The vessel that receives blood from the head, neck, chest, shoulders, and arms is the
A) internal jugular vein.
B) external jugular vein.
C) superior vena cava.
D) inferior vena cava.
E) coronary sinus.
Answer: C
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How long is the average trachea?
A. 12?14 mm B. 12?14 inches C. 12?14 cm
Answer the following statements true (T) or false (F)
1. Each resting neuron has a slight positive charge on the outside. 2. In the resting neuron, there is an excess of sodium ions on the interior of the cell. 3. When a resting neuron is stimulated, sodium ions rush into the cell, causing the interior to become negatively charged. 4. Saltatory conduction occurs when a nerve impulse jumps over the myelin sheath of an axon. 5. Saltatory conduction tends to be slower then nonsaltatory nerve conduction.
A patient, whose foot has become numb from lack of circulation, may not have a _____ pulse.
What will be an ideal response?
A glomerulus is:
A) a hairpin loop segment of the renal tubule. B) a set of capillaries within the renal corpuscle. C) attached to the collecting duct. D) the source of erythropoietin.