer
Vomer (The vomer is a small facial bone that runs superiorly on midline to articulate with the perpendicular plate of the ethmoid, forming the inferior portion of the nasal septum.)
question
What part of the nasal cavity is formed by the nasal septum?
answer
medial wall (The nasal septum divides the nasal cavity in half on midline, thereby forming the medial wall of the nasal cavity on both the right and left sides.)
question
How many bones make up the nasal septum?
How many bones make up the nasal septum?
answer
2. composed of the perpendicular plate of the ethmoid and the vomer.
question
Identify the location of the occipital bone.
Identify the location of the occipital bone.
answer
Posterior surface and base of the cranium
question
Name the opening in the occipital bone through which the spinal cord passes.
Name the opening in the occipital bone through which the spinal cord passes.
answer
foramen magnum
question
Identify the area of the occipital bone that articulates with the vertebral column. can not be palpated from the surface of the head.
Identify the area of the occipital bone that articulates with the vertebral column. can not be palpated from the surface of the head.
answer
Occipital condyles (found on the inferior surface of the skull on either side of foramen magnum. They articulate with the first cervical vertebra, the atlas. This articulation allows us to flex and extend the skull in a nodding "yes" motion.)
question
Identify the large suture on the posterior surface of the skull at the border of the occipital bone.
Identify the large suture on the posterior surface of the skull at the border of the occipital bone.
answer
Lamboid
question
Identify the location of the sphenoid bone
Identify the location of the sphenoid bone
answer
floor of the skull
question
Identify the region of the sphenoid bone in contact with the pituitary gland.
Identify the region of the sphenoid bone in contact with the pituitary gland.
answer
sella turcica (a central depression that houses the pituitary gland)
question
Identify the region of the sphenoid bone that contains the optic canal.
Identify the region of the sphenoid bone that contains the optic canal.
answer
lesser wings (The optic canals are passageways found in the lesser wings. They serve as a passageway for the optic nerve running from the eyeball to the optic chiasma.)
question
Which of the following foramen convey a branch of the trigeminal nerve (CN V)?
Which of the following foramen convey a branch of the trigeminal nerve (CN V)?
answer
Foramen rotundum ( The foramen rotundum and the foramen ovale serve as passageways for branches of the trigeminal nerve.)
question
True or false, the sphenoid bone contains a sinus.
True or false, the sphenoid bone contains a sinus.
answer
True. The sphenoid bone contains the paired sphenoidal sinuses.
question
The nasal conchae __________.
The nasal conchae __________.
answer
assist in respiration and olfaction
question
Spinal nerves run to and from the spinal cord within what structure?
Spinal nerves run to and from the spinal cord within what structure?
answer
intervertebral foramina
question
What is the name of the first cervical vertebra?
What is the name of the first cervical vertebra?
answer
atlas (The atlas is essentially a ring of bone. Its structure is highly specialized to articulate with the skull.)
question
What is the name of the second cervical vertebra?
What is the name of the second cervical vertebra?
answer
axis ( C2 is known as the axis. It has a bony projection called the odontoid process that articulates with C1. C1 can pivot around C2, allowing us to rotate our head/shake head "no".)
question
Identify the articulation site that allows us to nod our head "yes".
answer
Occipital bone - atlas (The padlike occipital condyles found on both sides of foramen magnum sit on top of the plate like superior articular processes of the atlas, forming the atlanto-occipital joint. The articular surfaces permit nodding of the head in a "yes" motion (flexion and extension).)
question
Identify the articulation site that allows us to rotate our head, e.g. shaking the head "no".
answer
atlas - axis (The prominent projection known as dens on the axis forms a pivot joint with the atlas, allowing the atlas to rotate around the axis. The axis is a very sensible name for C2 since it serves as a central axis for rotation of the atlas.)
question
Identify the region of the skull that articulates with the atlas.
Identify the region of the skull that articulates with the atlas.
answer
Occipital condyles (found on both sides of foramen magnum sit on top of the atlas, forming the atlanto-occipital joint)
question
This facet on the transverse process of thoracic vertebrae provides an articulation site for a __________.
This facet on the transverse process of thoracic vertebrae provides an articulation site for a __________.
answer
rib
question
The vertebral column contains __________ cervical vertebrae.
The vertebral column contains __________ cervical vertebrae.
answer
seven
question
The major weight bearing part of a vertebra.
