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Which receptor type is used to detect free hydrogen ion content of blood?


A) baroreceptors
B) mechanical nociceptors
C) chemoreceptors
D) osmoreceptors
E) photoreceptors

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The bone overlying the olfactory epithelium is called the


A) sphenoid.
B) frontal.
C) maxilla.
D) cribriform plate.
E) vomer.

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The amount of light that impinges on the retina is primarily regulated by what structure?


A) optic disk
B) fovea
C) ciliary body
D) iris
E) cornea

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Cytokines released during illness can cause a person to be more sensitive to pain.

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Which of the following is the correct order of communication of visual information in the retina?


A) photoreceptor, ganglion cell, bipolar cell
B) bipolar cell, ganglion cell, photoreceptor
C) bipolar cell, photoreceptor, ganglion cell
D) ganglion cell, bipolar cell, photoreceptor
E) photoreceptor, bipolar cell, ganglion cell

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Bending of stereocilia of a hair cell toward the kinocilium causes (depolarization / hyperpolarization)of the hair cell.

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What are sensory receptors that respond to tissue- damaging stimuli or stimuli that have the potential to damage tissue?


A) thermoreceptors
B) Merkel's disk
C) nociceptors
D) proprioceptors
E) Meissner's corpuscle

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The absence of pain, but not other somatosensations, is called (anesthesia / analgesia).

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The anterior portion of the semicircular canal detects acceleration in which direction?


A) rotating the head as in saying "no"
B) linear acceleration in the up and down directions
C) linear acceleration in the forward and backward directions
D) the rotation of the head from side to side, as in moving the ear toward the shoulder
E) moving the head up and down as in saying "yes"

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E

Which receptor type is used to detect increases in temperature between 30°C and 43°C?


A) warm receptors
B) cold receptors
C) chemoreceptors
D) osmoreceptors
E) mechanical nociceptors

Correct Answer

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What is a condition where light, originating from a distance, is focused in front of the retina?


A) emmetropia
B) hyperopia
C) neurotropia
D) myopia
E) presbyopia

Correct Answer

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(Rods / Cones)are more sensitive to light.

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Each taste receptor cell is specific to only one of the four primary tastes.

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What are the strands of connective tissue that connect the lens to muscles for accommodation called?


A) ciliary muscles
B) cornea
C) pupil
D) optic disk
E) zonular fibers

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The detection of sweet by taste receptors occurs via the binding of organic molecules to receptors on the cell membrane activating that ultimately causes a _.


A) gustducin : sodium channel to close
B) transducin : sodium channel to close
C) transducin : potassium channel to open
D) Golf : potassium channel to close
E) gustducin : potassium channel to close

Correct Answer

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E

A (concave / convex)lens causes light waves to converge onto a focal point.

Correct Answer

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Frequency of sound is coded for by the


A) amplitude of the action potentials.
B) frequency of action potentials.
C) number of hair cells stimulated.
D) direction that the stereocilia are stimulated.
E) location of the hair cell stimulated.

Correct Answer

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The point on the retina with greatest visual acuity is the optic disk.

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What molecules within the mucus of the olfactory epithelium carry odorants to the receptor on the cilia?


A) olfactory binding proteins
B) sustentacular proteins
C) cAMP
D) Golf
E) hydrophilic

Correct Answer

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A

Both the auditory and vestibular systems rely upon to detect movement of fluid within the ear.


A) hair cells
B) chemoreceptors
C) hydroreceptors
D) magnetoreceptors
E) thermoreceptors

Correct Answer

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