Which of the following is not a possible circulatory route from the heart?
A) Heart ? arteries ? arterial anastomosis ? capillary bed ? veins ? heart
B) Heart ? arteries ? capillary bed ? vein ? capillary bed ? arteries ? heart
C) Heart ? arteries ? capillary bed ? veins ? heart
D) Heart ? arteries ? arterial anastomosis ? capillary bed ? venous anastomosis ? veins ? heart
E) Heart ? arteries ? capillary bed ? vein ? capillary bed ? veins ? heart
B
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Lungs are to the respiratory system as the spleen is to the
A) lymphatic system.
B) urinary system.
C) digestive system.
D) cardiovascular system.
E) muscular system.
Sounds at 1000 cycles per second vibrate the basilar membrane closer to the oval window, while sounds at 2000 cycles per second vibrate the membrane closer to the helicotrema
Indicate whether the statement is true or false
The sympathetic nervous system
a. releases NE from most of its preganglionic neurons b. has some postganglionic fibers that release acetylcholine c. has preganglionic neurons that originate in the thoracic and lumbar regions of the spinal cord d. has characteristics a and b e. has characteristics b and c
The serous membrane on the outer surface of the heart is known as the ___.
a) parietal pleura b) visceral pleura c) parietal pericardium d) visceral pericardium