The major weight bearing part of a vertebra.
answer
Body (The disk shaped bodies of vertebrae are stable and stackable. Most weight is distributed in this region.)
question
The vertebral projection found in a median plane.
The vertebral projection found in a median plane.
answer
Spinous process (extends posteriorly in a median plane. It serves as a site of muscle and ligament attachment.)
question
Individual vertebrae articulate with each other forming the vertebral column. Identify the part of a vertebra that articulates immediately with the vertebra below it.
Individual vertebrae articulate with each other forming the vertebral column. Identify the part of a vertebra that articulates immediately with the vertebra below it.
answer
Inferior articular processes (contact the superior articular process of the vertebra below it, forming a moveable synovial joint.)
question
Which of the following structures would not be found within a vertebral foramen? Dura mater, Intervertebral discs, Spinal cord, or Spinal nerve roots
Which of the following structures would not be found within a vertebral foramen? Dura mater, Intervertebral discs, Spinal cord, or Spinal nerve roots
answer
Intervertebral discs (located in between the vertebral bodies. They form a symphysis with the bodies and act as a shock absorber.)
question
A lateral projection of a vertebra.
A lateral projection of a vertebra.
answer
Transverse process (project laterally from the junction of the lamina and pedicle.)
question
The ribs articulate with the __________.
The ribs articulate with the __________.
answer
transverse costal facets of the thoracic vertebrae
question
True ribs don't move during respiration, true or false.
answer
False
question
The pectoral girdle consists of which of the following bones?
The pectoral girdle consists of which of the following bones?
answer
clavicles and scapulae only
question
The clavicle articulates with the scapula __________.
The clavicle articulates with the scapula __________.
answer
distally at the acromion
question
Which landmark is found on the proximal end of the humerus?
Which landmark is found on the proximal end of the humerus?
answer
Greater tubercle (adjacent to the head of the humerus. It is the insertion site for some of the rotator cuff muscles)
question
Identify the depression found on the posterior surface of the humerus.
Identify the depression found on the posterior surface of the humerus.
answer
Olecranon fossa (the large depression at the distal end of the humerus. The olecranon fossa of the humerus together with the olecranon process of the ulna permit full extension of the forearm.)
question
Identify the region of the humerus that articulates with the ulna.
Identify the region of the humerus that articulates with the ulna.
answer
trochlea (The trochlear notch of the ulna swings around the trochlea of the humerus forming the hinge joint of the elbow.)
question
Which landmark is found on the distal end of the humerus?
Which landmark is found on the distal end of the humerus?
answer
Lateral epicondyle (on the lateral distal surface of the bone. It serves as a site of muscle attachment.)
question
What part of the humerus articulates with the scapula to form the shoulder joint?
What part of the humerus articulates with the scapula to form the shoulder joint?
answer
head (The head of the humerus articulates with the glenoid cavity of the scapulae to form the shoulder joint.)
question
Which region of the skeleton contains the humerus?
Which region of the skeleton contains the humerus?
answer
appendicular (The appendicular skeleton consists of all of the bones that make up the arm, hand, leg, and foot.)
question
Another name for the thumb is __________.
answer
pollex
question
How many carpal bones are in the wrist?
How many carpal bones are in the wrist?
answer
8.
question
Where is the radius located in reference to the ulna?
answer
lateral (The radius runs parallel to the ulna on the lateral surface of the forearm)
question
Identify the region of the radius that articulates with the ulna.
Identify the region of the radius that articulates with the ulna.
answer
Head
question
Which of the following regions of the radius help form the wrist joint?
Which of the following regions of the radius help form the wrist joint?
answer
Styloid process (of the radius is a pointed elongation of the epiphysis at the distal end of the bone. It articulates with the carpals at the wrist.)
question
Which digit is the radius closest to?
answer
1. The radius runs parallel to the ulna on the same side as the thumb (digit 1)
question
What type of joint is formed between the radius and ulna?
What type of joint is formed between the radius and ulna?
answer
Pivot. (The head of the radius pivots around the ulna at the radial notch, allowing supination and pronation of the forearm.)
question
Identify the types of movement enabled by the articulation between the radius and ulna at the elbow.
Identify the types of movement enabled by the articulation between the radius and ulna at the elbow.
answer
Supination and pronation
question
Where in the skeleton is the ulna located in reference to the humerus?
answer
Distal. (The ulna is a bone in the forearm which is distal to the humerus in the upper arm. The humerus makes up the upper arm.)
question
Identify the primary region of the ulna that forms the hinge joint with the humerus.
