Question 1

Nerve fibers leave the eye at the ____________________,converging to form the ____________________ nerve.

Accepted Answer

optic disc,optic

Question 2

When a stimulus is continuous and the firing frequency of a nerve begins to slow,the sensation diminishes.This is known as ____________________.

Accepted Answer

adaptation

Question 3

Where are the structures for hearing found?

Accepted Answer

A)  Vestibule 
B)  Cochlea 
C)  Semicircular canals 
D)  Middle ear 
A)  Vestibule 
B)  Cochlea 
C)  Semicircular canals 
D)  Middle ear B

Question 4

Pain originating from a deep organ that is sensed as if it is originating from the body's surface is called ____________________ pain.

Accepted Answer

The answer of Pain originating from a deep organ that...

Question 5

What would happen if the canal of Schlemm becomes obstructed?

Accepted Answer

A)  The flow of aqueous humor from the posterior to the anterior cavity would cease,and pressure in the anterior cavity would drop. 
B)  The flow of aqueous humor out of the anterior chamber would cease,and pressure in the anterior chamber would rise. 
C)  The flow of aqueous humor out of the posterior chamber would cease,and pressure within the posterior chamber would drop. 
D)  The flow of aqueous humor into the anterior cavity would cease,and pressure in the anterior cavity would rise. 
A)  The flow of aqueous humor from the posterior to the anterior cavity would cease,and pressure in the anterior cavity would drop. 
B)  The flow of aqueous humor out of the anterior chamber would cease,and pressure in the anterior chamber would rise. 
C)  The flow of aqueous humor out of the posterior chamber would cease,and pressure within the posterior chamber would drop. 
D)  The flow of aqueous humor into the anterior cavity would cease,and pressure in the anterior cavity would rise.

Question 6

Which of the following cranial nerves are involved when you "roll your eyes"?

Accepted Answer

A)  Abducens 
B)  Trochlear,Oculomotor 
C)  Trochlear 
D)  Oculomotor,Abducens 
A)  Abducens 
B)  Trochlear,Oculomotor 
C)  Trochlear 
D)  Oculomotor,Abducens

Question 7

Most taste buds are located in protrusions of the tongue called ____________________.

Accepted Answer

The answer of Most taste buds are located in protrusions...

Question 8

A patient comes to the emergency department complaining of a dull,aching pain in his lower abdomen.He is experiencing pain carried on

Accepted Answer

A)  fast pain fibers. 
B)  slow pain fibers. 
C)  nociceptors. 
D)  the spinoreticular tract. 
A)  fast pain fibers. 
B)  slow pain fibers. 
C)  nociceptors. 
D)  the spinoreticular tract.

Question 9

Drugs used to relieve pain are called ____________________.

Accepted Answer

The answer of Drugs used to relieve pain are called...

Question 10

The curvature of the lens of the eye changes shape to allow the eye to focus on a near object; this is called

Accepted Answer

A)  refraction. 
B)  accommodation. 
C)  convergence. 
D)  emmetropia. 
A)  refraction. 
B)  accommodation. 
C)  convergence. 
D)  emmetropia.

Question 11

The process of bending light rays so they focus on the retina is called ____________________.

Accepted Answer

The answer of The process of bending light rays so...

Question 12

What triggers the process of the sense of smell?

Accepted Answer

A)  Odor molecules entering the nasal cavity bind to cilia projecting from the ends of olfactory receptor cells. 
B)  Chemicals in saliva trigger receptors for the olfactory nerve. 
C)  Odor molecules entering the nasal cavity excite the olfactory bulbs under the brain's frontal lobe. 
D)  Chemicals in saliva stimulate nerve fibers in the soft palate,which,in turn,synapse with neurons in the olfactory bulbs. 
A)  Odor molecules entering the nasal cavity bind to cilia projecting from the ends of olfactory receptor cells. 
B)  Chemicals in saliva trigger receptors for the olfactory nerve. 
C)  Odor molecules entering the nasal cavity excite the olfactory bulbs under the brain's frontal lobe. 
D)  Chemicals in saliva stimulate nerve fibers in the soft palate,which,in turn,synapse with neurons in the olfactory bulbs.

