Question 1

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

Accepted Answer

A) True 
 B)False

Question 2

The lens of the eye

Accepted Answer

A)  has convex surfaces 
B)  is stronger when it is flatter 
C)  contributes most extensively to the eye's total refractive ability 
D)  has convex surfaces and is stronger when it is flatter 
E)  all of these 
A)  has convex surfaces 
B)  is stronger when it is flatter 
C)  contributes most extensively to the eye's total refractive ability 
D)  has convex surfaces and is stronger when it is flatter 
E)  all of these

Question 3

Unmyelinated C fibers transmit impulses for slow pain pathways.

Accepted Answer

A) True 
 B)False

Question 4

Retinal is derived from vitamin A and is found in rods but not the cones.

Accepted Answer

A) True 
 B)False

Question 5

Sour taste represents stimuli caused by

Accepted Answer

A)  acids 
B)  salts 
C)  bases 
D)  sugars 
E)  alkaloids 
A)  acids 
B)  salts 
C)  bases 
D)  sugars 
E)  alkaloids

Question 6

Complete each of the following statments.
The intensity of a stimulus is coded by the ____________________ of the action potentials sent along the related afferent neuron.

Accepted Answer

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

Question 7

The structure associated with pheromonal reception is

Accepted Answer

A)  the nasal organ 
B)  the olfactory mucosa 
C)  papillae 
D)  taste buds 
E)  vomeronasal organ 
A)  the nasal organ 
B)  the olfactory mucosa 
C)  papillae 
D)  taste buds 
E)  vomeronasal organ

Question 8

The vestibular nuclei provide output important in maintaining balance and posture.

Accepted Answer

A) True 
 B)False

Question 9

The image on the retina is reversed upside down and backwards because of bending of light rays.

Accepted Answer

A) True 
 B)False

Question 10

Descending analgesic pathways are believed to suppress transmission in the pain pathways as they enter the spinal cord by blocking the release of substance P.

Accepted Answer

A) True 
 B)False

Question 11

The primary olfactory cortex is on the temporal lobe.

Accepted Answer

A) True 
 B)False

Question 12

The visual message detected by the retina is transmitted intact to the visual cortex.

Accepted Answer

A) True 
 B)False

Question 13

Receptor potentials can be graded, with a stronger stimulus resulting in a larger receptor potential.

Accepted Answer

A) True 
 B)False

Question 14

Complete each of the following statments.
The lateral geniculate nucleus is located in the part of the brain called the ____________________.

Accepted Answer

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

Question 15

Complete each of the following statments.
The eye structure with the greatest refractive ability is the ____________________.

Accepted Answer

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

Question 16

The fovea

Accepted Answer

A)  is located in the exact center of the retina 
B)  contains a greater abundance of rods than cones 
C)  is the point on the retina at which the optic nerve leaves and blood vessels pass through 
D)  all of these 
E)  is located in the exact center of the retina and is the point on the retina at which the optic nerve leaves and blood vessels pass through 
A)  is located in the exact center of the retina 
B)  contains a greater abundance of rods than cones 
C)  is the point on the retina at which the optic nerve leaves and blood vessels pass through 
D)  all of these 
E)  is located in the exact center of the retina and is the point on the retina at which the optic nerve leaves and blood vessels pass through

Question 17

Visual and hearing receptors are irreplaceable, but taste and olfactory receptors are continuously renewed.

Accepted Answer

A) True 
 B)False

Question 18

Receptors

Accepted Answer

A)  may be either a specialized ending of an afferent neuron or a special cell closely associated with the peripheral ending of an afferent neuron 
B)  exist that are specific for every modality in the environment 
C)  when stimulated enough may cause Na+ channels in the afferent neuron membrane to open 
D)  exist that are specific for every modality in the environment, and when stimulated enough may cause Na+ channels in the afferent neuron membrane to open. 
E)  all of these 
A)  may be either a specialized ending of an afferent neuron or a special cell closely associated with the peripheral ending of an afferent neuron 
B)  exist that are specific for every modality in the environment 
C)  when stimulated enough may cause Na+ channels in the afferent neuron membrane to open 
D)  exist that are specific for every modality in the environment, and when stimulated enough may cause Na+ channels in the afferent neuron membrane to open. 
E)  all of these

Question 19

Each half of the visual cortex receives information from the opposite half of the visual field as detected by both eyes.

Accepted Answer

A) True 
 B)False

Question 20

The vibrational stimulus normally passes through the middle ear ossicles in the order:

Accepted Answer

A)  incus to the malleus to the stapes 
B)  incus to the stapes to the incus 
C)  malleus to the incus to the stapes 
D)  malleus to the stapes to the incus 
E)  stapes to the malleus to the incus 
A)  incus to the malleus to the stapes 
B)  incus to the stapes to the incus 
C)  malleus to the incus to the stapes 
D)  malleus to the stapes to the incus 
E)  stapes to the malleus to the incus

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

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

The lens of the eye

Unmyelinated C fibers transmit impulses for slow pain pathways.

Retinal is derived from vitamin A and is found in rods but not the cones.

Sour taste represents stimuli caused by

Complete each of the following statments. The intensity of a stimulus is coded by the ____________________ of the action potentials sent along the related afferent neuron.

The structure associated with pheromonal reception is

The vestibular nuclei provide output important in maintaining balance and posture.

The image on the retina is reversed upside down and backwards because of bending of light rays.

Descending analgesic pathways are believed to suppress transmission in the pain pathways as they enter the spinal cord by blocking the release of substance P.

The primary olfactory cortex is on the temporal lobe.

The visual message detected by the retina is transmitted intact to the visual cortex.

Receptor potentials can be graded, with a stronger stimulus resulting in a larger receptor potential.

Complete each of the following statments. The lateral geniculate nucleus is located in the part of the brain called the ____________________.

Complete each of the following statments. The eye structure with the greatest refractive ability is the ____________________.

The fovea

Visual and hearing receptors are irreplaceable, but taste and olfactory receptors are continuously renewed.

Receptors

Each half of the visual cortex receives information from the opposite half of the visual field as detected by both eyes.

The vibrational stimulus normally passes through the middle ear ossicles in the order:

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

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