NK cells use ________ to lyse abnormal cells
A) pyrogen
B) perforin
C) interferon
D) complement
E) phagocytosis
B
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Which of the following would provide no benefit to a person suffering any one of the various types of anemia?
A) treatment with synthetic erythropoietin B) supplemental bilirubin injection C) supplemental oxygen delivered by mask D) blood transfusion
Which type of cell divides readily after a bone is damaged?
A) osteoblast B) osteoprogenitor cell C) red marrow cell D) osteocyte E) osteoclast
What term is used to describe a single, brief contraction and relaxation cycle in a muscle fiber?
A. Contraction phase B. Whole muscle contraction C. Power stroke D. Muscle twitch
Select the statements that describe lower motor neurons. (Check all that apply.)
A. Send signals to visceral smooth muscle B. Send signals to skeletal muscles C. Have axons extending into peripheral nerves