Question 13

Identify the proper path of the main pain pathway,beginning with the site of injury and ending at the point where the person becomes aware of pain.

Accepted Answer

A)  Injured tissues stimulate nociceptors; the pain signal then travels to the dorsal horn of the spinal cord,the spinothalamic tract relays pain signal to thalamus; the thalamus relays the pain signal to the postcentral gyrus 
B)  Injured tissues stimulate nociceptors; the pain signal travels to the dorsal horn of the spinal cord; the spinoreticular tract relays the pain signal to the thalamus; the thalamus relays the pain signal to the postcentral gyrus 
C)  Injured tissues stimulate nociceptors; the pain signal travels to the spinoreticular tract; the spinoreticular tract relays the pain signal to the hypothalamus and limbic system 
D)  Injured tissues stimulate the dorsal horn of the spinal cord; the spinothalamic tract stimulates the spinoreticular tract; the spinoreticular tract stimulates the thalamus; the thalamus relays a signal to the limbic system 
A)  Injured tissues stimulate nociceptors; the pain signal then travels to the dorsal horn of the spinal cord,the spinothalamic tract relays pain signal to thalamus; the thalamus relays the pain signal to the postcentral gyrus 
B)  Injured tissues stimulate nociceptors; the pain signal travels to the dorsal horn of the spinal cord; the spinoreticular tract relays the pain signal to the thalamus; the thalamus relays the pain signal to the postcentral gyrus 
C)  Injured tissues stimulate nociceptors; the pain signal travels to the spinoreticular tract; the spinoreticular tract relays the pain signal to the hypothalamus and limbic system 
D)  Injured tissues stimulate the dorsal horn of the spinal cord; the spinothalamic tract stimulates the spinoreticular tract; the spinoreticular tract stimulates the thalamus; the thalamus relays a signal to the limbic system

Question 14

Which of the following is a structure of the middle ear?

Accepted Answer

A)  Semicircular canal 
B)  Vestibule 
C)  Malleus 
D)  Cochlea 
A)  Semicircular canal 
B)  Vestibule 
C)  Malleus 
D)  Cochlea

Question 15

Which statement about sensory receptors is true?

Accepted Answer

A)  Each sensory receptor can respond to a variety of stimuli,such as cold,heat,or pain. 
B)  Sensory receptors are evenly distributed throughout the body. 
C)  The intensity of pain depends on the number of fibers stimulated. 
D)  The brain identifies the location of pain because each part of the body contains a different type of receptor. 
A)  Each sensory receptor can respond to a variety of stimuli,such as cold,heat,or pain. 
B)  Sensory receptors are evenly distributed throughout the body. 
C)  The intensity of pain depends on the number of fibers stimulated. 
D)  The brain identifies the location of pain because each part of the body contains a different type of receptor.

Question 16

Taste buds send gustatory impulses to the brain through which cranial nerves?

Accepted Answer

A)  Facial,glossopharyngeal,or vagus 
B)  Olfactory,facial,or vagus 
C)  Facial only 
D)  Glossopharyngeal only 
A)  Facial,glossopharyngeal,or vagus 
B)  Olfactory,facial,or vagus 
C)  Facial only 
D)  Glossopharyngeal only

Question 17

Which eye structure(s)secretes a thin mucous film to help keep the eyeball moist?

Accepted Answer

A)  Tarsal glands 
B)  Lacrimal puncta 
C)  Sclera 
D)  Conjunctiva 
A)  Tarsal glands 
B)  Lacrimal puncta 
C)  Sclera 
D)  Conjunctiva

Question 18

A patient comes to the hospital with a severe crush injury of the leg.He is complaining of severe pain.He also says he is feeling very nauseous and,after a few minutes,vomits.What is the best explanation for the nausea and vomiting?

