Lab: Intro of the eye

Electromagnetic Radiation

A type of energy that includes visible light, sound waves, and other forms of waves.

Frequency

The number of waves that pass a point in a given period of time, which determines the color of the light.

Amplitude

The height of a wave, which relates to the brightness of the color.

Lacrimal Fluid

A fluid that prevents eye irritation and contributes to tears.

Medial

Situated toward the midline of the body.

Lateral

Situated away from the midline of the body.

Iris

The colored part of the eye that controls the size of the pupil.

Pupil

The opening in the center of the iris that allows light to enter the eye.

Cornea

The transparent front part of the eye covering the pupil and iris.

Sclera

The white outer layer of the eyeball.

Retina

The innermost layer of the eye that contains photoreceptors.

Vitreous Humor

The clear gel that fills the space between the lens and the retina of the eyeball.

Optic Nerve

The nerve that transmits visual information from the retina to the brain.

Photoreceptors

Cells in the retina that respond to light and convert it into electrical signals.

Rods

Photoreceptors responsible for vision in low-light conditions.

Cones

Photoreceptors responsible for color vision and visual acuity.

Bipolar Cells

Interneurons in the retina that transmit signals from the photoreceptors to the ganglion cells.

Ganglion Cells

Neurons in the retina that receive input from bipolar cells and transmit the signals to the brain.

Optic Disc

The point in the retina where the optic nerve exits, creating a blind spot.

Superior Rectus Muscle

The muscle that elevates the eye.

Inferior Rectus Muscle

The muscle that depresses the eye.

Superior Oblique Muscle

The muscle that contributes to the rotational movement of the eye.

Inferior Oblique Muscle

The muscle that allows the eye to move up and outward.