exam 2 cell bio - Name: _ Date: _ 1. The enlarged...

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Version 1 Page 1 Name: __________________________ Date: _____________ 1. The enlarged ventricles seen in Alzheimer's Disease is a result of ___________ A) upregulation of CSF (Cerebrospinal Fluid) production. B) blockage of the Choroid plexus. C) shrinkage of the cortex. D) subdural hematomas pushing on the ventricles. 2. Which of the following mechanoreceptors have small receptive fields and are rapidly adapting? A) Meissner's corpuscles B) Pacinian corpuscles C) Merkel's discs D) Ruffini's endings 3. Which of the following describes the function of the rubrospinal tract, and where in the spinal cord can you find it? A) orientation of head and eyes ; white matter B) balance and posture ; grey matter C) gross hand movements ; white matter D) precise finger movements ; white matter 4. Spinal nerves ____________________________. A) bring sensory information to the spinal cord B) conduct action potentials from the spinal cord to muscles C) contain axons of alpha motor neurons D) A and B are both correct E) A, B and C are all correct 5. Cerebellum acts to reduce motor error. What is motor error in this context? A) The difference between movements performed slowly and fast, for example slowly throwing a baseball and throwing it at high speed. B) The absence of sensory information as a result of a spinal cord injury that only affects sensory axons, and not motor axons. C) Failure of muscle fibers to contract when motor neurons fire action potentials and release neurotransmitter. D) The difference between the motor command sent to the muscles by motor cortex and the sensory information received as a result of the movement.
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Version 1 Page 2 6. Which of the following explaains short-term memory loss in Alzheimer's Disease? A) Neuronal cell death in Basal Ganglia B) Neuronal cell death in hippocampus C) Neuronal cell death in Substantia Nigra D) Neuronal cell death in Striatum 7. An OFF bipolar cell _____________ in response to dark in the center of its receptive field and _____________ if light shines on the surrounding area (center is still dark). A) hyperpolarizes ; depolarizes B) hyperpolarizse ; hyperpolarizes even more C) depolarizes ; depolarizes even more D) depolarizes ; hyperpolarizes 8. The gate theory of pain involves an _________ synapse between ___________ and an inhibitory interneuron in the dorsal horn of the spinal cord. A) excitatory ; A-alpha/A-beta axons B) excitatory ; C-fibers C) inhibitory ; A-alpha/A-beta axons D) inhibitory ; C-fibers 9. What is the function of gamma motor neurons? A) Activate (contract) intrafusal muscle fibers B) Activate (contract) extrafusal muscle fibers C) activate the inhibitory interneuron associated with the Golgi tendon organ D) activate alpha motor neurons 10. When you eat room-temperature food containing hot (spicy) peppers your mouth feels
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This note was uploaded on 11/17/2011 for the course ANIMALSCIE 704 taught by Professor Sukedo during the Fall '11 term at Rutgers.

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exam 2 cell bio - Name: _ Date: _ 1. The enlarged...

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