Nerve fibers from the olfactory bulb project directly to ________
A) the thalamus B) the olfactory cortex (uncus)
C) the hypothalamus D) the basal nuclei (basal ganglia)
Answer: B
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The larger the receptive field, the
A) larger the area of the somatosensory cortex in the brain that perceives the sensation. B) fewer primary sensory neurons are involved. C) more primary sensory neurons synapse on a secondary sensory neuron. D) stronger the stimulus intensity required to activate a sensory receptor.
When comparing saltatory conduction to contiguous conduction, saltatory conduction
a. is the only method that occurs along both dendrites and axons b. is the only method that utilizes a positive feedback cycle c. requires more Na+-K+ activity after repolarization is complete d. causes the loss of fewer K+ ions during repolarization e. occurs along unmyelinated axons
Identify the correct statement(s) about digestive enzymes made by the small intestine
a. They are secreted into the intestinal lumen, where they perform their function b. They act intracellularly within the brush border c. They complete the digestion of carbohydrates d. Both a and c e. Both b and c
Each of the following hormones is an amino acid derivative except
A) epinephrine. B) norepinephrine. C) thyroid hormone. D) thyroid-stimulating hormone. E) melatonin.