1. Each vestibular apparatus contains 5 sites at which mechanoreceptors are foun

Question

1. Each vestibular apparatus contains 5 sites at which mechanoreceptors are found. Are these mechanoreceptors modified neurons?

yes or no

2. Are the intrafusal fibers found within muscle spindles modified neurons?

yes or no

3. Are vestibular cell used to detect linear acceleration of the head, rotary acceleration of the head, up and down, as well as left and right?

yes or   no, only acceleration / deceleration of the head

4. Vestibular cells are mechanoreceptors because they respond to physical deformation. However, vestibular cells are biphasic mechanoreceptors because deformation can either depolarize or hyperpolarize their plasma membrane. The value the membrane potential assumes at any given moment is determined by the magnitude of

K+flux or Na+flux

5. Does the term biphasic mean that the rate of glutamate secretion from vestibular cells can go up or down from a basal rate?

yes or no

Explanation / Answer

1- Yes these mechanoreceptro are sensory receptor they are like afferent nuerons

2- yes the intrafusal fibers are found within muscle spindles modified neurons

3- yes its also functioning in sense of balance and  spatial orientation for the purpose of coordinating movement with balance. Together with the cochlea, a part of the auditory system

4- involve both K influx and Na exflux but if we choose one so we can choose Na flux

5- No

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