Exam 2 Version 1 Answer Key

Exam 2 Version 1 Answer Key - Fundamentals of Neurobiology,...

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Version 1 Fundamentals of Neurobiology, Exam 2, March 2008 Name: __________________________________________ 1. The photopigment in rods is called __________. It consists of a protein, ___________ , and a small molecule, _________ , that changes its conformation when it absorbs light. A) opsin ; transducin ; arrestin B) rhodopsin ; opsin ; retinal C) transducin ; rhodopsin ; retinal D) rhodopsin ; transducin ; retinal E) opsin ; rhodopsin ; phosphodiesterase 2. Hair cells depolarize in response to potassium _________ the hair cell. This results in _______ of ________ -gated calcium channels, and release of neurotransmitter. A) entering ; closing ; neurotransmitter B) exiting ; closing ; neurotransmitter C) exiting ; opening ; voltage D) exiting ; closing ; voltage E) entering ; opening ; voltage 3. Why does the fovea appear like a pit in the retina? A) Because of the presence of blood vessels that scatter light B) Because of the indentation formed when the optic nerve leaves the retina C) Because of an absence of photoreceptors D) Because of a high ratio of photoreceptors to ganglion cells E) Because of the lateral displacement of the cells layers above the photoreceptors 4. Which of the following is the function of direction-selective striate cortex neurons? A) Analysis of depth B) Analysis of color C) Analysis of shape D) Analysis of faces E) Analysis of motion 5. As a result of falling down a staircase the patient suffered a complete transection of the right optic tract. What is the consequence of this lesion? A) Vision lost in the left eye B) Peripheral vision lost in the left visual field C) Vision lost in the right eye D) Vision lost in the left visual fields of both eyes E) Vision lost in the right visual fields of both eyes
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Version 1 6. Most of the eyes refractive power is accomplished by what structure? A) Cornea B) Retina C) Fovea D) Iris E) Lens 7. Where are the first binocular neurons (neurons that receive input from both eyes) encountered in the visual system? A) The 'Where' pathway B) The 'What' pathway C) Primary visual cortex layer IV D) Primary visual cortex layer III E) Lateral geniculate nucleus (LGN) 8. Which process is used for localizing sounds in the range of 20 Hz -2000 Hz in the horizontal plane? A) Interaural time delay
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This homework help was uploaded on 04/03/2008 for the course CELL BIO & 245 taught by Professor Schjott during the Spring '08 term at Rutgers.

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Exam 2 Version 1 Answer Key - Fundamentals of Neurobiology,...

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