Question 1

The iris

Accepted Answer

A)   surrounds an opening called the pupil.
B)   is the colored portion of the eye.
C)   controls the diameter of the pupil.
D)   is stimulated to contract by parasympathetic stimulation.
E)   has all of these properties.F) B) and C)
G) All of the above

Question 2

-Another name for pain receptors is

Accepted Answer

A)   tactile corpuscles.
B)   lamellated corpuscles.
C)   nociceptors.
D)   mechanoreceptors.
E)   agonists.F) B) and C)
G) A) and D)

Question 3

Light rays

Accepted Answer

A)   striking the retina cause action potentials to be relayed to the brain.
B)   are refracted by the cornea, lens, and humors.
C)   are refracted as they pass through a convex lens.
D)   that are converging, reach a crossing point called the focal point.
E)   have all of these characteristics.F) B) and E)
G) C) and E)

Question 4

Which of the following statements is FALSE?

Accepted Answer

A)   Depth perception occurs where the two visual fields of the eyes overlap.
B)   One common cause of double vision is a misalignment of the eyes due to a weakening of the extrinsic eye muscles.
C)   Depth perception requires monocular vision.
D)   The image seen by each eye is called the visual field of that eye.E) A) and C)
F) None of the above

Question 5

The gelatinous mass inside of the eye is called the:

Accepted Answer

A)   lacrimal secretion.
B)   mucoid body.
C)   vitreous humor.
D)   hyaloid mass.
E)   scleroid humor.F) B) and C)
G) C) and D)

Question 6

In the cochlea, the space that extends from the oval window to the apex of the cochlear spiral is the:

Accepted Answer

A)   cochlear duct.
B)   scala vestibuli.
C)   scala tympani.
D)   spiral lamina.
E)   tectorial membrane.F) A) and D)
G) C) and D)

Question 7

___________ detect light touch and superficial pressure and are found in the epidermis.

Accepted Answer

A)   Meissner's corpuscles
B)   Pacinian corpuscles
C)   Merkel's disks
D)   Ruffini corpuscles
E)   Free nerve endingsF) A) and D)
G) B) and D)

Question 8

Which of the following is NOT one of the four primary taste sensations?

Accepted Answer

A)   bitter
B)   salty
C)   sour
D)   spicy
E)   sweetF) B) and E)
G) D) and E)

Question 9

During training for night combat, soldiers are trained to look slightly to one side of objects they detect. This is because

Accepted Answer

A)   looking directly at an object places the image on the fovea centralis.
B)   looking directly at an object places the image on the optic disk.
C)   color vision is better if you look slightly to one side of an object.
D)   the fovea has very few rod cells, which are necessary for vision in dim light.
E)   of both looking directly at an object places the image on the fovea centralis and the fovea has very few rod cells, which are necessary for vision in dim light.F) D) and E)
G) A) and B)

Question 10

To focus on objects closer than 20 feet,

Accepted Answer

A)   the lens must become flatter.
B)   the ciliary muscles must contract.
C)   the suspensory ligaments must increase tension on the lens.
D)   the cornea must move inward.
E)   All of these are correct.F) A) and C)
G) C) and E)

Question 11

Which of these statements about taste is NOT true?

Accepted Answer

A)   Taste buds are oval structures located on the surface of certain papillae on the tongue.
B)   Each taste bud has about 40 taste cells
C)   Taste cells contain hair-like processes called taste hairs.
D)   Many taste sensations are strongly influenced by olfactory sensations.
E)   Taste buds are only able to detect one taste sensation.F) B) and E)
G) A) and B)

Question 12

You are walking down the street when a strange dog begins to chase you. You manage to duck into a store and notice in a nearby hanging mirror that your pupils are very dilated. Which of the following most likely accounts for this?

Accepted Answer

A)   The parasympathetic nervous system was stimulated by the scare and it, in turn, stimulated the circular smooth muscles of the iris to contract.
B)   The parasympathetic nervous system was stimulated by the scare and it, in turn, stimulated the radial smooth muscles of the iris to contract.
C)   The sympathetic nervous system was stimulated by the scare and it, in turn, stimulated the radial smooth muscles of the iris to contract.
D)   The sympathetic nervous system was stimulated by the scare and it, in turn, stimulated the circular smooth muscles of the iris to contract.E) All of the above
F) A) and B)

Question 13

The ability to see many different color variations results from:

Accepted Answer

A)   stimulation of combinations of the three types of rods.
B)   stimulation of combinations of the three types of cones.
C)   retinal detachment.
D)   the sensitivity of rods to photons of light.
E)   the different varieties of retinal in each cone type.F) D) and E)
G) A) and E)

