1. Osteoarthritis is not -- a. associated with overactive osteocyte b. the most
ID: 64499 • Letter: 1
Question
1. Osteoarthritis is not --
a. associated with overactive osteocyte
b. the most common cause of arthritis in the US
c due to degeneration of cartilage
d involve joint inflammation
e. a progressive degenerative desease
2. ------- is an extracellular protein that function to give a tissue structure and strength.
a. collagen
b. elastin
c. reticulin
d. keratin
e. melanin
3. ------- is an extracellular protein that function to provide elasticity to a tissue.
a. collagen
b. elastin
c. reticulin
d. keratin
e. melanin
4. ------- is a cytoplasmic protein that provides structure and adds to strength of the cutaneous membrane.
a. collagen
b. elastin
c. reticulin
d. keratin
e. melanin
5. Osteoblasts ----------
a. are the most numerous type of the bone cell
b. are mature cells
c. convert into osteocytes when they are surrounded by matrix
d. are primarily located in the outer layer of the periosteum
e. are only located in the endosteum
6. Osteoclasts ---------------
a. function to break down bone matrix
b. function to biuld bone matrix
c. synthesize and secret collagen for the periosteum
d. are uninucleate cells that convert into osteoprogenitor cells to repair a fracture
e. synthesize and secrete hydroxyapatite
7. All of the following are true of skeletal muscle cells except ------
a. they are attached to one another by desmosomes
b. they are multinucleate
c. they may approach a half meter in length
d. they require stimulation by the central nervous system to contract
e. they are striated in appearance
8. ---------- originate from the connective tissue sheaths of muscle and function to connect muscle to bone.
a. tendons
b. endosteum
c. periosteum
d. ligaments
e. cartilage
9. Which hormone does not regulate blood levels of the calcium ion?
a. human growth hormone
b. parathyroid hormone
c. thyroxine
d. epinephrine
e. estrogen
10. All of the following except -------- are examples of connective tissue.
a. dermis
b. cartilage
c. adipose tissue
d. endothelium
e. blood
Explanation / Answer
1. Osteoarthritis is not associated with overactive osteocyte. (a)
2. Collagen is an extracellular protein that function to give a tissue structure and strength. (a)
3. Elastin is an extracellular protein that function to provide elasticity to a tissue. (b)
4. Keratin is a cytoplasmic protein that provides structure and adds to the strength of the cutaneous membrane. (c)
5. Osteoblasts are primarily located in the outer layer of the periosteum. (d)
6. Osteoclasts function to break down bone matrix (a).
7. All of the following are true of skeletal muscle cells except they are attached to one another by desmosomes. (a)
8. Tendons originate from the connective tissue sheaths of muscle and function to connect muscle to bone. (a)
9. Estrogen does not regulate blood levels of the calcium ion.
10. The Endothelium is not a connective tissue. (d)
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