The mamillary body is part of the:
a. thalamus
b. cerebellum
c. hypothalamus
d. midbrain
Answer: c. hypothalamus
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Contraction of the atria results from which wave of depolarization on the ECG tracing?
What will be an ideal response?
In the first step of the citric acid cycle, ________ acid combines with acetyl-CoA to produce citric acid.
A. lactic B. ketoglutaric C. pyruvic D. alpha ketoglutaric E. oxaloacetic
Which of the following statements about the action potential is false?
A) The rapid depolarization phase is caused by the entry of potassium ions. B) During the repolarization phase, sodium channels close and potassium channels open. C) During the depolarization phase, membrane potential becomes positive. D) In the hyperpolarization phase, membrane potential approaches the potassium equilibrium potential. E) The rapid depolarization phase is caused by the entry of sodium ions.
What is at the end of each axon?
A. Terminal arborization B. Axon hillock C. Myelin sheath D. Synaptic knob