The compression (weight-bearing) strength of bone matrix is due to the presence of
A. hydroxyapatite crystals.
B. collagenase.
C. collagen fibers.
D. elastin fibers.
E. bone marrow.
A
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You have just eaten a meal high in complex carbohydrates. Which of the following enzymes will help to digest the meal?
A) gastrin B) amylase C) cholecystokinin D) trypsin
The structural classification of joints is based on ________
A) the amount of movement permitted at the joint B) the location of the joint in the axial skeleton C) the type of connective tissue between the articulating bones D) the shape of the articulating bones
All of the following occur during exercise except
A) vasodilation occurs to the active skeletal muscles. B) venous return increases. C) both cardiac output and stroke volume increase. D) blood flow to the brain stays relatively constant. E) blood flow to skin decreases.
Which of the following statements concerning the vagina is false?
A) It serves as a passageway for the elimination of menstrual fluids. B) It receives the penis during sexual intercourse. C) It holds sperm prior to their passage to the uterus. D) It forms the lower portion of the birth canal. E) It loses a portion of its lining during menses.