Question 1

Vision in bright light is chiefly due to cone activation.

Accepted Answer

A) True 
 B)False

Question 2

MATCHING
Match the receptor below to its function by using the answer code.
-generates action potentials in afferent neuron by opening messenger-gated channels

Accepted Answer

A) tonic receptor 
B) phasic receptor 
C) specialized receptor ending of afferent neuron 
D) separate cell serving as a receptor 
A) tonic receptor 
B) phasic receptor 
C) specialized receptor ending of afferent neuron 
D) separate cell serving as a receptor

Question 3

What is the first structure to intercept light as it enters the eye?

Accepted Answer

A)  aqueous humour 
B)  cornea 
C)  lens 
D)  retina 
A)  aqueous humour 
B)  cornea 
C)  lens 
D)  retina

Question 4

Which statement concerning colour vision is correct?

Accepted Answer

A)  It is accomplished by rods at night and cones during the day. 
B)  It depends on the three cone types' various ratios of stimulation in response to different wavelengths of light. 
C)  It is usually lost in vitamin A deficiency. 
D)  It depends on activation of a specific cone for each visible colour. 
A)  It is accomplished by rods at night and cones during the day. 
B)  It depends on the three cone types' various ratios of stimulation in response to different wavelengths of light. 
C)  It is usually lost in vitamin A deficiency. 
D)  It depends on activation of a specific cone for each visible colour.

Question 5

Light rays passing through a concave lens undergo convergence.

Accepted Answer

A) True 
 B)False

Question 6

Which statement concerning receptors is correct?

Accepted Answer

A)  They 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)  They are present for every modality in the environment. 
C)  When stimulated, they bring about opening of K+ channels in the efferent neuron membrane 
D)  Mechanical receptors are sensitive to varying amounts of heat 
A)  They 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)  They are present for every modality in the environment. 
C)  When stimulated, they bring about opening of K+ channels in the efferent neuron membrane 
D)  Mechanical receptors are sensitive to varying amounts of heat

Question 7

Binocular vision enhances depth perception.

Accepted Answer

A) True 
 B)False

Question 8

What is the role of glutamate in the pain pathways?

Accepted Answer

A)  binds to AMPA receptors on dorsal horn cells 
B)  results in numbness of damaged tissue 
C)  causes P-substance release 
D)  major inhibitory neurotransmitter 
A)  binds to AMPA receptors on dorsal horn cells 
B)  results in numbness of damaged tissue 
C)  causes P-substance release 
D)  major inhibitory neurotransmitter

Question 9

Cone photoreceptors provide high visual acuity.

Accepted Answer

A) True 
 B)False

Vision in bright light is chiefly due to cone activation.

MATCHING Match the receptor below to its function by using the answer code. -generates action potentials in afferent neuron by opening messenger-gated channels

What is the first structure to intercept light as it enters the eye?

Which statement concerning colour vision is correct?

Light rays passing through a concave lens undergo convergence.

Which statement concerning receptors is correct?

Binocular vision enhances depth perception.

What is the role of glutamate in the pain pathways?

Cone photoreceptors provide high visual acuity.

The Foundation of Physiology

Cell Physiology

The Central Nervous System

Principals of Endocrinology; The Central Endocrine Glands

Muscle Physiology

Cardiac Physiology

Vascular Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acid Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine Glands

The Reproductive System

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Exam 4: The Peripheral Nervous System

Vision in bright light is chiefly due to cone activation.

MATCHING Match the receptor below to its function by using the answer code. -generates action potentials in afferent neuron by opening messenger-gated channels

What is the first structure to intercept light as it enters the eye?

Which statement concerning colour vision is correct?

Light rays passing through a concave lens undergo convergence.

Which statement concerning receptors is correct?

Binocular vision enhances depth perception.

What is the role of glutamate in the pain pathways?

Cone photoreceptors provide high visual acuity.

The Foundation of Physiology

Cell Physiology

The Central Nervous System

Principals of Endocrinology; The Central Endocrine Glands

Muscle Physiology

Cardiac Physiology

Vascular Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acid Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine Glands

The Reproductive System

Filters