Incoming visual information is relayed to the appropriate cortical tissue by
a. the ganglion cells
b. the lateral geniculate nuclei
c. thalamus
d. both a and b
e. both b and c
E
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At an excitatory chemical synapse between two neurons,
A. there is increased permeability of the postsynaptic cell to both Na+ and K+. B. a small hyperpolarization of the postsynaptic membrane occurs when the synapse is activated. C. an action potential in the presynaptic neuron always causes an action potential in the postsynaptic neuron. D. excitation occurs because K+ enters the postsynaptic cell. E. action potentials spread through gap junctions between cells.
Where in the brain does your consciousness reside?
What will be an ideal response?
Parasympathetic preganglionic axons from the sacral region of the spinal cord course through ____ nerves that innervate the ____
A. splanchnic; urinary bladder and adrenal glands B. pelvic; lower colon and reproductive glands C. sacral; lower colon and urinary bladder D. lumbar; stomach and intestines E. coccygeal; anus and vagina
Displacement of a joint is called
A) bursitis. B) sprain. C) arthritis. D) dislocation.