A physiology instructor asks the class, "What role do osteoblasts play in the physiology of bone tissue?" The student with the best answer would be:
A) Differentiation into mature bone cells
B) Synthesis and secretion of the bone matrix
C) Maintenance of calcium balance
D) Resorption of the bone matrix
Ans: B
Feedback:
Osteoblasts are bone-building cells that synthesize and secrete the bone matrix. Osteogenic cells differentiate into mature bone cells, whereas osteocytes and osteoclasts maintain calcium balance. The bone matrix is reabsorbed by osteoclasts.
You might also like to view...
List and describe the four word parts used to build medical terms
What will be an ideal response?
The term canthus refers to the
A. inner lining of the eyelids. B. bony socket that holds the eyeball. C. pupil of the eye. D. corner of the eye where the lids meet. E. tear duct.
The force velocity curve describes the relationship between speed of muscle shortening (i.e., velocity of movement) and muscle force production. Which of the following statements are true about the influence of muscle fiber type on the force velocity curve?
A. At any given velocity of movement, the peak power generated is lower in a muscle that contains a high percentage of fast fibers (i.e., type IIx) compared with a muscle that contains a high percentage of slow fibers (i.e., type I). B. At low movement speeds, the peak power generated is greater in a muscle that contains a high percentage of slow fibers (i.e., type I) compared with a muscle that contains a high percentage of fast fibers (i.e., type IIx). C. At any given velocity of movement, the peak power generated is greater in a muscle that contains a high percentage of fast fibers (i.e., type IIx) compared with a muscle that contains a high percentage of slow fibers (i.e., type I). D. None of these answers is correct.
One way to prevent shin splints is to strengthen the __________ muscles.
A. anterior tibialis B. quadriceps C. hamstring D. calf E. abductor