Vertigo occurs due to activation of the ________.
A. utricle
B. cochlea
C. saccule
D. semicircular canals
Answer: D
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In the cross-bridge cycle, the power stroke of myosin is immediately preceded by which of the following events?
A) The hydrolysis of ATP B) Binding the actin C) Releasing Pi D) Binding new ATP
Which of the following leads to inflammation, enhancement of phagocytosis and lysis of microbes?
a) Classical complement system b) Alternative complement system c) Apoptosis d) Classical and Alternative complement systems e) Hapten activation
Voluntary motor impulses leave the spinal cord via the _________ of gray matter.
A. anterior horn B. posterior horn C. anterior column D. posterior column E. lateral horn
A functional syncytium of cardiac muscles cells means that they
a. are striated b. exhibit muscle tone c. have a short refractory period d. lack the stimulation of a pacemaker e. work as a unit mechanically and electrically