Question 1

A photoreceptor generates action potentials when its photopigment is activated.

Accepted Answer

A) True 
 B)False

Question 2

Rods are not present in the fovea or the blind spot, whereas cones are present in the fovea but not in the blind spot.

Accepted Answer

A) True 
 B)False

Question 3

Photoreceptors, bipolar cells, and ganglion cells all transmit action potentials.

Accepted Answer

A) True 
 B)False

Question 4

Complete each of the following statments.
An incoming pathway for subconscious information derived from the stomach is called a(n) ____________________ afferent, whereas an incoming pathway for information propagated to the conscious levels of the brain is called a(n) ____________________ afferent.

Accepted Answer

The answer of Complete each of the following statments.
An incoming...

Question 5

Complete each of the following statments.
Light is a form of electromagnetic radiation composed of particle-like individual packets of energy called ____________________ that travel in wavelike fashion.

Accepted Answer

The answer of Complete each of the following statments.
Light is...

Question 6

Binding of scent signals to olfactory receptors

Accepted Answer

A)  activates G proteins 
B)  results in cAMP production 
C)  opens sodium channels 
D)  all of these 
E)  activates G proteins and results in cAMP production 
A)  activates G proteins 
B)  results in cAMP production 
C)  opens sodium channels 
D)  all of these 
E)  activates G proteins and results in cAMP production

Question 7

Osmoreceptors are sensitive to changing solute concentrations.

Accepted Answer

A) True 
 B)False

Question 8

Tonic receptors

Accepted Answer

A)  adapt rapidly 
B)  frequently exhibit an "off-response" 
C)  can measure the degree of joint flexion 
D)  all of these 
E)  none of these 
A)  adapt rapidly 
B)  frequently exhibit an "off-response" 
C)  can measure the degree of joint flexion 
D)  all of these 
E)  none of these

Question 9

What condition is caused by uneven curvatures in the lens?

Accepted Answer

A)  astigmatism 
B)  myopia 
C)  presbyopia 
D)  hyperopia 
E)  none of these 
A)  astigmatism 
B)  myopia 
C)  presbyopia 
D)  hyperopia 
E)  none of these

Question 10

Parasympathetic neurons stimulate the circular muscle of the iris to contract in response to dim light.

Accepted Answer

A) True 
 B)False

Question 11

A concave lens is used to correct for a myopic eye.

Accepted Answer

A) True 
 B)False

Question 12

Light rays travel faster through water or glass than through air.

Accepted Answer

A) True 
 B)False

Question 13

A receptor cell initially develops a generator potential by the influx of potassium.

Accepted Answer

A) True 
 B)False

Question 14

Sour taste is caused by the hydrogen ions from acids, while bitter taste is caused by alkaloid substances such as caffeine.

Accepted Answer

A) True 
 B)False

Question 15

Each region of the auditory cortex becomes excited only in response to a specific tone detected by a selected portion of the basilar membrane.

Accepted Answer

A) True 
 B)False

Question 16

Rapid reduction in sensitivity to a new odor results from rapid adaptation of the olfactory receptors.

Accepted Answer

A) True 
 B)False

Question 17

Complete each of the following statments.
____________________, a neurotransmitter unique to pain fibers, is released from afferent pain terminals.

Accepted Answer

The answer of Complete each of the following statments.
____________________, a...

Question 18

Photoreceptors are depolarized in the absence of stimulation (i.e., in the dark) and hyperpolarized when stimulated (i.e., when exposed to light).

Accepted Answer

A) True 
 B)False

Question 19

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

Accepted Answer

A) True 
 B)False

Question 20

The ossicular system transmits the vibrations of the tympanic membrane to the oval window, movement of which first sets up pressure waves in the endolymph.

Accepted Answer

A) True 
 B)False

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

A photoreceptor generates action potentials when its photopigment is activated.

Rods are not present in the fovea or the blind spot, whereas cones are present in the fovea but not in the blind spot.

Photoreceptors, bipolar cells, and ganglion cells all transmit action potentials.

Complete each of the following statments. An incoming pathway for subconscious information derived from the stomach is called a(n) ____________________ afferent, whereas an incoming pathway for information propagated to the conscious levels of the brain is called a(n) ____________________ afferent.

Complete each of the following statments. Light is a form of electromagnetic radiation composed of particle-like individual packets of energy called ____________________ that travel in wavelike fashion.

Binding of scent signals to olfactory receptors

Osmoreceptors are sensitive to changing solute concentrations.

Tonic receptors

What condition is caused by uneven curvatures in the lens?

Parasympathetic neurons stimulate the circular muscle of the iris to contract in response to dim light.

A concave lens is used to correct for a myopic eye.

Light rays travel faster through water or glass than through air.

A receptor cell initially develops a generator potential by the influx of potassium.

Sour taste is caused by the hydrogen ions from acids, while bitter taste is caused by alkaloid substances such as caffeine.

Each region of the auditory cortex becomes excited only in response to a specific tone detected by a selected portion of the basilar membrane.

Rapid reduction in sensitivity to a new odor results from rapid adaptation of the olfactory receptors.

Complete each of the following statments. ____________________, a neurotransmitter unique to pain fibers, is released from afferent pain terminals.

Photoreceptors are depolarized in the absence of stimulation (i.e., in the dark) and hyperpolarized when stimulated (i.e., when exposed to light).

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

The ossicular system transmits the vibrations of the tympanic membrane to the oval window, movement of which first sets up pressure waves in the endolymph.

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. An incoming pathway for subconscious information derived from the stomach is called a(n) afferent, whereas an incoming pathway for information propagated to the conscious levels of the brain is called a(n) afferent.