Match each structure of the eye with its corresponding description.
-Innermost layer of the eyeball
A)Aqueous humor
B)Choroid
C)Cones
D)Cornea
E)Fovea centralis
F)Iris
G)Optic disk
H)Retina
I)Rods
J)Vitreous humor

Question

Quizplus · Accepted Answer

The innermost layer of the eyeball is the retina, which contains the photoreceptor cells (rods and cones) that detect light and send signals to the brain for interpretation.

Answer: A
 Aqueous humor is the clear fluid that fills the front chamber of the eye, helping to maintain the shape of the eyeball and provide nutrients to the cornea and lens.

Answer: B
 The choroid is a layer of blood vessels and connective tissue that supplies oxygen and nutrients to the retina, located between the sclera (white outer layer of the eye) and the retina.

Answer: D
 The cornea is the clear, dome-shaped outer layer of the eye that helps to refract (bend) incoming light and focus it onto the lens.

Answer: E
 The fovea centralis is a small, central area of the retina that contains a high concentration of cones and is responsible for sharp, detailed vision.

Answer: F
 The iris is the colored part of the eye that surrounds the pupil, and helps to regulate the amount of light that enters the eye by adjusting the size of the pupil.

Answer: G
 The optic disk (also called the optic nerve head) is the spot where the optic nerve leaves the eye and transmits visual information to the brain. There are no photoreceptor cells in this area, leading to a “blind spot” in our visual field.

Answer: J
 Vitreous humor is a clear, gel-like substance that fills the posterior chamber of the eye, providing support to the retina and helping to maintain its shape.

Answer: C
 Cones are photoreceptor cells in the retina that are responsible for color vision and detecting detail, especially in bright light.

Answer: I
 Rods are photoreceptor cells in the retina that are responsible for detecting light and dark, and are more sensitive in low-light conditions.

Match Each Structure of the Eye with Its Corresponding Description