The vestibulocochlear nerve passes through which of the following openings?
A. External acoustic meatus
B. Internal acoustic meatus
C. Foramen ovale
D. Foramen rotundum
E. Carotid canal
B. Internal acoustic meatus
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Capillaries that surround the proximal convoluted tubules are
A) proximal capillaries. B) corticoradiate capillaries. C) vasa recta capillaries. D) efferent arterioles. E) peritubular capillaries.
Stimulus intensity, or strength, is encoded in
a. the amplitude (height) of the action potential with stronger stimuli eliciting taller action potentials. b. duration of a single action potential with stronger stimuli eliciting overshoots with more area under the curve. c. frequency of action potentials with stronger stimuli eliciting higher frequencies. d. faster conduction velocities with stronger stimuli resulting in more rapid depolarization of contiguous segments of the axonal membrane. e. all of these.
The hormone-induced increases in water permeability of the distal tubule and collecting ducts is mediated by a(n) ________.
A) increase in aquaporin-2 activity B) increase in aquaporin-3 activity C) increase in paracellular permeability D) decrease in "tightness" of tight junctions E) decrease in paracellular permeability
Prolonged deep inspirations can result from stimulating the ________ center
A) apneustic B) pneumotaxic C) expiratory D) baroreceptor E) chemoreceptor