Which one of the following bones does NOT contain paranasal sinuses?
A) frontal
B) sphenoid
C) mandible
D) ethmoid
E) maxilla
C
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Which of these spinal nerve counts is incorrect?
A. Thoracic nerves = 8 pairs B. Cervical nerves = 8 pairs C. Lumbar nerves = 5 pairs D. Sacral nerves = 5 pairs E. Coccygeal nerves = 1 pair
A person who drinks a lot of alcoholic beverages must urinate frequently. Why?
What will be an ideal response?
What is the purpose of the signal delay at the AV node during excitation of the heart?
A. Allows for greater excitation of the ventricles B. Spreads the action potential across a greater surface area C. Allow for total ventricular filling D. Increases the end-systolic volume
A patient with a connective tissue disease experiences increased pulmonary vascular resistance. Over a period of time, you would expect to observe
A) increased cardiac output from the right ventricle. B) increased cardiac output from the left ventricle. C) increased thickness of the right ventricular wall. D) distension of the pulmonary veins from the right lung. E) no appreciable changes in heart structure or function.