MHC class I molecules on a cell allow it to interact with
A. natural killer cells.
B. helper T-lymphocytes.
C. cytotoxic T-lymphocytes.
D. CD8+ B-lymphocytes.
Answer: C
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When the arrector pili muscles contract,
A. the hair on your arms and legs begins to curl. B. the sweat glands empty their contents onto the surface of the skin. C. no change is noted on the skin surface. D. the body is able to lose heat. E. "goose bumps" form on the skin.
If a thyroid tumor secreted an excessive amount of calcitonin, we would expect ___________.
A. an elevated level of osteoclast activity B. an elevated level of osteoblast activity C. a reduced rate of endochondral ossification D. a rise in blood calcium concentration E. increasingly brittle bones
A neuron in the CNS in incapable of repair/regrowth of its axon because of inhibitory effects from
The deltoid ligament, lateral ligament, and tibiofibular ligaments belong to the ________ joint.
A. knee B. fibulometatarsal C. talocrural D. humeroradial E. tarsometatarsal