Which of the following is a receptor in the retina that is responsible for light and color?
- Cone
- Rod
- Pupil
- Lens
The cone is a receptor in the retina that is responsible for light and color.
Anatomical Site: A specific location or part of the human body.
What does the abbreviation PERRLA stand for?
- Pupils equal, round, reactive to light and accommodation
- Pupils even, round, reactive to light and accommodation
- Pupils equal, round, responsive to light and accommodation
- Pupils even, round, responsive to light and accommodation
The abbreviation PERRLA stands for pupils equal, round, reactive to light and accommodation.
What is the correct abbreviation for each eye?
- OD
- OS
- OU
- ACC
OU is the abbreviation for each eye.
Obstetrics: A health care specialty focusing on the care of women during pregnancy and the puerperium.
What is the correct abbreviation for left eye?
- OD
- OS
- OU
- ACC
OS is the abbreviation for left eye.
What is the correct abbreviation for right eye?
- OD
- OS
- OU
- ACC
OD is the abbreviation for right eye.
Other Specified: Additional information that the physician specified and isn’t included in any other code description.
Which of the following is not a gland in the eyelids?
- Glands of Zeis
- Bulbar conjunctiva
- Moll's glands
- Meibomian glands
The bulbar conjunctiva is not a gland. It is a mucous membrane on the surface of the eyeball.
Anatomical Site: A specific location or part of the human body.
Which of the following are portions of the interior of the eye?
- Eyeball
- Optic nerves
- Extraocular muscles
- All of these
The eyeball, optic nerves, and extraocular muscles are all part of the interior of the eye.
Other Specified: Additional information that the physician specified and isn’t included in any other code description.
What is another name for the eyelids?
- Levator
- Palpebrae
- Superioris
- Bulbar
Another name for the eyelids is the palpebrae.
Anatomical Site: A specific location or part of the human body.
What is the outer protective layer of the eyeball known as?
- Cornea
- Iris
- Pupil
- Sclera
The outer protective layer of the eyeball is known as the sclera.
Which of these is the curved, multilayer, transparent portion of the eye?
- Cornea
- Iris
- Pupil
- Sclera
The curved, multilayer, transparent portion of the eye is called the cornea.
How many layers make up the cornea?
- 4
- 5
- 6
- 7
There are five layers that make up the cornea: epithelium, Bowman's membrane, stroma, Descemet's membrane, and endothelium.
What is the function of the cornea?
- To refract light rays
- To connect to the optic nerve
- To process light and color
- To adjust for varying focal distances
The cornea is responsible for refracting light rays.
Which of the following is not in the middle layer of the eye?
- Ciliary body
- Choroid
- Cornea
- Iris
The middle layer of the eye includes the iris, ciliary body, and choroid.
Which of the following is the colored part of the eye?
- Ciliary body
- Choroid
- Cornea
- Iris
The iris is the colored part of the eye.
Anomaly: Abnormal, or unexpected, condition.
Which of the following extraocular muscles pulls the eye laterally?
- Inferior rectus muscle
- Superior rectus muscle
- Medial rectus muscle
- Lateral rectus muscle
The lateral rectus muscle pulls the eye laterally.
Which of the following is the area of the eye that contains nerve endings?
- Retina
- Rod
- Pupil
- Iris
The retina is the area of the eye that contains nerve endings and is responsible for receiving visual images and forwarding these to the brain for analysis.
Which of the following is photosensitive in low light?
- Retina
- Rod
- Pupil
- Iris
The rods are photosensitive in low light.
Anomaly: Abnormal, or unexpected, condition.
Which of the following is also known as the posterior chamber of the eye?
- Anterior chamber
- Extraocular muscles
- Trochlea
- Vitreous chamber
The vitreous chamber of the eye is also called the posterior chamber.
Which of the following is the black part of the eye?
- Retina
- Rod
- Pupil
- Iris
The pupil is the black part of the eye.