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Neuroscience Exam Questions & answers.
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Neuroscience Exam Questions &answers.
Which of the following sensory receptors responds to its adequate stimulus with hyperpolarization:
A. Auditory hair cells
B. Vestibular hair cells
C. Taste cells
D. Olfactory receptor neurons
E. Retinal rods ANS -E. Retinal rods
Abnormal color vision is 20 times more common in men than women because most cases are caused by
an abnormal:
A. Dominant gene on the Y chromosome
B. Recessive gene on the Y chromosome
C. Dominant gene on the X chromosome
D. Recessive gene on the X chromosome
E. Recessive gene on chromosome 21 ANS -D. Recessive gene on the X chromosome
Post-rotational nystagmus is caused by continued movement
A. Aqueous humor over the ciliary body of the eye
B. Cerebrospinal fluid over the parts of the brainstem that contain the vestibular nuclei
C. Endolymph in the semicircular canals, with consequent bending of the cupula and stimulation of hair
cells
D. Endolymph towards the helicotrema
E. Perilymph over hair cells that have their processes embedded in the tectorial membrane ANS -C.
Endolymph in the semicircular canals, with consequent bending of the cupula and stimulation of hair
cells
,The direction of nystagmus is left if warm water is put in
A. The left ear canal
B. The right ear canal
C. The nose
D. The mouth
E. The rectum ANS -A. The left ear canal
Impulses generated by the olfactory receptors in the nasal mucosa
A. Pass through the substantia nigra
B. Pass through the internal capsule
C. Are relayed to the olfactory cortex via the hypothalamus
D. Pass to the mitral cells and from there directly to the cerebral cortex
E. Pass to the mitral cells and from there to the amygdala and then to the cerebral cortex ANS -D. Pass
to the mitral cells and from there directly to the cerebral cortex
Impulses generated in the taste buds of the tongue reach the cerebral cortex via the
A. Thalamus
B. Hypothalamus
C. Internal capsule
D. Dorsal roots of the first cervical spinal nerves
E. Trochlear Nerve ANS -A. Thalamus
Which of the following senses is most strongly associated with aversive conditioning?
A. Pressure
,B. Taste
C. Vision
D. Olfaction
E. Linear acceleration
F. Hearing ANS -B. Taste
Diminished sense of smell in association with reproductive dysfunction is due to a deficiency of
A. Rhodopsin
B. Transducin
C. Folic Acid
D. Dopamine
E. Gonadotropin-Releasing Hormone ANS -E. Gonadotropin-Releasing Hormone
A specific thalamic nucleus that projects information associated with vision is the
A. Medial geniculate body
B. Anterior nucleus
C. Ventroposterior Lateral nucleus
D. Lateral geniculate body
E. Pulvinar ANS -D. Lateral geniculate body
In comparison with cones, rods
A. Are more common in the central retina
B. Are more involved in color vision
C. Yield a greater acuity of vision
D. Have their maximum sensitivity in bright light
E. Have a lower threshold for light ANS -E. Have a lower threshold for light
, Tunnel vision (bitemporal hemianopsia) can be associated with lesions of the
A. Visual cortex
B. Lateral geniculate body
C. Optic radiation
D. Optic chiasm
E. Optic nerve ANS -D. Optic chiasm
Instant blindness in one eye would occur from transection of destruction of the
A. Optic nerve
B. Optic tract
C. Right half of the optic chiasm
D. Superior colliculus
E. Temporal lobe ANS -A. Optic nerve
Which of the following deficits would result from a selective loss of cones in the retina?
A. Fovea blindness
B. Night blindness
C. Diplopia (double vision)
D. Enhanced lateral inhibition
E. Vertigo ANS -A. Fovea blindness
Damage to which of the following cranial nerves would account for complaints of dizziness, vomiting,
and nausea over the past 10 days? The patient also reports that the room appears to be spinning, and
has difficulty getting on and off the examination table.
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