Cow Eye Dissection and Parts of the Eye
This flashcard set explains the structure and function of key eye components, including the iris, pupil, lens, retina, and ligaments. It helps learners understand how these parts work together to control light entry and focus images for vision.
iris
A ring of muscle tissue that forms the colored portion of the eye; controls the size of the pupil opening.
Key Terms
iris
A ring of muscle tissue that forms the colored portion of the eye; controls the size of the pupil opening.
retina
Located in the back of the eye, contains the rods and cones.
pupil
The opening in the center of the iris through which light enters the eye
lens
The transparent structure behind the pupil that changes shape to help focus images on the retina.
ligaments (eye)
Fibers that connect ciliary muscles to the lens in the eye
blind spot (optic disc)
Location of the retina where there are no rods or cones.
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| Term | Definition |
|---|---|
iris | A ring of muscle tissue that forms the colored portion of the eye; controls the size of the pupil opening. |
retina | Located in the back of the eye, contains the rods and cones. |
pupil | The opening in the center of the iris through which light enters the eye |
lens | The transparent structure behind the pupil that changes shape to help focus images on the retina. |
ligaments (eye) | Fibers that connect ciliary muscles to the lens in the eye |
blind spot (optic disc) | Location of the retina where there are no rods or cones. |
optic nerve | Transmits visual information from the retina to the brain. |
tapetum | Give animals night vision; a reflective layer in the eyes of many animals causing them to shine in the dark. |
cornea | Clear, outer layer of the front of the eye. |
sclera | White, outermost layer of the eye. Helps maintain shape and gives attachment to muscles. |
photoreceptors | The cells in the retina that respond to light (rods and cones) |
rods | Photoreceptor cells in the eye that detect black, white, and gray |
cones | Photoreceptor cells in the eye that detect color |
aqueous humor | Fluid in front chamber of eye; nourishes the cornea and the lens. |
vitreous humor | The clear gel filling the space of the eyeball between the lens and the retina |
macula | Area with a high concentration of light-sensitive cone cells tha allow us to see color and fine details clearly |
choroid | Middle layer containing major blood vessels to nourish the eye |
retina | |
blind spot (optic disc) | |
optic nerve | |
sclera | |
vitreous humor | |
lens | |
iris | |
aqueous humor | |
pupil | |
cornea | |
ciliary muscles | |
sight | Sense through which a person or animal becomes aware of light, color, etc., by using the eyes |
brain | Electrical signals travel through the optic nerve and make their way to the: |