Medical Quiz

Nervous System and Special Senses Quiz

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The ability to respond to a stimulus is termed:

A. conductivity

B. depolarized

C. all-or-nothing response

D. polarized


This portion of the ear is responsible for directing sound waves into the eardrum.

A. outer ear

B. middle ear

C. inner ear

D. eustachian tube


Impulse conduction is fastest in neurons that are:

A. myelinated

B. unmyelinated

C. sensory

D. motor


The elevated ridges of tissue on the surface of the cerebral hemispheres are known as ______ while the shallow grooves are termed ______.

A. gyri; sulci

B. sulci; gyri

C. ganglia; gyri

D. tracts; ganglia


Which of the following is NOT considered a special sense:

A. smell

B. touch

C. singing

D. vision


An action potential:

A. is essential for nerve impulse propagation

B. involves the influx of negative ions to depolarize the membrane

C. involves the outflux of negative ions to depolarize the membrane

D. involves the outflux of positive ions to depolarize the membrane


What are the specialized nerve cells that sense smell?

A. olfactory nerves

B. motor neurons

C. glossopharyngeal

D. optic nerve


Allows light waves to enter the eye

A. sclera

B. iris

C. pupil

D. cornea


The neuron processes that normally receives incoming stimuli are called:

A. axons

B. dendrites

C. neuronelemmas

D. schwann cells


The Schwann cells form a myelin sheath around the:

A. dendrites

B. cell body

C. axon

D. nucleus


The olfactory area is found within the:

A. temporal lobe

B. frontal lobe

C. occipital lobe

D. parietal lobe


A neuron with a cell body located in the CNS whose primary function is connecting other neurons is called a(n):

A. interneuron

B. afferent neuron

C. efferent neuron

D. glial cell


Loss of muscle coordination results from damage to the:

A. cerebrum

B. cerebellum

C. thalamus

D. midbrain


Where are the three bones of the ear found

A. middle ear

B. inner ear

C. outer ear

D. auditory canal


Which structure regulates the size of the pupil:

A. iris

B. retina

C. cornea

D. sclera


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