Question 1

Which activities occur in the presence of light within the phototransduction pathway?

Accepted Answer

A)  Ganglion cells produce action potentials. 
B)  cGMP levels are high in receptors. 
C)  Bipolar cells produce graded potentials. 
D)  Sodium channels open in receptors. 
A)  Ganglion cells produce action potentials. 
B)  cGMP levels are high in receptors. 
C)  Bipolar cells produce graded potentials. 
D)  Sodium channels open in receptors.

Question 2

What is the conscious interpretation of external stimuli?

Accepted Answer

A)  proprioceptive sensation 
B)  rising blood pressure 
C)  sensory perception 
D)  dilation of pupils 
A)  proprioceptive sensation 
B)  rising blood pressure 
C)  sensory perception 
D)  dilation of pupils

Question 3

Match the following eye disorder with its description by using the following answer code (options may be used more than once or not at all).
-corrected by cylindrical lens

Accepted Answer

A) colour blindness 
B) night blindness 
C) glaucoma 
D) hyperopia 
E) diplopia
F)presbyopia
G)myopia lens
H)cataract
I)astigmatism 
A) colour blindness 
B) night blindness 
C) glaucoma 
D) hyperopia 
E) diplopia
F)presbyopia
G)myopia lens
H)cataract
I)astigmatism

Question 4

Indicate the proper sequence of involvement in the visual pathway by writing the appropriate letter in the blank using the answer code.
-fifth

Accepted Answer

A) bipolar neurons 
B) optic nerve 
C) lateral geniculate nucleus 
D) rods and cones 
E) visual cortex
F)optic tracts
G)ganglion cells
H)optic radiations 
A) bipolar neurons 
B) optic nerve 
C) lateral geniculate nucleus 
D) rods and cones 
E) visual cortex
F)optic tracts
G)ganglion cells
H)optic radiations

Question 5

The __________ is the layer of the eye that contains the photoreceptor cells.

Accepted Answer

The answer of The __________ is the layer of the...

Question 6

What 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 
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

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

Which statement concerning fovea is correct?

Accepted Answer

A)  It is located in the exact centre of the retina. 
B)  It contains a greater abundance of rods than cones. 
C)  It is the point on the retina at which the optic nerve leaves and blood vessels pass through. 
D)  It has fairly high acuity. 
A)  It is located in the exact centre of the retina. 
B)  It contains a greater abundance of rods than cones. 
C)  It is the point on the retina at which the optic nerve leaves and blood vessels pass through. 
D)  It has fairly high acuity.

Question 9

Phasic receptors are rapidly adapting receptors.

Accepted Answer

A) True 
 B)False

Question 10

When does natural analgesia occur?

Accepted Answer

A)  when endogenous opiates bind to P-substance 
B)  when endogenous opiates bind to receptors on afferent pain fibres 
C)  when the anterior gray horn is stimulated 
D)  when C fibres are stimulated 
A)  when endogenous opiates bind to P-substance 
B)  when endogenous opiates bind to receptors on afferent pain fibres 
C)  when the anterior gray horn is stimulated 
D)  when C fibres are stimulated

Question 11

What happens during accommodation for near vision?

Accepted Answer

A)  The ciliary muscle relaxes. 
B)  The lens becomes more concave. 
C)  The suspensory ligaments become less taut. 
D)  Both ciliary muscle must relax and lens more concave 
A)  The ciliary muscle relaxes. 
B)  The lens becomes more concave. 
C)  The suspensory ligaments become less taut. 
D)  Both ciliary muscle must relax and lens more concave

Question 12

Which statement concerning olfactory receptors is correct?

Accepted Answer

A)  They are specialized endings of efferent neuronsin separate cells. 
B)  when stimulated, they send impulses both to the limbic system for coordination between smell and behaviour, and to the thalamus and cortex for perception of smell. 
C)  synapse in the thalamus . 
D)  a substance must be fat soluble in order to be smelled. 
A)  They are specialized endings of efferent neuronsin separate cells. 
B)  when stimulated, they send impulses both to the limbic system for coordination between smell and behaviour, and to the thalamus and cortex for perception of smell. 
C)  synapse in the thalamus . 
D)  a substance must be fat soluble in order to be smelled.

Question 13

Glucose interacts with ________ receptor binding sites on the surface of the tongue.

Accepted Answer

The answer of Glucose interacts with ________ receptor binding sites...

Question 14

Retinene is found in the rods but not the cones.

Accepted Answer

A) True 
 B)False

Question 15

Each cone contains three different photopigments for selectively responding to red,blue,or green wavelengths of light.

Accepted Answer

A) True 
 B)False

Question 16

Through lateral inhibition,a more intensely activated receptor pathway halts transmission of impulses in surrounding,less intensely stimulated pathways.

Accepted Answer

A) True 
 B)False

Question 17

Which statement concerning polymodal nociceptors is correct?

