NBEO Part 1 Ocular Anatomy Ant Seg Exam
Questions and Answers with Verified
Solutions | Latest Updated 2026
__________ is an abnormally Telecanthus
increased
distance between the medial
canthi
of the eyelids.
____________ is whitening of the Poliosis
eyelashes.
____________ is a loss of Madarosis
eyelashes.
_____________ is a turning Trichiasis
inward of
eyelashes, often secondary to
entroprion.
What makes the skin layer of the B and D
eyelid unique compared to the rest
of the body? (Choose 2)
A) It is the thickest layer in the
body
B) It is the thinnest in the body
C) It contains no protein
D) It contains no fat
,What cranial nerve is responsible CN 7
for
innervating the orbicularis oculi?
Which portion of the orbicularis Orbital portion
oculi is responsible for forced
closure of the eyelids?
Which portion of the orbicularis Palpebral portion
oculi is responsible for
spontaneous
and reflex blinking?
The Muscle of Riolan is also often pars ciliaris
referred to as the
______________.
What muscle is the most Muscle of Riolan
superficial
portion of the orbicularis oculi?
The __________ is the most gray line
anterior
portion of the muscle of Riolan
which divides the lid into anterior
and posterior portions.
, Is the gray line of the muscle of anterior
Riolan located on the most
anterior
or posterior portion of the muscle
of
Riolan?
Which portion of the orbicularis Muscle of Riolan
oculi is responsible for keeping the
lid margin tightly applied to the
globe during eye movements?
Paralysis of the orbicularis oculi ectropion
will
cause the lower eyelid to droop
away from the globe resulting in
______________.
The Muscle of Horner is also pars lacrimalis
referred to as the
_________________.
What are the two main muscles Muscle of Riolan and Muscle of Horner
that
make up the palpebral portion of
the
orbicularis oculi?
Questions and Answers with Verified
Solutions | Latest Updated 2026
__________ is an abnormally Telecanthus
increased
distance between the medial
canthi
of the eyelids.
____________ is whitening of the Poliosis
eyelashes.
____________ is a loss of Madarosis
eyelashes.
_____________ is a turning Trichiasis
inward of
eyelashes, often secondary to
entroprion.
What makes the skin layer of the B and D
eyelid unique compared to the rest
of the body? (Choose 2)
A) It is the thickest layer in the
body
B) It is the thinnest in the body
C) It contains no protein
D) It contains no fat
,What cranial nerve is responsible CN 7
for
innervating the orbicularis oculi?
Which portion of the orbicularis Orbital portion
oculi is responsible for forced
closure of the eyelids?
Which portion of the orbicularis Palpebral portion
oculi is responsible for
spontaneous
and reflex blinking?
The Muscle of Riolan is also often pars ciliaris
referred to as the
______________.
What muscle is the most Muscle of Riolan
superficial
portion of the orbicularis oculi?
The __________ is the most gray line
anterior
portion of the muscle of Riolan
which divides the lid into anterior
and posterior portions.
, Is the gray line of the muscle of anterior
Riolan located on the most
anterior
or posterior portion of the muscle
of
Riolan?
Which portion of the orbicularis Muscle of Riolan
oculi is responsible for keeping the
lid margin tightly applied to the
globe during eye movements?
Paralysis of the orbicularis oculi ectropion
will
cause the lower eyelid to droop
away from the globe resulting in
______________.
The Muscle of Horner is also pars lacrimalis
referred to as the
_________________.
What are the two main muscles Muscle of Riolan and Muscle of Horner
that
make up the palpebral portion of
the
orbicularis oculi?
