Anatomy Exam 2-Ch. 6

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Mastering A&P Questions


 
  
Created Oct 18, 2012
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  Side A   Side B
1
Which of following is a function of the skeletal system?
 
  blood cell production
calcium homeostasis
body support
protection...
2
When a fractured bone heals it leaves a thickened region known as a ____________.
 
fracture hematoma callus bone scab tuberosity
3
This cell (osteoclast) functions to _________.
 
  lay down matrix fibers build bone maintain...
4
Spongy bone is filled with ____________.
 
compact bone red marrow the osteons fatty...
5
A vertebra is an example of a(n) __________ bone.
 
  dense flat irregular short
6
In relationship to the diaphysis of a long bone, the osteons are
 
  diagonal. radial. anterior. proximal. parallel.
7
A drop in blood calcium levels stimulates the secretion of __________.
 
  parathyroid hormone growth hormone calcitonin thyroid...
8
A bone scan of an older patient revealed the beginnings of osteoporosis. Which of these interventions...
 
bed rest vitamin D supplements calcium...
9
Migration of osteoblasts into the ___________ creates the __________.
 
epiphysis, secondary ossification center diaphysis, secondary...
10
Where in the body does the production of precursors for the synthesis of calcitriol occur?
 
small intestine kidneys bone skin liver
11
Which of these forms by intramembranous bone formation?
 
  mandible carpal bones humerus long...
12
Which of these is a primary role of the skeletal system?
 
  leverage calcium homeostasis muscle...
13
Which of the following are  
tendons bones cartilage ligaments other...
14
Which of the following characteristics applies to the cells known as  
They are stem cells. They are mature bone cells. The...
15
Osteoblasts differentiate from __________.
 
  osteocytes
osteomedullary cells
osteoclasts
osteoprogenitor...
16
Bone is composed of ________ percent cells.
 
2 15 50 25 10
17
Through the action of osteoclasts,
 
osteoid is calcified. new bone is formed. an...
18
________ account(s) for almost two-thirds of the weight of bone.
 
Water Fluoride Calcium phosphate Calcium...
19
________ cells are located in the inner cellular layer of the periosteum.
 
Osteoprogenitor Osteoclast Chondroblast Osteocyte Osteoid
20
The most abundant cell type in bone is
 
osteoclasts. osteocytes. osteoprogenitor...
21
The type of bone that forms the diaphysis of a long bone is called __________ bone.
 
  trabecular compact cancellous spongy
22
The interconnecting tiny arches of bone tissue found in spongy bone are called
 
  trabeculae. interstitial lamellae. concentric...
23
Fat is stored within the
 
metaphysis. medullary cavity. spongy...
24
The trabeculae of spongy bone
 
are composed mostly of cartilage
.will collapse under stress.
are organized along...
25
Migration of blood vessels into the central region of the cartilage bone model, starting bone...
 
secondary ossification center periosteum primary...
26
The cell (osteoblasts) designated by the arrow _________.
 
differentiates into osteoblasts maintain bone...
27
During endochondral bone formation, the primary ossification center is located in the __________.
 
  distal epiphysis proximal epiphysis diaphysis metaphysis
28
Intramembranous ossification begins with differentiation of ________ cells.
 
osteoprogenitor osteocyte osteoblast osteoclast mesenchymal
29
When the epiphyseal plate is replaced by bone,
 
interstitial bone growth begins. appositional bone growth...
30
Accelerated closure of the epiphyseal plates could be caused by
 
too little thyroxine. elevated levels of estrogen. high...
31
When production of sex hormones increases at puberty, epiphyseal plates
 
  increase slowly. accelerate rapidly,...
32
In normal adult bones,
 
osteoclasts continue to be active long after osteoblast activity ceases. a...
33
Calcitriol is required for __________.
 
  collagen synthesis activating osteoclasts quieting...
34
A lack of exercise could
 
  result in porous and weak bones. cause...
35
Excessive growth hormone prior to puberty could result in
 
osteoporosis. giantism. osteopenia. dwarfism. rickets.
36
Which hormone increases blood calcium upon secretion?
 
parathyroid hormone (PTH) Angiotensin converting...
37
Bone plays a central role in the regulation of blood levels of
 
sulfate. iron. sodium. potassium. calcium.
38
Which of the following is formed immediately after a fracture?
 
hematoma external callus spongy...
39
What is normally found at a fracture hematoma?
 
blood clot bone fragments dead...
40
Why does osteoporosis affect more women than men?
 
  Men exercise more than women and therefore have less osteoporosis. Men...
41
Aging has what effect on the skeletal system?
 
  fusion of joints, especially syndesmoses loss...

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