During this period, a second action potential can only be initiated by a larger than normal stimulus
a) Latent period
b) Absolute refractory period
c) Relative refractory period
d) All of these choices
e) None of these choices
c
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Bone is ________ and contains mainly ________ nerves
A. avascular; sensory B. avascular; motor C. highly vascularized; sensory D. highly vascularized; motor
When flexing the elbow, the biceps brachii, brachioradialis, and brachialis are the three major agonists recruited to perform this movement because all cause flexion at the elbow. However, the biceps also cause supination, an undesired movement. Therefore another muscle acting as a ________, causing ________ must be recruited to prevent the undesired motion.
A. stabilizer, extension B. neutralizer, extension C. stabilizer, pronation D. neutralizer, pronation
The corpus luteum forms from the follicle after ovulation.
Answer the following statement true (T) or false (F)
All of the following may be associated with a "heart block" except:
A) section of the superior part of the thoracic sympathetic trunk. B) coronary artery disease. C) loss of synchrony between atrial and ventricular contractions. D) use of an artificial pacemaker. E) ventricular fibrillation.