surface on a neuron that discharges the contents of vynaptix vesicles is tha A)
ID: 47284 • Letter: S
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surface on a neuron that discharges the contents of vynaptix vesicles is tha A) axon hillock B) node of Ranvier C) dendrite D) postsynaptic membrane E) presynaptic membrane. 67)The surface on a 68) Neurotransmitters are released from axon terminals via A) exocy B) active transport C) osmosis D) transcytosis. E) diffusion 69) The release of acetylcholine from the terminal of a motor neuron is most directly linked to the A) entry of calcium into the axon terminal B) exit of potassium from the axon terminal. O) entry of potassium into the axon terminal D) entry of sodium into the axon terminal. E) exit of sodium from the axon terminal 70) An inhibitory postsynaptic potential (iPSP) occurs in a membrane made more permeable to A) ATP B) sodium ions. C) potassium ions. D) calcium ions. E) all neurotransmitter molecules 71) 71) Functionally, which cellular location is the neuron's "decision-making site" as to whether or not an action potential will be initiatedi? A) mitochondrial membranes B) axon hillocks C) axonal membranes D) presynaptic membranes E) dendritic membranes 72) 72) Most of the synapses in vertebrates conduct information in only one direction A) as a result of the nodes of Ranvier. B) as a result of voltage-gated sodium channels found only in the vertebrate system C) because only the postsynaptic cells can bind and respond to neurotransmitters. D) because the sodium-potassium pump moves ions in one direction. E) because vertebrate nerve cells have dendrites. A) the white matter in the brain and the white matter in the spinal cord. B) the white matter of the brain and the gray matter of the spinal cord. C) the gray matter of the brain and the white matter of the spinal cord. D) the gray matter of the brain and the gray matter of the spinal cord. E) all areas of the brain and spinal cord. 73) Myelinated neurons are especially abundant inExplanation / Answer
67). E. Presynaptic membrane.
68). A. Exocytosis.
69). A.entry of calcium into the axon terminal
70). D. potassium ions.
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