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A&p ch 11

front 1 3) Ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid are called ________. A) ependymal cells B) Schwann cells C) oligodendrocytes D) astrocytes A	back 1 no data
front 2 The sheath of Schwann is also called the ________. A) myelin sheath B) axolemma C) neurilemma D) white matter C	back 2 no data
front 3 An excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle is ________. A) cholinesterase B) norepinephrine C) acetylcholine D) gamma aminobutyric acid C	back 3 no data
front 4 The period after an initial stimulus when a neuron is not sensitive to another stimulus is the ________. A) resting period B) repolarization C) depolarization D) absolute refractory period D	back 4 no data

front 5 10 Which of the following is not a structural feature of a neuron? A) synaptic cleft B) Nissl bodies C) dendrites D) axon A	back 5 no data
front 6 The part of a neuron that conducts impulses away from its cell body is called a(n) ________. A) axon B) dendrite C) neurolemma D) Schwann cell A	back 6 no data
front 7 The point at which an impulse from one nerve cell is communicated to another nerve cell is the ________. A) cell body B) synapse C) receptor D) effector B	back 7 no data
front 8 The role of acetylcholinesterase is to ________. A) act as a transmitting agent B) amplify or enhance the effect of ACh C) destroy ACh a brief period after its release by the axonal endings D) stimulate the production of serotonin C	back 8 no data

front 9 Which of the following is not a function of the autonomic nervous system? A) innervation of smooth muscle of the digestive tract B) innervation of cardiac muscle C) innervation of glands D) innervation of skeletal muscle D	back 9 no data
front 10 Collections of nerve cell bodies outside the central nervous system are called ________. A) nuclei B) nerves C) ganglia D) tracts C	back 10 no data
front 11 The term central nervous system refers to the ________. A) autonomic nervous system B) brain, spinal cord, and peripheral nerves C) brain and spinal cord D) spinal cord and spinal nerves C	back 11 no data
front 12 The substance released at axon terminals to propagate a nervous impulse is called a(n) ________. A) ion B) cholinesterase C) neurotransmitter D) biogenic amine C	back 12 no data

front 13 A neuron that has as its primary function the job of connecting other neurons is called a(n) ________. A) efferent neuron B) afferent neuron C) association neuron D) glial cell C	back 13 no data
front 14 Saltatory conduction is made possible by ________. A) the myelin sheath B) large nerve fibers C) diphasic impulses D) erratic transmission of nerve impulses A	back 14 no data
front 15 The part of the neuron that normally receives stimuli is called ________. A) an axon B) a dendrite C) a neurolemma D) a Schwann cell B	back 15 no data
front 16 The sympathetic and parasympathetic are subdivisions of the ________. A) central nervous system B) voluntary nervous system C) autonomic nervous system D) somatic nervous system C	back 16 no data

front 17 Ependymal cells ________. A) are a type of neuron B) are a type of macrophage C) are the most numerous of the neuroglia D) help to circulate the cerebrospinal fluid D	back 17 no data
front 18 Neuroglia that control the chemical environment around neurons by buffering potassium and recapturing neurotransmitters are ________. A) astrocytes B) oligodendrocytes C) microglia D) Schwann cells A	back 18 no data
front 19 Schwann cells are functionally similar to ________. A) ependymal cells B) microglia C) oligodendrocytes D) astrocytes C	back 19 no data
front 20 Immediately after an action potential has peaked, which cellular gates open? A) sodium B) chloride C) calcium D) potassium D	back 20 no data

front 21 An inhibitory postsynaptic potential (IPSP) is associated with ________. A) a change in sodium ion permeability B) hyperpolarization C) opening of voltage-regulated channels D) lowering the threshold for an action potential to occur B	back 21 no data
front 22 Which of the following will occur when an excitatory postsynaptic potential (EPSP) is being generated on the dendritic membrane? A) Specific sodium gates will open. B) Specific potassium gates will open. C) Sodium gates will open first, then close as potassium gates open. D) A single type of channel will open, permitting simultaneous flow of sodium and potassium. D	back 22 no data
front 23 When a sensory neuron is excited by some form of energy, the resulting graded potential is called a(n) ________. A) postsynaptic potential B) excitatory potential C) action potential D) generator potential D	back 23 no data
front 24 ________ is an indolamine. A) Dopamine B) Epinephrine C) Serotonin D) Tyrosine C	back 24 no data