The sympathetic nervous system
a. is always excitatory.
b. innervates only tissues concerned with protecting the body against challenges from the outside environment.
c. dominates in fight-or-fight situations.
d. is part of the somatic nervous system.
e. is part of the afferent division of the peripheral nervous system.
C
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A diagnosis of thyroid cancer may be treated with removal of the thyroid gland. Which hormone or hormones may now be deficient? Considering each hormone individually, which ones should be restored and why? Explain any age-related considerations. Which nonthyroid hormone may be affected by careless thyroidectomy? Explain your answer, indicating whether or not it is critical to maintain this
hormone. What will be an ideal response?
Which of the following is false regarding sleep?
A. The longest bouts of REM sleep occur early in the night, with shorter REM periods toward the morning. B. During REM sleep, the brain uses as much oxygen as when the individual is awake. C. Different stages of non-REM sleep are characterized by different brain waves. D. REM sleep is important for memory processing and consolidation.
Which of the following events would occur when the environmental temperature is considerably lower than body temperature?
A. Vasodilation of the blood vessels of the skin B. Sweating C. Increased heat loss through the skin D. Decreased muscular activity to maintain heat E. Vasoconstriction of the blood vessels of the skin
After a mastectomy of her left breast, a woman experiences edema in her left arm. What is the probable cause?
A. The blood that would have circulated through her left breast is now trapped in her left arm. B. In addition to having cancer in her left breast, she likely has cancer in her left arm as well. C. The surgeon likely removed her left axillary lymph nodes as well. D. She was likely lying on her left side during surgery, causing inflammation in her left arm.