This condition is characterized by a thicker-than-normal stratus corneum producing large silvery scales
A. eczema
B. psoriasis
C. vitiligo
D. decubitus ulcer
E. bullae
B
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A laboratory rat has an electrode implanted in its brain. By pressing a metal bar in its cage, the animal can activate the electrode. Which of the following is most likely to be true?
A. If the animal presses the bar repeatedly, then the electrode is probably in an area associated with appetitive motivation. B. If the animal presses the bar once, then never touches it again, then the electrode is probably in an area associated with aversive motivation. C. Such an experiment has no relevance to emotional states in humans or human behavior. D. Both if the animal presses the bar repeatedly, then the electrode is probably in an area associated with appetitive motivation and if the animal presses the bar once, then never touches it again, then the electrode is probably in an area associated with aversive motivation are correct. E. All of the choices are correct.
A fatty acid that contains two or more double covalent bonds is said to be
A) saturated. B) monounsaturated. C) polyunsaturated. D) hydrogenated. E) carboxylated.
Botulinum toxin exerts its lethal blow by blocking the release of what chemical compound?
a. calcium b. serotonin c. ACh d. potassium e. dopamine
Contraction of the chambers of the heart is ____________________.
hypertension diastole systole stroke volume heart rate