After cutting each of the individual tracts that enter the medulla and spinal cord, depriving the brain of almost all sensory input, an animal:
a. continues to have periods of wakefulness and sleep.
b. stops sleeping.
c. goes into a coma.
d. enters a prolonged state of sleep.
Answer: a. continues to have periods of wakefulness and sleep.
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The primary spinal curves
A) are also called compensation curves. B) accommodate the thoracic and abdominopelvic viscera. C) develop several months after birth. D) are the lumbar and cervical curves. E) help shift the weight to permit an upright posture.
Which condition occurs when the vertebrae fail to develop a complete neural arch and part of the spinal cord is exposed?
A. Anencephaly B. Microcephaly C. Multiple sclerosis D. Spina bifida E. Spinal meningitis
What veins are shown draining directly into the superior vena cava?
A) phrenic and hepatic veins B) right and left jugular veins C) right and left common iliac, renal, and adrenal veins D) right and left subclavian, and right and left jugular veins E) right and left brachiocephalic, mediastinal, and the azygos veins
The serous membrane on the surface of the lungs is the ____.
a) parietal pleura b) visceral pleura c) visceral peritoneum d) parietal periotneum