10. _____ is an extracellular protein that functions to provide elasticity to a
ID: 60438 • Letter: 1
Question
10. _____ is an extracellular protein that functions to provide elasticity to a tissue.
a. collagen
b. elastin
c. reticulin
d. keratin
e. melanin
11. ______ is a cytoplasmic protein that provides structure and adds to strength to the cutaneous membrane.
a. collagen
b. elastin
c. reticulin
d. Keratin
e. melanin
12. 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.
13. Osteoclasts _____.
a. function to break down bone matrix
b. function to build bone matrix
c. synthesize and secrete collagen for the periosteum
d. are uninucleate cells that convert into osteoprogenitor cells to repair a fracture
e. synthesize and secrete hydroxyapatite
14. Which of the following statements is not true of osteoprogenitor cells?
a. Osteoprogenitor cells are stem cells.
b. Osteoprogentior cells are located in the inner layer of the periosteum.
c. Osteoprogenitor cells are located in the endosteum.
d. Osteoprogenitor cells can divide to produce more osteoprogenitor cells as well as oseoblasts.
e. Osteoprogenitor cells secrete enzymes that digest bone matrix to repair a bone fracture.
15. ________are the most numerous type of bone cell and function to maintain bone matrix.
a. Osteocytes
b. osteoblasts
c. osteoprogenitor cells
d. osteoclasts
e. chondrocytes
16. All of the following are true of hypodermis except _______.
a. The hypodermis is primarily connective tissue.
b. The hypodermis contains a large amount of adipocytes.
c. The hypodermis is inferior to the dermis, but superior to the epidermis.
d. The hypodermis is highly vascular.
e. The hypodermis functions to hold the integument in place relative to other body structures.
17. _____ is the formation of bone from hyaline cartilage.
a. Endochondral ossification
b. Osteon ossification
c. Intramembranous ossification
d. Intraosseous formation
e. Osteoprogenitor ossification
18. _____ functions to contract and move things.
a. connective tissue
b. epithelial tissue
c. muscle tissue
d. nervous tissue
19. Which statement about the epidermis is not correct?
a. The primary structural and functional cell type of the integument is the keratinocyte.
b. Melanocytes produce the brown pigment melanin and are concentrated in the stratum
basale.
c. The stratum granulosum contains about 3 – 5 layers of melanocytes that still retain the ability
to divide.
d. Keratinocytes in stratum basale have stem cell properties.
e. Stratum spinosum contains a population of immune cells called Langerhan’s cells.
Explanation / Answer
10. Elastin
11. Keratin
12. Osteoblasts
13. Osteoclasts
14. Osteoprogenitor cells are located in the endosteum
15. Osteoblasts
16. The hypodermis is inferior to dermis but superior to the epidermis
17. Endochondral ossification
18. Muscle tissue
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