KEY___Bio_416K_Exam_3_Spring_06

KEY___Bio_416K_Exam_3_Spring_06 - KEY- Bio416K Physiology...

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KEY- Bio416K Physiology and Anatomy Name _____________________ Lecture Exam 3 Spring ‘06 1. Information about sound must travel through each of these areas of the brain. Place them in the correct sequence. 1. thalamus 2. medulla 3. auditory cortex of cerebrum 4. midbrain a. 1 – 2 – 3 - 4 b. 2 – 1 – 4 - 3 c. 2 – 4 – 1 - 3 d. 3 – 2 – 1 - 4 e. 3 – 4 – 1 - 2 2. Oflactory nerve fibers (cranial nerve I) are found __________________________. a. in the olfactory cortex b. passing through the cribriform plate of the ethmoid bone c. in the olfactory tracts d. in the thalamus e. all of the above are correct 3. A low-pitched sound will: a. depolarize hair cells less than a high-pitched sound. b. depolarize different hair cells than a high-pitched sound . c. depolarize the same hair cells, but result in different CNS paths activated d. cause more frequent action potentials in hair cells than a high-pitched sound. e. move the cilia of hair cells in the opposite direction as a high-pitched sound. 4. When a photoreceptor is exposed to light… a. the all- trans retinal changes to 11- cis retinal. b. the G-protein transducin is inhibited. c. the amount of cGMP increases. d. the permeability of the membrane to sodium decreases. e. the cell depolarizes and releases neurotransmitter. 5. Which sequence of events occurs when a person with normal eyesight looks at a distant object? a. pupils constrict, suspensory ligaments relax, lenses become more convex (i.e., rounded) b. pupils dilate, suspensory ligaments become taut, lenses become less convex c. pupils dilate, suspensory ligaments become taut, lenses become more convex d. pupils constrict, suspensory ligaments relax, lenses become more convex e. none of the above is the correct sequence 1
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6. Each of the following visceral reflexes is coordinated by the medulla oblongata EXCEPT one. Identify the EXCEPTION . a. swallowing reflex b. vomiting reflex c. coughing reflex d. cardioinhibitory reflex e. pupillary reflex Questions 7 - 12. Compare the following pairs of items by placing the correct response (i.e., a, b or c) in the space designated. a. for greater than (>) b. for same as or equal (=) c. for less (<) than 7. cone cell cGMP levels in light C cone cell cGMP levels in the dark 8. density of cones in periphery of retina C density of cones in fovea 9. activation of proximal basilar membrane C activation of proximal basilar with low frequency sounds membrane with high frequency sounds 10. intracellular Ca 2+ release in response A intracellular Ca 2+ release in to bitter ligands response to sour ligands
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This note was uploaded on 04/07/2008 for the course BIO 416K taught by Professor Findell during the Spring '08 term at University of Texas at Austin.

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KEY___Bio_416K_Exam_3_Spring_06 - KEY- Bio416K Physiology...

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