Acetylcholine If the postsynaptic cell is an interneuron that uses GABA as a neurotransmitter, the excitation of the cell will result in an action potential in its synaptic targets. True or false? False What are second messengers? Choose the correct option. Molecules that activate additional enzymes in the cytosol Which of the following regulates vital bodily functions such as breathing? Choose the correct option. Brain stem Which of the following is a neurotransmitter used by postganglionic fibers of the sympathetic division of the autonomic nervous system? Choose the correct option. Keep the body cool and provide oxygen and nutrients to active skeletal muscles Which of the following channels in the active zones of the synaptic terminal open when the membrane depolarizes and causes the release of synaptic vesicles? Choose the correct option. voltage gated calcium channels
By what means does the hypothalamus control the posterior pituitary gland? Choose the correct option. Magnocellular neurosecretory cells Axons of the nervous system are described as afferent and efferent according to the direction in which they carry information. Which of the following represents an efferent projection? Choose the correct option. Motor output from the spinal cord Protein phosphorylation can change the conformation of a protein, thereby changing its activity. True or false? True The parasympathetic division of the ANS causes you to sweat profusely in reaction to embarrassment. True or false? false Opening of the chloride channel allows Cl– ions to cross the membrane, bringing the membrane potential toward the _____ Chlorde ___ equilibrium potential, ECl, about –65 mV. If the membrane potential was less negative than –65 mV when the transmitter was released, the activation of these channels would cause a _______ hyperpolarizing __ IPSP. Which chemical structure is present in all catecholaminergic neurons? Choose the correct option. Catechol The somatic motor system and the ANS constitute the total neural output of the CNS. True or false? True Where is CSF produced? Choose the correct option. Choroid plexus in the cerebral ventricles Which of the following statements explains why neurons that fire together wire together? Choose the correct option. A synapse formed by a presynaptic axon is strengthened when the presynaptic axon is active at the same time that the postsynaptic neuron is strongly activated by other inputs. What is the other name for dense-core vesicles? Choose the correct option. Secretory granules What is the effect of activating G-protein-coupled neurotransmitter receptors? Choose the correct option. Activate effector proteins such as ion channels or those that generate intracellular second messengers
Which of the following describes immunocytochemistry? Choose the correct option.
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- Spring '08