UT Knoxville BCMB 230 - BCMB230ex2s14 (4 pages)

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BCMB230ex2s14



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BCMB230ex2s14

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4
School:
University of Tennessee
Course:
Bcmb 230 - Human Physiology
Human Physiology Documents

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Human Physiology Exam 2 Spring 2014 1 Neuroglial cells that regulate neurotransmitter metabolism and capillary permeability are a neurolemmacytes b astrocytes c oligodendrocytes d neurons 2 The portion of the nervous system concerned with afferent input from skeletal muscle is a visceral sensory b somatic motor c somatosensory d propriosensory 3 Light adaptation of the eye occurs due to a a decrease in the active photo pigment c a shift to using rod cells b an increase in active photopigment d a shift to using cone cells e both b and c 4 A Na K ATPase on a neuron membrane acts to a create ion gradients necessary for creating a membrane potential b creates most of the charge difference across the membrane c moves 3 K out of the cell for every 2 Na into the cell d all of the above 5 An inhibitory graded potential could be produced by opening which channel a Na b Cl c K d either b or c 6 Opening Ca channels during a resting potential would results in a a depolarization b a hyperpolarization c repolarization d both a and c 7 Which is true of a graded potential a can be a depolarization b can be a hyperpolarization c size dependent on stimulus size d decremental propagation e all of the above 8 Which is true of an action potential a it is a depolarization b it opens voltage gated channels along an axon c it is may be inhibitory d typically initiated by a graded potential e a b and d 9 Increased stimulus size can result in a decreased size of graded potential c increased frequency of action potentials b opening more Na channels d all of the above 10 Which of the following is a type of graded potential a IPSP b threshold potential c receptor potential d all of the above 11 Myelination in the central nervous system a is a continuous layer c is broken by nodes of exposed plasma membrane b is a single layer d conducts the membrane potential 12 Which of the following are neuropeptides a endogenous opiates b substance P c serotonin d both a and b 13 In smooth muscle a stretch



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