What are the structures of the eye quizlet?

Terms in this set (13)

• Sclera. The white of the eye.
• Cornea. The anterior most portion of the sclera.
• Conjunctiva. A mucous membrane that overlies the anterior surface of the eye and serves to protect the cornea from mechanical damage.
• Optic nerve.
• Ciliary body.
• Lens.
• Suspensory ligaments.
• Iris.

What are the structures of the eye and their functions quizlet?

Terms in this set (15)

• Cornea. The outermost lens of the eye that focuses light into the inner eye and protects it from harmful matter.
• Retina. The light sensitive layer within the eye that converts images into electrical signals.
• Pupil.
• Iris.
• Ciliary Body (muscle)
• Lens.
• Optic Nerve.
• Sclera.

What is the eye structure?

The eye is made up of three coats, which enclose the optically clear aqueous humour, lens, and vitreous body. The outermost coat consists of the cornea and the sclera; the middle coat contains the main blood supply to the eye and consists, from the back forward, of the choroid, the ciliary body, and the iris.

What is the main function of the eye quizlet?

It is a layer of light sensitive tissue that converts visual images into neural impulses to be transmitted to the brain to be interpreted.

Which structure in the eye is pigmented quizlet?

The choroid is part of the middle vascular layer of the eye. It is highly vascular, pigmented membrane covering the posterior five-sixths of the eye. Blood vessels of the choroid nourish the eye, and its pigments absorb light.

What structure in the eye focuses the image onto the retina quizlet?

The iris is the circular, colored curtain of the eye. Its opening forms the pupil. The iris helps regulate the amount of light that enters the eye. The transparent structure inside the eye that focuses light rays onto the retina.

What is the function of the retina in the eye quizlet?

What is the function of the retina? The retina receives light focused from the lens, converts the light into neural signals, and sends these signals on to the brain.

What is a fovea in the eye?

The fovea centralis, or fovea, is a small depression within the neurosensory retina where visual acuity is the highest. The fovea itself is the central portion of the macula, which is responsible for central vision.[1][2][3][4]

Which structure maintains the shape of the eye?

The eye’s outer layer is made of dense connective tissue, which protects the eyeball and maintains its shape. It is also known as the fibrous tunic. The fibrous tunic is composed of the sclera and the cornea. The sclera covers nearly the entire surface of the eyeball.

What structure in the eye is responsible for focus quizlet?

The lens is the most important when it comes to focusing light so that we can see a perfect image. It focuses the light and images on the retina. As well as the pupil- the pupil is responsible for controlling the amount of light to enter into the eye.

What are two functions of the lens of the eye quizlet?

What is the function of the lens? The lens enables the changing of focus. The lens can alter its refractive power by changing its shape, a process called accommodation.

What are the major structures of the eye?

The term gross anatomy of the eye pertains to the structures that are visible when looking at an eye, and there are also many parts that can’t be seen under normal circumstances. A few of the visible parts include the the cornea, iris, pupil, sclera, and conjunctiva; other internal structures include the lens, retina, and optic nerve.

What is the structure and function of the eye?

The human eye is a roughly spherical organ responsible for perceiving visual stimuli. It is enclosed within the eye sockets in the skull and is anchored down by muscles within the sockets. Anatomically, the eye comprises two components fused into one, hence, it does not possess a perfect spherical shape.

What is the anatomical structure of the eye?

The eye is made up of three coats, or layers, enclosing various anatomical structures. The outermost layer, known as the fibrous tunic, is composed of the cornea and sclera. The middle layer, known as the vascular tunic or uvea , consists of the choroid, ciliary body, pigmented epithelium and iris.

What are the parts of the eye and their function?

The human eye works by sending light through a series of specialized parts to the optic nerve directly to the brain. Light-processing parts include the cornea, pupil, crystalline lens, retina, and finally the optic nerve itself. Each part of the eye has a specific task to help the brain receive signals that it can translate into usable visual input.