Provide a plausible explanation for the increased incidence of cancer in the elderly
What will be an ideal response?
The increased incidence of cancer in elderly people may result from a decline in immune surveillance, which results in reduced elimination of tumor cells as they arise.
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Cardiac output can be increased by all of the following except
A) decreasing ejection fraction. B) decreasing end systolic volume. C) increasing stroke volume. D) increasing ejection fraction. E) increasing heart rate.
Which nervous system makes up part of the autonomic nervous system?
a. parasympathetic nervous system b. sympathetic nervous system c. both the parasympathetic and sympathetic nervous systems
All of the following are true of the nervous system, except that it doesn't
A) respond rapidly to stimuli. B) respond specifically to stimuli. C) communicate by the release of neurotransmitters. D) respond with motor output. E) function independently of the endocrine system.
Drugs that are monoamine oxidase (MAO) inhibitors would most likely ________
A) decrease the amount of NE destroyed and may be used as an antidepressant B) block ACh receptors on skeletal muscle and cause flaccid paralysis C) activate the parasympathetic division and allow for normal digestive system activities D) inhibit uptake of dopamine and cause depression E) stimulate ?-2 receptors and cause an increase in heart rate and dilation of bronchioles