The term lordosis refers to
A. the anterior convexity in the lumbar region that a child develops when he or she walks upright
B. an exaggeration of the secondary curvature that develops in the lumbar region
C. a and b
D. Neither a nor b
Answer: C
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During the process of __________, the sperm is modified so that it can fertilize an egg.
Fill in the blank(s) with the appropriate word(s).
The type of connective tissue shown in the figure is the least specialized in adults. What is its primary function?
A) It cushions organs and provides support but permits independent movement. B) It provides a storage of energy resources. C) It provides firm attachment of muscles to bone, and conducts the pull of muscles. D) It provides insulation. E) It provides strength to resist forces applied from many directions.
Muscles that flex the elbow are innervated by (the)
A) axillary nerve. B) ulnar nerve. C) radial nerve. D) musculocutaneous nerve. E) both the radial and musculocutaneous nerves.
During the secretory phase, the corpus luteum secretes ____ levels of estrogen and ____ levels of progesterone
a. high, high b. high, low c. low, high d. low, low