The vestibule and the ____ function in the maintenance of balance (equilibrium)
a. semicircular canals
b. cochlea
c. ossicles
d. stapes
a
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Autonomic motor neurons regulate visceral activities by
1. increasing activities in effector tissue. 2. decreasing activities in effector tissue. 3. changing the direction of impulse conduction across synapses. a) 1 only b) 2 only c) 3 only d) Both 1 and 2 e) None of these choices
A substance does not move down a concentration gradient through
a. a symporter b. an antiporter c. a primary active transporter d. a secondary active transporter e. facilitated diffusion carrier
Which of the following is CORRECTLY matched?
linear fracture: the break is perpendicular to the bone's long axis incomplete fracture: the bone is broken through compound fracture: the fractured bone ends penetrate the skin nondisplaced fracture: the fractured bone ends are misaligned
Determine the correct order of events that occur when light strikes photoreceptor cells
1. The bipolar cell depolarizes. 2. Action potentials are sent to the brain via the optic nerve (CN II). 3. Light hyperpolarizes the photoreceptor. 4. Retinal ganglion cell produces action potentials. A) 1, 4, 2, 3 B) 3, 4, 1, 2 C) 3, 2, 4, 1 D) 3, 1, 4, 2