In response to binding a neurotransmitter, a postsynaptic cell can
A) open chemically gated ion channels, causing graded potentials known as fast synaptic potentials, close ion channels via G proteins and second messenger systems, producing slow responses, and regulate protein synthesis and affect the metabolic activities of the postsynaptic cell.
B) only regulate protein synthesis and affect the metabolic activities of the postsynaptic cell.
C) open chemically gated ion channels, causing graded potentials known as fast synaptic potentials and regulate protein synthesis and affect the metabolic activities of the postsynaptic cell.
D) only open chemically gated ion channels, causing graded potentials known as fast synaptic potentials.
E) only close
A) open chemically gated ion channels, causing graded potentials known as fast synaptic potentials, close ion channels via G proteins and second messenger systems, producing slow responses, and regulate protein synthesis and affect the metabolic activities of the postsynaptic cell.
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The types of neurons that carry impulses away from the brain and spinal cord are called:
a. motor neurons b. sensory neurons c. efferent neurons d. both A and C above
The vertical osmotic gradient in the kidney
a. is established and maintained by the countercurrent system. b. makes it possible to put out urine of variable concentration depending on the needs of the body by varying the degree of water permeability of the distal portions of the nephron. c. is found in the renal cortex. d. both (a) and (b) above. e. all of these answers.
What is the common insertion of all 4 heads of the triceps brachii muscle?
What will be an ideal response?
An obstruction in the glomerulus would affect the flow of blood into the
A. efferent arteriole. B. distal convoluted tubule. C. proximal convoluted tubule. D. renal artery. E. afferent arteriole.