How many "heads" does each myosin molecule have?
a. 5
b. 4
c. 3
d. 2
e. 1
d
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Which of the following is a function of astrocytes?
A. They circulate the cerebrospinal fluid. B. They produce cerebrospinal fluid. C. They phagocytize tissue debris. D. They help form the blood-brain barrier. E. They form myelin in the CNS.
Which of the following activities would fatigue your hand muscles the fastest?
A. Alternately squeezing a ball then relaxing B. Squeezing a ball as hard as you can without stopping C. Bouncing a ball on the floor as many times as you can D. Throwing a ball in the air and catching it as many times as you can
Anemia that results from an excessive rate of erythrocyte destruction is classified as what type of anemia?
A. Hypoplastic B. Hemolytic C. Malicious D. Hemorrhagic E. Pernicious
Which of the following structures helps to regulate body temperature?
A. Fenestrae B. Metarteriole C. Tunic D. Glomus