Question

You are lying on a sand dune looking over the water, listening to the waves, and enjoying the feel of the sun and wind on your skin. You sit up quickly and feel momentarily dizzy.If you lose your sensitivity to the sound of the waves but still notice a seagull flying above you, what is happening?

A. general sensory diminution involving mechanoreceptors and thermoreceptors

B. sensory adaptation in sight and hearing involving mechanoreceptors

C. competition between processing of hearing and sight involving light receptors

D. sensory adaptation in hearing involving mechanoreceptors

E. sensory adaptation in sight involving thermoreceptors

Answer 1

The correct answer is D. Sensory adaptation in hearing involving mechanoreceptors

Explanation: You are lying on a sand dune and enjoying. You sit up quickly and you feel momentarily dizzy because the blood pressure is suddenly dropped due to increased flow to the lower part of the body and no compensation by the higher output from the heart. The condition is called orthostatic hypotension. The mechanoreceptors called baroreceptors stimulate the nerves to increase the blood flow. In this case, the hearing ability is impaired due to hypotension.