NSG 3160 EXAM 2 QUESTIONS
AND ANSWERS 2026 - 2027
The extraocular muscles consist of four straight or ________ muscles
and two slanting or ______ muscles.
a. rectilinear; diagonal
b. rectus; oblique
c. palpebral; conjugate
d. superior; inferior - ANSWERS-b. rectus; oblique
The four straight, or rectus, muscles are the superior, inferior, lateral,
and medial rectus muscles. The two slanting, or oblique, muscles are
the superior and inferior muscles.
A slight protrusion of the eyeballs may be noticed when examining
individuals who come from which ethnic/cultural group?
a. Hispanic
b. American Indian
c. African American
d. Asian - ANSWERS-c. African American
,African Americans normally may have a slight protrusion of the
eyeball beyond the supraorbital ridge.
The location in the brain where optic nerve fibers from the temporal
fields of vision cross over is identified as the
a. fovea centralis.
b. choroid.
c. optic chiasm.
d. optic disc. - ANSWERS-c. optic chiasm.
At the optic chiasm, nasal fibers (from both temporal visual fields)
cross over. The fovea centralis is the area of the retina that has the
sharpest and keenest vision. The optic disc is the area in which fibers
from the retina converge to form the optic nerve. The choroid is the
middle vascular layer of the eye; the choroid has dark pigmentation to
prevent light from reflecting internally and is heavily vascularized to
deliver blood to the retina.
Which of the following groups of individuals need to be tested for the
presence of color blindness (deficiency)?
a. White girls between the ages of 4 and 8 years
b. White boys between the ages of 4 and 8 years
c. Asian girls between the ages of 3 and 6 years
,d. Black boys between the ages of 10 and 15 years - ANSWERS-b.
White boys between the ages of 4 and 8 years
Color blindness is an inherited recessive X-linked trait affecting about
8% of white boys and 4% of black boys. Test only boys for color
vision once between the ages of 4 and 8 years.
Which of the following statements regarding the results obtained from
use of the Snellen chart is true?
a. The smaller the denominator, the poorer the vision.
b. The smaller the numerator, the poorer the vision.
c. The larger the denominator, the poorer the vision.
d. The larger the numerator, the better the vision. - ANSWERS-c. The
larger the denominator, the poorer the vision.
Using the Snellen chart, the larger the denominator, the poorer the
vision.
The lens of the eye functions as a
a. mediator of light.
b. sensory facilitator.
c. refracting medium.
d. controller of intraocular pressure. - ANSWERS-c. refracting
medium.
, The lens serves as a refracting medium, keeping a viewed object in
continual focus on the retina. The muscle fibers of the iris function as
the mediator of light. The cornea is very sensitive to touch. The
intraocular pressure is determined by a balance between the amount
of aqueous humor produced and resistance to its outflow at the angle
of the anterior chamber.
The normal color of the optic disc is
a. red.
b. creamy yellow-orange to pink.
c. creamy pink.
d. creamy red to yellow-orange. - ANSWERS-b. creamy yellow-
orange to pink.
The color of a normal optic disc ranges from creamy yellow-orange to
pink.
Which of the following is an expected response on the cover test?
a. The uncovered eye is unable to maintain its gaze on a fixed object.
b. The covered eye jumps to reestablish fixation when it is uncovered.
c. The covered eye moves into a relaxed position.
AND ANSWERS 2026 - 2027
The extraocular muscles consist of four straight or ________ muscles
and two slanting or ______ muscles.
a. rectilinear; diagonal
b. rectus; oblique
c. palpebral; conjugate
d. superior; inferior - ANSWERS-b. rectus; oblique
The four straight, or rectus, muscles are the superior, inferior, lateral,
and medial rectus muscles. The two slanting, or oblique, muscles are
the superior and inferior muscles.
A slight protrusion of the eyeballs may be noticed when examining
individuals who come from which ethnic/cultural group?
a. Hispanic
b. American Indian
c. African American
d. Asian - ANSWERS-c. African American
,African Americans normally may have a slight protrusion of the
eyeball beyond the supraorbital ridge.
The location in the brain where optic nerve fibers from the temporal
fields of vision cross over is identified as the
a. fovea centralis.
b. choroid.
c. optic chiasm.
d. optic disc. - ANSWERS-c. optic chiasm.
At the optic chiasm, nasal fibers (from both temporal visual fields)
cross over. The fovea centralis is the area of the retina that has the
sharpest and keenest vision. The optic disc is the area in which fibers
from the retina converge to form the optic nerve. The choroid is the
middle vascular layer of the eye; the choroid has dark pigmentation to
prevent light from reflecting internally and is heavily vascularized to
deliver blood to the retina.
Which of the following groups of individuals need to be tested for the
presence of color blindness (deficiency)?
a. White girls between the ages of 4 and 8 years
b. White boys between the ages of 4 and 8 years
c. Asian girls between the ages of 3 and 6 years
,d. Black boys between the ages of 10 and 15 years - ANSWERS-b.
White boys between the ages of 4 and 8 years
Color blindness is an inherited recessive X-linked trait affecting about
8% of white boys and 4% of black boys. Test only boys for color
vision once between the ages of 4 and 8 years.
Which of the following statements regarding the results obtained from
use of the Snellen chart is true?
a. The smaller the denominator, the poorer the vision.
b. The smaller the numerator, the poorer the vision.
c. The larger the denominator, the poorer the vision.
d. The larger the numerator, the better the vision. - ANSWERS-c. The
larger the denominator, the poorer the vision.
Using the Snellen chart, the larger the denominator, the poorer the
vision.
The lens of the eye functions as a
a. mediator of light.
b. sensory facilitator.
c. refracting medium.
d. controller of intraocular pressure. - ANSWERS-c. refracting
medium.
, The lens serves as a refracting medium, keeping a viewed object in
continual focus on the retina. The muscle fibers of the iris function as
the mediator of light. The cornea is very sensitive to touch. The
intraocular pressure is determined by a balance between the amount
of aqueous humor produced and resistance to its outflow at the angle
of the anterior chamber.
The normal color of the optic disc is
a. red.
b. creamy yellow-orange to pink.
c. creamy pink.
d. creamy red to yellow-orange. - ANSWERS-b. creamy yellow-
orange to pink.
The color of a normal optic disc ranges from creamy yellow-orange to
pink.
Which of the following is an expected response on the cover test?
a. The uncovered eye is unable to maintain its gaze on a fixed object.
b. The covered eye jumps to reestablish fixation when it is uncovered.
c. The covered eye moves into a relaxed position.
