The knuckle joints (between metacarpals and phalanges) are ________ joints.
A. condyloid
B. hinge
C. saddle
D. gliding
Answer: A
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T cells:
a. are important in long-term immunity because they form memory cells b. can release as many as 2000 antibodies a second c. can release poisons that can directly kill cells d. form plasma cells when activated
What is the incomplete layer of cells that covers all internal surfaces of the bone within the medullary cavity?
A. Trabecula B. Epiphysis C. Diaphysis D. Endosteum E. Periosteum
Why do pregnant women often have heartburn?
A) As the uterus enlarges it pushes upward on the stomach, causing gastric reflux. B) Elevated levels of estrogens cause morning sickness. C) The mother's body is purging itself of toxins to protect the fetus. D) There is reduced intestinal motility.
The middle and internal ear are located inside of the ________.
A. temporal bone B. superior and middle conchae C. dermis D. orbits