Accepted Answer

A)  Chemicals released from tissues in the injured foot flooded the digestive system,producing nausea and vomiting. 
B)  Nociceptors from the lower limbs travel along a similar pathway as chemical receptors from the digestive tract,causing the body to confuse the location of the stimulus. 
C)  Pain signals traveling along the spinoreticular tract carried signals to the hypothalamus and limbic system,triggering nausea as a response to pain. 
D)  The spinothalamic tract relayed a signal to the thalamus and postcentral gyrus,which reacted to the pain by producing nausea. 
A)  Chemicals released from tissues in the injured foot flooded the digestive system,producing nausea and vomiting. 
B)  Nociceptors from the lower limbs travel along a similar pathway as chemical receptors from the digestive tract,causing the body to confuse the location of the stimulus. 
C)  Pain signals traveling along the spinoreticular tract carried signals to the hypothalamus and limbic system,triggering nausea as a response to pain. 
D)  The spinothalamic tract relayed a signal to the thalamus and postcentral gyrus,which reacted to the pain by producing nausea.

Question 19

In the process of hearing,which action directly stimulates nerve impulses along the cochlear nerve?

Accepted Answer

A)  The vibration of the stapes against the oval window 
B)  Sound waves striking the tympanic membrane 
C)  Ripples in the perilymph striking the round window 
D)  Ripples in the perilymph over the hairs of the organ of Corti 
A)  The vibration of the stapes against the oval window 
B)  Sound waves striking the tympanic membrane 
C)  Ripples in the perilymph striking the round window 
D)  Ripples in the perilymph over the hairs of the organ of Corti

Question 20

Which two structures play a key role in the process of balance?

Accepted Answer

A)  Cochlea and vestibule 
B)  Vestibule and malleus 
C)  Cochlea and semicircular canals 
D)  Vestibule and semicircular canals 
A)  Cochlea and vestibule 
B)  Vestibule and malleus 
C)  Cochlea and semicircular canals 
D)  Vestibule and semicircular canals

Exam 11: Sense Organs

Nerve fibers leave the eye at the ____________________,converging to form the ____________________ nerve.

When a stimulus is continuous and the firing frequency of a nerve begins to slow,the sensation diminishes.This is known as ____________________.

Where are the structures for hearing found?

Pain originating from a deep organ that is sensed as if it is originating from the body's surface is called ____________________ pain.

What would happen if the canal of Schlemm becomes obstructed?

Which of the following cranial nerves are involved when you "roll your eyes"?

Most taste buds are located in protrusions of the tongue called ____________________.

A patient comes to the emergency department complaining of a dull,aching pain in his lower abdomen.He is experiencing pain carried on

Drugs used to relieve pain are called ____________________.

The curvature of the lens of the eye changes shape to allow the eye to focus on a near object; this is called

The process of bending light rays so they focus on the retina is called ____________________.

What triggers the process of the sense of smell?

Identify the proper path of the main pain pathway,beginning with the site of injury and ending at the point where the person becomes aware of pain.

Which of the following is a structure of the middle ear?

Which statement about sensory receptors is true?

Taste buds send gustatory impulses to the brain through which cranial nerves?

Which eye structure(s)secretes a thin mucous film to help keep the eyeball moist?

A patient comes to the hospital with a severe crush injury of the leg.He is complaining of severe pain.He also says he is feeling very nauseous and,after a few minutes,vomits.What is the best explanation for the nausea and vomiting?

In the process of hearing,which action directly stimulates nerve impulses along the cochlear nerve?

Which two structures play a key role in the process of balance?

Orientation to the Human Body

Chemistry of Life

Cells

Tissues

Integumentary System

Bones Bone Tissue

Skeletal System

Joints

Muscular System

Nervous System

Endocrine System

Blood

Heart

Vascular System

Lymphatic Immune Systems

Respiratory System

Urinary System

Fluid,electrolyte Acid-Base Balance

Digestive System

Nutrition Metabolism

Human Microbiome

Reproductive Systems

Pregnancy Human Development

Heredity

Filters

Nerve fibers leave the eye at the ,converging to form the nerve.