LS 7C Week 4.1 Clickr (Sensory Systems)

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You turn on a light so you can get a glass of water. At the moment the light turns ON, the Sodium (Na+) enters the cell. A. True B. False

B. False

You turn on a light so you can get a glass of water. BEFORE you turn on the light, the Effector Enzyme is activated. A. True B. False

B. False

Although the exact cause of Meniere's Disease remains a mystery, which of the following could most reasonably be caused by a build up of excessive endolymph fluid? A. Auditory canal becomes blocked B. Hair cell function is altered C. Stapes can no longer vibrate D. Tympanic membrane is ruptured

B. Hair cell function is altered

If a hair cell bends toward the kinocilium... A. It generates action potentials B. It releases neurotransmitters C. Both A and B D. Neither A nor B

B. It releases neurotransmitters

You turn on a light so you can get a glass of water. At the moment the light turns ON, the concentration of cGMP inside your rods and cones ________ A. Increases B. Decreases C. Does not change

B. Decreases

If a hair cell bends toward the kinocilium, K+ channels will open and the cell will _________. A. Depolarize B. Hyperpolarize C. Stay at the same membrane potential

A. Depolarize

Cutting the auditory nerve could treat the symptoms of: A. Tinnitus (Meniere's disease) only B. Auditory hallucinations (epilepsy) only C. Neither D. Both

A. Tinnitus (Meniere's disease) only

You wake up in the middle of the night. As you look around the dark room, your pupils ________ to let in ________ light. A. Constrict; more B. Constrict; less C. Dilate; more D. Dilate; less

C. Dilate; more

Meniere's Disease is linked to an excessive volume of endolymph fluid. Where in the ear is endolymph found? A. Outer ear B. Middle ear C. Inner ear D. B and C E. A, B, and C

C. Inner ear

Suppose the stereocilia of one hair cell become permanently bent. What will most likely happen as a consequence? A. A single pitch will be constantly perceived B. A single pitch will no longer be perceivable C. A or B depending on the hair cell's location D. A or B depending on the bending's direction

D. A or B depending on the bending's direction

During an auditory hallucination, sound is perceived without an auditory stimulus. Based on what you learned about the brain last week, stimulation in which lobe of the brain would be most likely to generate an auditory hallucination? A. Frontal lobe B. Occipital lobe C. Parietal lobe D. Temporal lobe

D. Temporal lobe


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