Exam 10: Sensory Physiology

Activation of a ________ leads to the perception of pain and itch.

The two-point discrimination test

Neuronal cells that are short-lived and therefore are frequently replaced are

The cilia of the hair cells of the semicircular canals are embedded in the

The photosensitive pigment synthesized from vitamin A is

Activation of Gₒlf in the olfactory receptor cells causes ________ to open, which causes the frequency of action potentials to ________.

Match the specific receptor to its typical stimulus. -stretch

Endolymph is a unique fluid in the cochlear duct that contains more ________ and less ________ than the typical extracellular fluid.

Months after the accident, your amputee uncle's phantom limb pain subsides.One afternoon he is sleeping and you see a fly walk across his upper lip.He wakes up and tells you he just had the funniest feeling.It was as if someone was touching his missing index finger.You decide to experiment with your uncle and you blindfold him.As you touch his cheek he tells you that you are touching his cheek and his missing thumb! As you move around his face you map out his fingers and forearm on his face.Hypothesize how this could be possible.

Which of the following are responsible for a receptor adapting to a stimulus?

Provide three reasons for the greater visual acuity at the fovea.

Gustatory cells that respond to sweet, bitter or umami are called

A molecule that prevents substance P from binding to its receptor would

The ________ adjusts the shape of the lens to keep objects in focus.

Which of the following would be an adequate stimulus for a chemoreceptor?

Greater visual acuity results from convergence of ________ numbers of photoreceptors onto retinal ganglion cells.

Sensory neurons that maintain their firing as long as the stimulus is present are called ________.

A sensory receptor is a ________ that converts a stimulus into electrical graded potentials.

________ cells connect photoreceptors to ganglion cells.

________ between hair cell stereocilia ensure that when the largest stereocilia is bent, all of the sterocilia are bent thereby gating more ion channels.