An action potential is ________
A) a repolarization of the cell membrane
B) a rapid depolarization and repolarization of the cell membrane that is propagated
C) a refractory period of the cell membrane
D) a depolarization of the cell membrane
Answer: B
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A) pineal gland B) thymus C) parathyroid glands D) adrenal cortex E) posterior pituitary
The time required for the ventricles to contract is represented by the ________ of the ECG.
A. P-Q segment B. P wave C. T wave D. QRS complex E. S-T segment
Which of the following structures separates the lower lip from the chin?
A. Vermilion zone B. Tubercle C. Labial commissure D. Labiomental groove E. Nasolabial sulcus
Define amino acid pool and explain how the pool is maintained even though we excrete amino acids daily
What will be an ideal response