The Anatomy Of The Eyeball

The sclera is outermost layer of the eyeball. GROSS ANATOMY OF THE EYE 2.

Human Eye Anatomy Parts Of The Eye Explained Eye Anatomy Anatomy Human Anatomy And Physiology

The white visible portion of the eyeball.

The anatomy of the eyeball. This is a strong layer of tissue that covers nearly the entire surface of the eyeball. The orbit is formed by the cheekbone the forehead the temple and the side of the nose. It is the white and opaque part of the eyeball.

Anatomically the eyeball can be divided into three parts the fibrous vascular and inner layers. Just behind the iris and pupil lies the lens which helps focus light on the back of your eye. Light enters our eyes through the pupil then passes through a lens and the fluid-filled vitreous.

External Anatomy of the Eye Eyes are organs of the visual system. Eyeball spheroidal structure containing sense receptors for vision found in all vertebrates and constructed much like a simple camera. Found within two cavities in the skull known as the orbits the eyes are surrounded by several supporting structures including muscles vessels and nerves.

Outer eyeEyelids protect the eyeball and distribute tears across the cornea closure by contraction of orbicularis ocuii muscle facial nerve opening by levator muscle oculomotor nerve lid margin comprises a row of lashes in front of a row of meibomian gland orifices separated by the grey line 21. The iris lens retina and cornea are just a few parts of this complicated organ. It lies in a bony cavity within the facial skeleton known as the bony orbit.

Our eyes are highly specialized organs that take in the light reflected off our surroundings and transform it into electrical impulses to send to the brain. There are 7 bones of the orbit two groups of muscles intrinsic ocular and extraocular three layers to the eyeball and thats just the beginning. Structure containing muscle and is located behind the iris which focuses the lens.

Eye muscles which control eye movement are seen in the image above. Muscles responsible for moving the eyeball are attached to the eyeball at the sclera. The anatomy of the eye is fascinating and this quiz game will help you memorize the 12 parts of the eye with ease.

The iris controls widening and narrowing dilation and constriction of the pupil. The cornea is the transparent dome-shaped part of the eyeball. Layer containing blood vessels that lines the back of the eye and is located between the retina the inner light-sensitive layer and the sclera the outer white eye wall.

The eyeball and its functional muscles are surrounded by a layer of orbital fat that acts much like a cushion permitting a smooth rotation of the eyeball about a virtually fixed point the centre of rotation. Anatomy of the Eye. The Eye - Science Quiz.

Once light enters the eye it forms an upside-down image on the back of the interior of the eyeball the retina. The anatomy of the eyeball in humans includes a round pupil though the pupil may be square or elliptical in other animals. Cystic structure kept distended by the pressure inside it Shape-oblate spheroid Anterior and posterior poles Equator Dimensions AP-24mm Horizontal-235mm Vertical diameter-23mm Circumference-75mm Vol-65ml Weight-7g 3.

The eyeball consists of three layers. The cornea contains no blood vessels and is extremely sensitive to pain. Anatomy of the Eye.

Eyes detect light and convert it into electro-chemical impulses in neurons. The eyeball houses the retinaan extremely metabolically active layer of nerve tissue made up of millions of light receptors photoreceptorsand all of the. It refracts the light entering the eye onto the lens which then focuses it onto the retina.

A series of fibers that connects the ciliary body of the eye with the lens holding it in place. The protrusion of the eyeballsproptosisin exophthalmic goitre is caused by the collection of fluid in the orbital fatty tissue. The extraocular muscles are attached to the white part of the eye called the sclera.

Anatomy of the Eye. Most of the eye is filled with a clear gel called the vitreous. Functionally the most important layer is the retina which receives the external visual stimuli.

Cornea - The cornea is the clear dome-like structure on the front part of the eyeThe cornea delivers 23 of the refracting power to the eye. Suspensory ligament of lens. The eyeball is a bilateral and spherical organ which houses the structures responsible for vision.

Light projects through your pupil and. At the front of the eyeball the sclera becomes the cornea. The posterior pole of the eyeball is connected with the optic nerve CN II which conveys the information from the retina to the brain.

Conjunctiva - The conjunctiva is a mucus membrane that covers the surface of the eye and the inner part of the eyelids. The transparent circular part of the front of the eyeball. Fibrous vascular pigmented and nervous retina.

The muscles that move the eyeball are attached to the sclera. They provide animals with vision the ability to receive and process visual detail as well as enabling several photo response functions that are independent of vision. The eye is cushioned within the orbit by pads of fat.

In addition to the eyeball itself the orbit contains the muscles that move the eye blood vessels and nerves.

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