Question 14

____________ respond to fine, discriminative touch and are found just deep to the epidermis.

Accepted Answer

A)   Meissner's corpuscles
B)   Pacinian corpuscles
C)   Merkel's disks
D)   Ruffini corpuscles
E)   Free nerve endingsF) A) and B)
G) D) and E)

Question 15

The sensory retina

Accepted Answer

A)   is the outer portion of the retina.
B)   contains pigment.
C)   keeps light from being reflected back into the eye.
D)   contains rod and cone cells.
E)   has all of these characteristics.F) D) and E)
G) A) and D)

Question 16

A person with cataracts was treated by surgically removing the lenses of his eyes. The type of glasses he should get to compensate for the removal of his lenses would be

Accepted Answer

A)   concave lenses.
B)   convex lenses.
C)   glasses to compensate for astigmatism.D) All of the above
E) B) and C)

Question 17

The spot where a number of blood vessels enter the eye, and where the optic nerve exits the eye, is called

Accepted Answer

A)   the macula.
B)   the fovea centralis.
C)   the blind spot.
D)   the optic disk.
E)   Both the blind spot and the optic disk are correct names.F) A) and E)
G) None of the above

Question 18

The choroid of the eye

Accepted Answer

A)   is part of the fibrous tunic.
B)   appears white in color.
C)   anteriorly, is continuous with the sclera.
D)   consists of a vascular network and large numbers of melanin-containing cells.
E)   is part of the nervous tunic.F) A) and E)
G) All of the above

Question 19

The lens focuses light on the photoreceptor cells by ______________; this movement is accomplished by the _____________.

Accepted Answer

A)   moving up and down, suspensatory ligaments
B)   changing shape from spherical to flat, suspensatory ligaments & ciliary body
C)   opening and closing, iris diaphragm
D)   moving up and down, papillary constrictor muscles
E)   moving towards the cornea, macula and foveaF) All of the above
G) A) and E)

Question 20

Which of the following is a FALSE statement about the eye and vision?

Accepted Answer

A)   Light absorption in the eye requires the presence of photopigments such as rhodopsin.
B)   The fovea contains mostly cones and is your area of sharpest vision.
C)   Rods only detect the presence of light while cones detect the specific wavelength of light.
D)   The human eye changes the focal distance to focus exactly like a camera focuses.
E)   When viewing distant objects, your lens becomes more flat.F) A) and B)
G) A) and C)

Exam 9: Senses

Which of the following is a FALSE statement about the eye and vision?

Correct AnswerverifiedShow Answer

To focus on objects closer than 20 feet,

Correct AnswerverifiedShow Answer

The iris

Correct AnswerverifiedShow Answer

-Another name for pain receptors is

Correct AnswerverifiedShow Answer

Light rays

Correct AnswerverifiedShow Answer

___________ detect light touch and superficial pressure and are found in the epidermis.

Correct AnswerverifiedShow Answer

The sensory retina

Correct AnswerverifiedShow Answer

In the cochlea, the space that extends from the oval window to the apex of the cochlear spiral is the:

Correct AnswerverifiedShow Answer

The spot where a number of blood vessels enter the eye, and where the optic nerve exits the eye, is called

Correct AnswerverifiedShow Answer

A person with cataracts was treated by surgically removing the lenses of his eyes. The type of glasses he should get to compensate for the removal of his lenses would be

Correct AnswerverifiedShow Answer

Which of the following statements is FALSE?

Correct AnswerverifiedShow Answer

The ability to see many different color variations results from:

Correct AnswerverifiedShow Answer

Which of the following is NOT one of the four primary taste sensations?

Correct AnswerverifiedShow Answer

____________ respond to fine, discriminative touch and are found just deep to the epidermis.

Correct AnswerverifiedShow Answer

During training for night combat, soldiers are trained to look slightly to one side of objects they detect. This is because

Correct AnswerverifiedShow Answer

The gelatinous mass inside of the eye is called the:

Correct AnswerverifiedShow Answer

The choroid of the eye

Correct AnswerverifiedShow Answer

The lens focuses light on the photoreceptor cells by ______________; this movement is accomplished by the _____________.

Correct AnswerverifiedShow Answer

Which of these statements about taste is NOT true?

Correct AnswerverifiedShow Answer

You are walking down the street when a strange dog begins to chase you. You manage to duck into a store and notice in a nearby hanging mirror that your pupils are very dilated. Which of the following most likely accounts for this?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The lens focuses light on the photoreceptor cells by __; this movement is accomplished by the _.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified