In an ECG, what does the T wave represent?
A. Depolarization of the atria
B. Depolarization of the right ventricle
C. Repolarization of the ventricles
D. Closure of the AV valves
E. Depolarization of the left ventricle
C
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If the pathway shown in the diagram is a sympathetic division pathway, which neurotransmitter acts at the effector?
a) Norepinephrine b) Acetylcholine c) Epinephrine d) Dopamine e) Serotonin
Air flows out of the body during expiration because
A. intrapulmonary pressure is greater than atmospheric pressure. B. intrapleural pressure is greater than intrapulmonary pressure. C. atmospheric pressure is greater than intrapulmonary pressure. D. intrapleural pressure is greater than atmospheric pressure.
Colonic secretion contains no digestive enzymes
Indicate whether the statement is true or false
Damage to which tunic of the GI tract would directly affect Auerbach's plexus?
A. Muscularis B. Mucosa C. Serosa D. Submucosa