Eyes Anatomy, Health, Function, Facts, Worksheets & Information ... - Free Printable

The task is to label the parts of the human eye in the provided diagram using the given terms. Below is the solution with explanations for each part:

Diagram Labels and Explanations:

1. Cornea
- Location: The transparent, dome-shaped front part of the eye.
- Function: Allows light to enter the eye and helps focus it.

2. Iris
- Location: The colored part of the eye surrounding the pupil.
- Function: Controls the size of the pupil to regulate the amount of light entering the eye.

3. Pupil
- Location: The black circular opening in the center of the iris.
- Function: Adjusts in size to control the amount of light entering the eye.

4. Lens
- Location: Behind the iris and pupil.
- Function: Helps focus light onto the retina by changing shape (accommodation).

5. Ciliary Body
- Location: Attached to the lens via suspensory ligaments.
- Function: Contains muscles that control the shape of the lens for focusing.

6. Suspensory Ligament
- Location: Connects the ciliary body to the lens.
- Function: Holds the lens in place and allows it to change shape.

7. Aqueous Humor
- Location: Fluid between the cornea and the lens.
- Function: Maintains intraocular pressure and provides nutrients to the cornea and lens.

8. Vitreous Humor
- Location: Gel-like substance filling the main cavity of the eye behind the lens.
- Function: Maintains the shape of the eye and allows light to pass through to the retina.

9. Retina
- Location: The inner lining at the back of the eye.
- Function: Contains photoreceptor cells (rods and cones) that convert light into electrical signals.

10. Fovea
- Location: A small depression in the center of the retina.
- Function: Contains a high concentration of cones for sharp, detailed central vision.

11. Optic Disk
- Location: The point where the optic nerve leaves the retina.
- Function: Contains no photoreceptors and is also known as the "blind spot."

12. Choroid
- Location: Layer between the sclera (outer layer) and the retina.
- Function: Provides blood supply to the retina and absorbs excess light to reduce glare.

13. Sclera
- Location: The white outer layer of the eye.
- Function: Protects the internal structures of the eye and maintains its shape.

14. Optic Nerve
- Location: Extends from the back of the eye.
- Function: Carries visual information from the retina to the brain for processing.

15. Central Artery
- Location: Branches off near the optic disk.
- Function: Supplies blood to the retina.

Final Labeled Diagram:

- Top right: Vitreous Humor
- Right side, top: Lens
- Right side, middle: Retina
- Right side, bottom: Optic Disk
- Bottom right: Optic Nerve
- Bottom left: Sclera
- Left side, top: Cornea
- Left side, middle: Iris
- Left side, bottom: Pupil
- Middle, left: Aqueous Humor
- Middle, right: Choroid
- Middle, bottom: Ciliary Body
- Bottom, middle: Suspensory Ligament
- Bottom, far left: Central Artery
- Bottom, far right: Fovea

Explanation of the Solution:

Each part of the eye has a specific function and location. By understanding these functions and locations, we can accurately match the labels to the corresponding parts in the diagram. For example:
- The cornea is the clear, front part of the eye.
- The iris is the colored part surrounding the pupil.
- The retina is at the back of the eye, containing photoreceptor cells.
- The optic nerve carries visual information to the brain.

This labeling exercise helps reinforce the anatomy and function of the human eye.

Final Answer:
\boxed{
\text{See the labeled diagram above.}
}