Accepted Answer

A)  They respond only to mechanical damage such as cutting, crushing, or pinching. 
B)  They transmit impulses along A-delta fibres. 
C)  They activate the slow pain pathway on stimulation. 
D)  They release prostaglandins. 
A)  They respond only to mechanical damage such as cutting, crushing, or pinching. 
B)  They transmit impulses along A-delta fibres. 
C)  They activate the slow pain pathway on stimulation. 
D)  They release prostaglandins.

Question 18

Match the following eye disorder with its description by using the following answer code (options may be used more than once or not at all).
-vitamin A deficiency

Accepted Answer

A) colour blindness 
B) night blindness 
C) glaucoma 
D) hyperopia 
E) diplopia
F)presbyopia
G)myopia lens
H)cataract
I)astigmatism 
A) colour blindness 
B) night blindness 
C) glaucoma 
D) hyperopia 
E) diplopia
F)presbyopia
G)myopia lens
H)cataract
I)astigmatism

Question 19

Which statement regarding vision is NOT correct?

Accepted Answer

A)  Axons from the temporal half of each retina decussate in the optic chiasm. 
B)  Axons from the nasal half of each retina decussate in the optic chiasm. 
C)  Optic tracts consist of both crossed and uncrossed axons. 
D)  Some retinal ganglionic axon collaterals terminate in the midbrain and hypothalamus. 
A)  Axons from the temporal half of each retina decussate in the optic chiasm. 
B)  Axons from the nasal half of each retina decussate in the optic chiasm. 
C)  Optic tracts consist of both crossed and uncrossed axons. 
D)  Some retinal ganglionic axon collaterals terminate in the midbrain and hypothalamus.

Question 20

Indicate the characteristics associated with each part of the ear by using the answer code (options may be used more than once or not at all).
-is fluid-filled

Accepted Answer

A) external ear 
B) middle ear 
C) cochlea in the inner ear 
D) semicircular canal in the inner ear 
E) utricle and saccule in the inner ear 
A) external ear 
B) middle ear 
C) cochlea in the inner ear 
D) semicircular canal in the inner ear 
E) utricle and saccule in the inner ear

Which activities occur in the presence of light within the phototransduction pathway?

What is the conscious interpretation of external stimuli?

Match the following eye disorder with its description by using the following answer code (options may be used more than once or not at all). -corrected by cylindrical lens

Indicate the proper sequence of involvement in the visual pathway by writing the appropriate letter in the blank using the answer code. -fifth

The __________ is the layer of the eye that contains the photoreceptor cells.

What does NOT occur in a photoreceptor during exposure to light?

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

Which statement concerning fovea is correct?

Phasic receptors are rapidly adapting receptors.

When does natural analgesia occur?

What happens during accommodation for near vision?

Which statement concerning olfactory receptors is correct?

Glucose interacts with ________ receptor binding sites on the surface of the tongue.

Retinene is found in the rods but not the cones.

Each cone contains three different photopigments for selectively responding to red,blue,or green wavelengths of light.

Through lateral inhibition,a more intensely activated receptor pathway halts transmission of impulses in surrounding,less intensely stimulated pathways.

Which statement concerning polymodal nociceptors is correct?

Match the following eye disorder with its description by using the following answer code (options may be used more than once or not at all). -vitamin A deficiency

Which statement regarding vision is NOT correct?

Indicate the characteristics associated with each part of the ear by using the answer code (options may be used more than once or not at all). -is fluid-filled

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

Which activities occur in the presence of light within the phototransduction pathway?

What is the conscious interpretation of external stimuli?

Match the following eye disorder with its description by using the following answer code (options may be used more than once or not at all). -corrected by cylindrical lens

Indicate the proper sequence of involvement in the visual pathway by writing the appropriate letter in the blank using the answer code. -fifth

The __________ is the layer of the eye that contains the photoreceptor cells.

What does NOT occur in a photoreceptor during exposure to light?

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

Which statement concerning fovea is correct?

Phasic receptors are rapidly adapting receptors.

When does natural analgesia occur?

What happens during accommodation for near vision?

Which statement concerning olfactory receptors is correct?

Glucose interacts with ________ receptor binding sites on the surface of the tongue.

Retinene is found in the rods but not the cones.

Each cone contains three different photopigments for selectively responding to red,blue,or green wavelengths of light.

Through lateral inhibition,a more intensely activated receptor pathway halts transmission of impulses in surrounding,less intensely stimulated pathways.

Which statement concerning polymodal nociceptors is correct?

Match the following eye disorder with its description by using the following answer code (options may be used more than once or not at all). -vitamin A deficiency

Which statement regarding vision is NOT correct?

Indicate the characteristics associated with each part of the ear by using the answer code (options may be used more than once or not at all). -is fluid-filled

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