Exam 6: The Peripheral Nervous System: Afferent Division Special Senses

Match the following term with its description. a.timbre b.pitch c.intensity -Sound loudness

Match the following eye disorder with its description. a.color blindness b.night blindness c.glaucoma d.hyperopia e.diplopia f.presbyopia g.myopia h.cataract i.astigmatism -Corrected by convex lens

Second- and third-order sensory neurons synapse in the thalamus.

Indicate the characteristics associated with each part of the ear using the answer code below: a.external ear b.middle ear c.cochlea d.semicircular canal e.utricle and saccule f.external ear and middle ear g.cochlea, semicircular canal, utricle and saccule h.semicircular canal, utricle and saccule i.cochlea and semicircular canal -Provides information useful for keeping the eyes focused on a fixed object even when the head is moving

Accommodation permits near vision.

The utricle is

Short-wave lengths of light within the visible spectrum are sensed as violet or blue.

Match the receptor below to its function. a.tonic receptor b.phasic receptor c.specialized receptor ending of afferent neuron d.separate cell serving as a receptor -Generates action potentials in afferent neuron by opening messenger-gated channels

The fovea is the point on the retina where the optic nerve leaves.

Indicate the properties of rods and cones using the following answer code: a.rods b.cones c.both rods and cones -High acuity

Focusing on an object moving closer to the eye requires suspensory ligaments becoming more taut.

Indicate the properties of rods and cones using the following answer code: a.rods b.cones c.both rods and cones -Used primarily for day vision

Define sensory adaptation and describe how it occurs in a Pacinian corpuscle.

Which sites are located within the central nervous system?

Phasic receptors are rapidly adapting receptors.

Indicate the properties associated with each type of nociceptor by using the answer code below: a.mechanical nociceptor b.thermal nociceptor c.polymodal nociceptor d.mechanical nociceptor and thermal nociceptor -Activates slow pain pathway

Myopia is another name for ____________________, whereas ____________________ is the name for a reduction in accommodative ability.

Sensory information from the skeletal muscles enters the central nervous system by visceral efferent neurons.

Osmoreceptors are sensitive to changing solute concentrations.

____________________ are traveling vibrations of air that consist of alternating with regions of low pressure caused by rarefaction of the molecules.