Identify the primary region of the ulna that forms the hinge joint with the humerus.
answer
Trochlear notch
question
Identify the true statement about the head of the ulna.: Helps form the pivot joint between the ulna and radius. Helps form the elbow joint. Found at the distal end of the bone. Found at the proximal end of the bone.
answer
Found at the distal end of the bone. (The head of a bone is typically found at the proximal end. The head of the ulna is at the distal end of the bone near the wrist.)
question
Identify the projection found on distal end of the ulna.
Identify the projection found on distal end of the ulna.
answer
Styloid process
question
Identify the region of the ulna that articulates with the humerus when the forearm is in full extension.
answer
Olecranon process (When the forearm is in full extension the olecranon process of the ulna fits snuggly into the olecranon fossa of the humerus.)
question
Which concave socket exists on the lateral surface of each hip bone and receives the head of the femur?
Which concave socket exists on the lateral surface of each hip bone and receives the head of the femur?
answer
acetabulum
question
The adult hip bone consists of _____ regions.
answer
3 (In childhood, the hip bone consists of 3 separate bones. The bones fuse together to become the adult hip bone.)
question
Which region of the hip bone articulates with the sacrum?
Which region of the hip bone articulates with the sacrum?
answer
Ilium (The ilium is the largest region of this bone. It articulates with the sacrum at the auricular surface.)
question
Which landmark of the hip bone can be felt on a hard chair?
Which landmark of the hip bone can be felt on a hard chair?
answer
Ischial tuberosity (The ischial tuberosity is the thickened inferior surface of the ischium. When we sit our weight is distributed to the chair through the ischial tuberosities.)
question
What regions of the hip bones articulate to form a symphysis?
What regions of the hip bones articulate to form a symphysis?
answer
Right and left pubic bodies
question
Which of the following is the largest region of the hip bone?
answer
Ilium
question
Identify the articulation site for the femur.
Identify the articulation site for the femur.
answer
Acetabulum ( the socket for the femur. It is formed by a fusion of all 3 regions that make up the hip bone.)
question
Identify the large hole found in pelvic bone.
Identify the large hole found in pelvic bone.
answer
Obturator foramen (the large circular hole in the hip bone. A few blood vessels and nerves pass through the part of the obturator foramen that isn't sealed off by a fibrous membrane.)
question
The ridge like superior edge of the ilium is known as the _____.
The ridge like superior edge of the ilium is known as the _____.
answer
Iliac crest (forms the large flaring superior border of the ilium that ends at the anterior superior iliac spine in the front of the hip bone and the posterior superior iliac spine in the back.)
question
What region of the vertebral column does the hip bone articulate with?
What region of the vertebral column does the hip bone articulate with?
answer
Sacral region
question
Which bone articulates in the acetabulum?
Which bone articulates in the acetabulum?
answer
femur
question
The palpable hip bone projections in the front of the body felt when you put your hands on your hips are:
The palpable hip bone projections in the front of the body felt when you put your hands on your hips are:
answer
anterior superior iliac spines
question
The projection at the inferior end of the greater sciatic notch is:_________
The projection at the inferior end of the greater sciatic notch is:_________
answer
the ischial spine.
question
The axial skeleton consists of ______,_______,and________
The axial skeleton consists of ______,_______,and________
answer
the skull, the vertebral column, and the rib cage.
question
trochanter
trochanter
answer
a landmark, part of the femur connecting to the hip bone
question
calcaneus
calcaneus
answer
the heel bone of the human foot. achilles tendon attaches to this
question
How many tarsal bones are there?
How many tarsal bones are there?
answer
Seven. Lateral cuneiform, intermediate cuneiform, medial cuneiform, cuboid, navicular, talus, calcaneus
question
The lateral bulge at the ankle is from the ___________.
The lateral bulge at the ankle is from the ___________.
answer
malleolus of the fibula
question
A pelvis was recovered at a crime scene. Which of the following answer choices would support the investigator's conclusion that the pelvis belonged to a female?
A pelvis was recovered at a crime scene. Which of the following answer choices would support the investigator's conclusion that the pelvis belonged to a female?
answer
an open, circular shaped pelvic inlet with an enlarged pelvic outlet