Neurons of the ventrolateral preoptic nucleus (VLPO) of the hypothalamus release ________ that promotes sleep.
A. Acetylcholine
B. Dopamine
C. Histamine
D. GABA
Answer: D
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The T-tubules and sarcoplasmic reticulum are unique to muscle fibers
Indicate whether this statement is true or false.
Describe the phases of a normal sleep cycle.
What will be an ideal response?
Immediately following a dialysis treatment, a middle-aged woman complains of generalized weakness and nausea. Her blood pressure is 80/50 mm Hg, pulse rate is 40 beats/min and weak, and respirations are 22 breaths/min and regular. She is receiving supplemental oxygen, and an IV line has been established in the extremity opposite the shunt. The ECG reveals sinus bradycardia in lead II. Your next action should be to:
A) obtain a 12-lead ECG tracing. B) administer 0.5 mg of atropine sulfate. C) administer a 20-mL/kg fluid bolus. D) administer calcium and bicarbonate.
What does the name flexor carpi radialis longus tell you about this muscle?
A) The name tells that this muscle is a long muscle that lies next to the radius and flexes the wrist. B) The name tells that this muscle is a long muscle that lies opposite the radius and flexes the fingers. C) The name tells that this muscle is a long muscle that lies near the tibia and flexes the ankle. D) The name tells that this muscle is a short muscle that lies near the radius and flexes the ankle. E) The name tells that this muscle is a long muscle that lies near the radius and flexes the elbow.