By Michael H. Ebert
Offers clinical scholars 500 questions, solutions, and motives to organize for the behavioral technology element of the USMLE Step 1. the recent variation contains many new questions within the two-step medical layout to simulate the USMLE Step 1.
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Additional info for Behavioral Sciences: PreTest Self-Assessment and Review
Most glands receive either direct neural control from the brain or indirect control from hormones secreted by the hypothalamus. Thus, thyroid secretion is subject to hypothalamic control, whereas insulin secretion depends in part on adrenergic influence from the autonomic nervous system. The parathyroids are notably free of brain control; in regulating calcium metabolism, they in turn are regulated by blood levels of calcium. 30. The answer is b. ) When the axon is cut, the axon and synaptic terminals are deprived of essential metabolic connections with the cell body.
Some bodily changes, such as increased levels of cortisol, can actually destroy immune tissue. Stress also can change physiologic systems and may result in increased drug use, smoking, and alcohol use, which can contribute to negative chronic effects on the immune system. There is some evidence that adaptation to stress can occur, but this doesn’t appear to happen in more severe cases such as the caretakers of patients with Alzheimer’s disease. 3. The answer is c. ) In studying peripheral blood lymphocytes (PBLs) from patients with a major depression, it was found that they had poorer DNA repair (PBLs exposed to radiation damage) than lymphocytes obtained from nondepressed or low-distressed persons.
Different physiologic and/or behavioral mechanisms may be implicated at different stages of hypertension. For example, elevated output of blood from the heart with little increased resistance to flow in the body’s vasculature exists with borderline hypertension and results from increased activation of the sympathetic nervous system. qxd 11/13/01 3:17 PM Page 39 Biologic Correlates of Behavior Answers 39 This, along with increased levels of blood and tissue catecholamines, is the body’s response to psychological and environmental stress.