HW 5 A&P Chapter 7 Mastering Homework

4 September 2022
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question
How many lumbar vertebrae are in the vertebral column?
answer
5
question
Which of the following characteristics do not belong to the lumbar region? Blunt spinous process Large size overall Elongated spinous process Bulky centrum
answer
Elongated spinous process
question
Which region of the vertebral column is immediately superior to the lumbar region?
answer
Thoracic
question
Which region of the vertebral column is immediately inferior to the lumbar region?
answer
Sacral
question
The shape of the spinous process can be used to help determine if a vertebra is from the lumbar region.
answer
True
question
The lumbar vertebrae are roughly the same size as vertebrae from the rest of the vertebral column.
answer
False
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The lumbar vertebrae are found in the lower back.
answer
True
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The lumbar vertebrae are part of the appendicular skeleton.
answer
False
question
Bones are constantly undergoing resorption (breaking bone down) for various reasons. Which of the following cells accomplishes this process? osteoblast osteocyte osteoclast stem cell
answer
osteoclast
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What is the structural unit of compact bone?
answer
the osteon
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The structural unit of compact bone (osteon) resembles the growth rings of a tree trunk.
answer
True
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Which of the following refers to a bone disorder found most often in the aged and resulting in the bones becoming porous and light? osteoporosis osteomalacia rickets Paget's disease
answer
osteoporosis
question
Identify the major weight bearing part of a vertebra.
answer
Body
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Name the vertebral projection found in a median plane.
answer
Spinous process
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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
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Which of the following structures would not be found within a vertebral foramen? Intervertebral discs Spinal cord Dura mater Spinal nerve roots
answer
Intervertebral discs
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Identify a lateral projection of a vertebra.
answer
Transverse process
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The periosteum is secured to the underlying bone by ________.
answer
perforating (Sharpey's) fibers
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Which structure allows the diaphysis of the bone to increase in length until early childhood?
answer
epiphyseal plate
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What tissue forms the model for endochondrial ossification?
answer
cartilage
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Which vertebrae would you expect to have the largest body, relative to the other regions?
answer
lumbar
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What is the name of the first cervical vertebra?
answer
Atlas
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What is the name of the second cervical vertebra?
answer
Axis
question
Identify the articulation site that allows us to nod our head "yes".
answer
Occipital bone - atlas
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Identify the articulation site that allows us to rotate our head, e.g. shaking the head "no".
answer
Atlas - axis
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Identify the region of the skull that articulates with the atlas.
answer
Occipital condyles
question
Which of the following are correctly matched? compound fracture; the fractured bone ends penetrate the skin nondisplaced fracture; the fractured bone ends are misaligned incomplete fracture; the bone is broken through linear fracture; the break is perpendicular to the bone's long axis
answer
compound fracture; the fractured bone ends penetrate the skin
question
The correct order (from start to finish) of fracture repair is __________.
answer
hematoma formation, soft callus formation, bony callus formation, and bone remodeling
question
Which of the following hormones is currently thought to decrease plasma calcium levels in pregnant women and children? thyroid hormones parathyroid hormone (PTH) calcitriol calcitonin
answer
calcitonin
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PTH promotes the formation of which hormone?
answer
calcitriol
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Which of the following would NOT be a way that parathyroid hormone (PTH) could alter plasma calcium levels? (Which one of the following is FALSE?) increase reabsorption of calcium in the kidney increase osteoblasts on bone increase osteoclasts
answer
increase osteoblasts on bone
question
Which hormone works directly in the intestine to increase plasma calcium levels?
answer
calcitriol
question
The process of bones increasing in thickness is known as ________.
answer
appositional growth
question
Which region of the vertebral column is located superior to the thoracic region and which region is inferior to the thoracic region, respectively?
answer
Superiorly: cervical and inferiorly: lumbar
question
How many vertebrae comprise the thoracic region of the spine?
answer
12
question
Identify the articulation site for the head of a rib.
answer
Demi-facet
question
Which of the following thoracic vertebrae is the largest? T12 T1 T7 T5
answer
T12
question
Identify the articulation site for a tubercle of a rib.
answer
Transverse costal facet
question
How many lumbar vertebrae are there in a typical adult skeleton?
answer
5