Question 1

Taste is perceived in a region located adjacent to the "tongue" region of the somatosensory cortex.

Accepted Answer

A) True 
 B)False  True

Question 2

Which of the following does not occur in a photoreceptor during exposure to light?

Accepted Answer

A)  membrane hyperpolarization 
B)  closure of Na+ channels in the outer segment 
C)  increased transmitter release from the synaptic terminal 
D)  decrease in cyclic GMP in the outer segment 
E)  closure of Ca2+ channels in the synaptic terminal 
A)  membrane hyperpolarization 
B)  closure of Na+ channels in the outer segment 
C)  increased transmitter release from the synaptic terminal 
D)  decrease in cyclic GMP in the outer segment 
E)  closure of Ca2+ channels in the synaptic terminal C

Question 3

Unlike the visual pathways, auditory signals from each ear are transmitted to both hemispheres.

Accepted Answer

A) True 
 B)False  True

Question 4

In order for accommodation to occur:

Accepted Answer

A)  The shape of the cornea must be changed. 
B)  The shape of the lens must be changed. 
C)  The ciliary muscle is relaxed for near vision. 
D)  The ciliary muscle is contracted for distant vision. 
E)  All of these, except the shape of the cornea must be changed. 
A)  The shape of the cornea must be changed. 
B)  The shape of the lens must be changed. 
C)  The ciliary muscle is relaxed for near vision. 
D)  The ciliary muscle is contracted for distant vision. 
E)  All of these, except the shape of the cornea must be changed.

Question 5

Sounds at 1000 cycles per second vibrate the basilar membrane closer to the oval window, while sounds at 2000 cycles per second vibrate the membrane closer to the helicotrema.

Accepted Answer

A) True 
 B)False

Question 6

The pitch of a sound

Accepted Answer

A)  is determined by the frequency of vibrations of air molecules 
B)  depends on the amplitude of the waves 
C)  is measured in units called decibels 
D)  determines a sound's loudness 
E)  all of these 
A)  is determined by the frequency of vibrations of air molecules 
B)  depends on the amplitude of the waves 
C)  is measured in units called decibels 
D)  determines a sound's loudness 
E)  all of these

Question 7

High- and low-frequency sounds are discriminated chiefly by

Accepted Answer

A)  low frequencies producing stronger vibrations 
B)  high frequencies producing larger action potentials 
C)  the middle ear bones vibrating more vigorously for low frequencies 
D)  low frequencies deflecting the basilar membrane at a greater distance from the oval window 
E)  low frequencies setting up fluid vibrations in the perilymph 
A)  low frequencies producing stronger vibrations 
B)  high frequencies producing larger action potentials 
C)  the middle ear bones vibrating more vigorously for low frequencies 
D)  low frequencies deflecting the basilar membrane at a greater distance from the oval window 
E)  low frequencies setting up fluid vibrations in the perilymph

Question 8

The ossicular system of the ear

Accepted Answer

A)  serves to keep the pressure on the two sides of the tympanic membrane equal 
B)  increases the pressure of vibration as it transfers the sound wave from air in the outer ear to fluid in the inner ear 
C)  assists in determining whether a sound comes from the front or rear 
D)  is part of the vestibular apparatus 
E)  is in direct contact with the tympanic membrane and the round window 
A)  serves to keep the pressure on the two sides of the tympanic membrane equal 
B)  increases the pressure of vibration as it transfers the sound wave from air in the outer ear to fluid in the inner ear 
C)  assists in determining whether a sound comes from the front or rear 
D)  is part of the vestibular apparatus 
E)  is in direct contact with the tympanic membrane and the round window

Question 9

Sympathetic stimulation of the iris causes contraction of the radial muscle and thus produces pupil dilation.

Accepted Answer

A) True 
 B)False

Question 10

Deflection of the basilar membrane

Accepted Answer

A)  activates receptors of the scala tympani 
B)  occurs in response to fluid movements in the utricle 
C)  results in vibrations in endolymph 
D)  does not result from vibrations in perilymph 
E)  all of these 
A)  activates receptors of the scala tympani 
B)  occurs in response to fluid movements in the utricle 
C)  results in vibrations in endolymph 
D)  does not result from vibrations in perilymph 
E)  all of these

Question 11

Complete each of the following statments.
Glucose interacts with "____________________" receptor binding sites on the surface of the tongue.

Accepted Answer

The answer of Complete each of the following statments.
Glucose interacts...

Question 12

Which of the following statements about myopia is correct?

