The process in which the frequency of nerve impulses in the first-order neuron decreases during prolonged stimulus is called
a) selectivity.
b) adaptation.
c) perception.
d) modality.
e) transduction.
b
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The juxtaglomerular apparatus regulates the filtration rate by ________.
A. renin-angiotensin II vasoconstricting both the afferent and efferent arterioles B. vasoconstriction of the peritubular capillaries C. increasing osmotic pressure in the glomerular capsule D. vasodilation of the peritubular capillaries
Progesterone levels are highest during the ________ phase
A. menstrual B. proliferative C. follicular D. luteal E. ovulation
Descending tracts of the central nervous system that conduct impulses down the spinal cord are concerned with ____ functions
a. sensory b. motor c. afferent d. interneuron
What structure serves as the common passage way for food and air?
A. Pharynx B. Larynx C. Trachea D. None of these are correct.