How many of the 12 pairs of cranial nerves connect to the brainstem?
A) 9
B) 10
C) 11
D) 12
Answer: A) 9
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What may happen if the ductus arteriosus fails to close shortly after birth?
A. Blood may flow from the right atrium to the left atrium. B. The walls of the heart may become thin and flaccid. C. Blood may flow from the aortic arch to the lungs. D. The coronary arteries may have abnormally increased blood flow. E. Valvular stenosis may interrupt blood flow.
The ________ are responsible for synthesizing most of a human body cell's ATP.
A. microfilaments B. ribosomes C. nucleoli D. lysosomes E. mitochondria
The taste sensation that is triggered by the amino acid glutamate is known as
-peppery. -umami. -salty. -sweet. -sour.
A disease involving a missing or inactive lysosomal enzyme in nerve cells is called
A. Golgi's disease. B. neuritis. C. Tay-Sachs disease. D. multiple sclerosis.