Accepted Answer

A)  The curvature of the lens is uneven. 
B)  A near source of light is focused on the retina without accommodation. 
C)  A convex lens is used to correct the condition. 
D)  The images from the two eyes are not fused within the cortex. 
E)  There is increased intraocular pressure. 
A)  The curvature of the lens is uneven. 
B)  A near source of light is focused on the retina without accommodation. 
C)  A convex lens is used to correct the condition. 
D)  The images from the two eyes are not fused within the cortex. 
E)  There is increased intraocular pressure.

Question 13

As light passes from one medium to a medium of a different density, it

Accepted Answer

A)  is refracted 
B)  bends at specific angles 
C)  changes wavelengths 
D)  is refracted and bends at specific angles 
E)  none of these 
A)  is refracted 
B)  bends at specific angles 
C)  changes wavelengths 
D)  is refracted and bends at specific angles 
E)  none of these

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

Select the incorrect statement about slow pain.

Accepted Answer

A)  It is carried by large, myelinated A-delta fibers. 
B)  It is poorly localized. 
C)  It occurs by the stimulation of polymodal nociceptors. 
D)  It occurs for a longer time than fast pain. 
E)  It produces a dull, aching, burning sensation. 
A)  It is carried by large, myelinated A-delta fibers. 
B)  It is poorly localized. 
C)  It occurs by the stimulation of polymodal nociceptors. 
D)  It occurs for a longer time than fast pain. 
E)  It produces a dull, aching, burning sensation.

Question 16

Cone photoreceptors provide high visual acuity.

Accepted Answer

A) True 
 B)False

Question 17

Activation of a sensory pathway at any point gives rise to the same sensation that would be produced by stimulation of the receptors in the body part itself.

Accepted Answer

A) True 
 B)False

Question 18

Complete each of the following statments.
The point of the retina with the most distinct vision is the ____________________, and it is located within a specific region of the retina called the ____________________.

Accepted Answer

The answer of Complete each of the following statments.
The point...

Question 19

Receptors transduce one form of energy into electrical energy.

Accepted Answer

A) True 
 B)False

Question 20

In which structure do sound waves first pass?

Accepted Answer

A)  cochlear duct 
B)  scala media 
C)  scala tympani 
D)  scala vestibuli 
E)  helicotrema 
A)  cochlear duct 
B)  scala media 
C)  scala tympani 
D)  scala vestibuli 
E)  helicotrema

Exam 6: A--The Peripheral Nervous System: Afferent Division; Special Senses

Taste is perceived in a region located adjacent to the "tongue" region of the somatosensory cortex.

Which of the following does not occur in a photoreceptor during exposure to light?

Unlike the visual pathways, auditory signals from each ear are transmitted to both hemispheres.

In order for accommodation to occur:

Sounds at 1000 cycles per second vibrate the basilar membrane closer to the oval window, while sounds at 2000 cycles per second vibrate the membrane closer to the helicotrema.

The pitch of a sound

High- and low-frequency sounds are discriminated chiefly by

The ossicular system of the ear

Sympathetic stimulation of the iris causes contraction of the radial muscle and thus produces pupil dilation.

Deflection of the basilar membrane

Complete each of the following statments. Glucose interacts with "____________________" receptor binding sites on the surface of the tongue.

Which of the following statements about myopia is correct?

As light passes from one medium to a medium of a different density, it

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

Select the incorrect statement about slow pain.

Cone photoreceptors provide high visual acuity.

Activation of a sensory pathway at any point gives rise to the same sensation that would be produced by stimulation of the receptors in the body part itself.

Complete each of the following statments. The point of the retina with the most distinct vision is the ____________________, and it is located within a specific region of the retina called the ____________________.

Receptors transduce one form of energy into electrical energy.

In which structure do sound waves first pass?

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

A--The Central Nervous System

B--The Central Nervous System

B--The Peripheral Nervous System: Afferent Division; Special Senses

The Peripheral Nervous System: Efferent Division

A--Muscle Physiology

B--Muscle Physiology

A--Cardiac Physiology

B--Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

A--The Respiratory System

B--The Respiratory System

A--The Urinary System

B--The Urinary System

A--Fluid and Acid-Base Balance

B--Fluid and Acid-Base Balance

A--The Digestive System

B--The Digestive System

Energy Balance and Temperature Regulation

A--Principles of Endocrinology: the Central Endocrine Glands

B--Principles of Endocrinology: the Central Endocrine Glands

A--The Peripheral Endocrine Glands

B--The Peripheral Endocrine Glands

A--The Reproductive System

B--The Reproductive System

Filters

Complete each of the following statments. The point of the retina with the most distinct vision is the , and it is located within a specific region of the retina called the .