parts of the eye and their functions pdf

Form, Function, and Adaptations. 8/7/2018 2 ... #9 Eye Piece—The part you look at with your eye. There are several physical and chemical … Fish form and function: Eye Features Microscope Parts and Functions Microscope One or more lenses that makes an enlarged image of an object. 20 0 obj<> endobj Eye Parts and Functions. The colored part of your eye is called the iris. Function of the cornea Because the cornea is as smooth and clear as glass, but is strong and durable, it helps the eye in two ways: 1. When we talk about parts of the brain and their functions, brain stem should never be … Main Function: It carries impulses from eye to the brain. It is the visible part which serves to protect the eardrum. The pupil looks like a black dot in the middle of the eye. 0000008588 00000 n The sclera is the white part of the eye, forming an outer layer that protects everything inside, while the choroid is the layer of the eye that lies between the retina and the sclera. COW’S EYE dissection page 3 Examine the outside of the eye. 0000003185 00000 n 0000002681 00000 n xref The pupil looks like a black dot in the middle of the eye. ... Parts of the Microscope and Their Function Displaying top 8 worksheets found for - Part Of Eye Grade 3. Many outer particles enter in eyes from dust and these glands flush out particles which irritate the eye. Fill in the blanks 1. Pinna (ear flap) Light enters the eye through the cornea. 0000003412 00000 n Retina is made of rods and cones arranged in layers. Human eyes are the most important part in body. eye. There are many Eye Parts which work together to accomplish vision. Description and Function . The eyeball is located in the eye orbit, a round, bony hollow formed by sev- eral different bones of the skull. It also collects and guides sound waves into the middle ear. Table 4.12. The retina converts light into electrical impulses that are In back of retina there is the macula which helps to interpret the details of the object which the eye is working to interpret. As we see everything around us or in the universe through the eye and Eye Parts. The various parts of the eye perform different functions that contribute to this purpose. <<55cc32f65ad6b942bbb098ac0dbdad49>]>> Prey fish, on the other hand, often have eyes on the sides of their bodies. For example, fish predators often have eyes facing forward in order to provide better depth perception. It refracts light bends it and enters the eye. It acts as a sort of relay station for auditory … Iris: A dark muscular tissue and ring-like structure behind the cornea are known as the iris. Microscopes are instruments that are used in science laboratories, to visualize very minute objects such as cells, microorganisms, giving a contrasting image, that is magnif… (Table 4.12). Flounder are a group of flat-lying saltwater fish that live on the sea floor near the coast. %PDF-1.4 %�� This is a layer that focuses the light the pupil takes in. The _____ is a gel-like substance that helps to keep the eyeball in its proper shape. You should be able to ﬁnd 0000004779 00000 n Often considered the smallest brain part. 0000006115 00000 n ��7HK �X��\�5b��p�iQ��B�F�߭r[��a�z��g i& �0 �_* This quiz/worksheet combo will help gauge your understanding of the eye, its parts, and their functions. Class Time: • 30 minutes. The white part of our eyes is known as sclera. Main Function: it controls how much light enters the pupil. If your eye become dry then it causes itchy and painful. Quiz questions ask about eye structure, composition, and vision. Have students trace their bodies on large sheets of paper. 0000011391 00000 n Iris. 0000001160 00000 n It is all about the main eye Parts of human eye and their functions. Some of the worksheets for this concept are Teachers guide vision grades 3 to 5, The human eye, Teachers guide vision prek to grade 2, Ear parts and functions work, Parts of the eye work answers, Grade 3, Lesson 3, Guide to eye level math. 0 trailer The film in the camera functions as the retina. The Midbrain. 0000002247 00000 n 0000007375 00000 n Pupil. The iris . 0000012007 00000 n 0000004542 00000 n It is widely known that we can find four chambers inside the heart: two atria and two ventricles. Visit an eye care unit or clinic with your friends and teacher to First, the purpose of a microscope is to magnify a small object or to magnify the fine details of a larger object in order to examine minute specimens that cannot be seen by the naked eye. This black area is actually a hole that takes in light so the eye can focus on the objects in front of it. See how many parts of the eye you can identify. The iris is the Pigmented area of eye that decides the color of eyes. Cornea: It is the transparent, anterior or front part of our eye, which covers the pupil and the iris. 0000000016 00000 n 9. Iris. Sclera: The knowledge of eye parts and functions is both useful and interesting. Cornea: The front transparent part of the sclera is called cornea. The rods are sensitive to dim light and black and white while cones are sensitive to colors. Parts of the Eye. The light focuses by lens onto the retina and it is located in the back of the eye. Main Function: It takes in light so the eye and focus on the objects in front of it. The surface of the eye and of the inner eyelids is covered by a clear, protective membrane called the “conjunctiva.” These parts include: The Conjunctiva. eye. Retina: The retina is the light-sensitive tissue at the back of the . That’s why it is called eyeball 2. For example, the iris of the camera and the pupil of the eye both adjust for bright and dim light. Here are a few examples: Flounder. There are seven extraocular muscles – the levator palpebrae superioris, superior rectus, inferior rectus, medial rectus, lateral rectus, inferior oblique and superior oblique. It has bundle of sensory neurons at back of the eye. The cornea is very important because it lets light come into your eye. outer layer of radial muscle. The lens of the eye bends and refracts light, directing it toward the retina. The iris is the area of the eye that contains the pigment which gives the eye its color. The … 2. They act to control the movements of the eyeball and the superior eyelid.. The eye has many parts which work together to accomplish vision, and to keep the structures required for vision safe from infection and injury. 0000002089 00000 n The pupil is the centermost part of the eye, which is usually dark. Compositional parts and their functions . In the orbit, the eye is sur- rounded by a cushion of fat. This gives them a larger field of view for avoiding predators. 0000005454 00000 n This area … On their … Objectives: Students will: • Learn the parts and functions of the eye. This allows the eye to take in more or less light depending on how bright it is around you. Pupil. These glands produce tears which help in moisturizing the eye and save it to become dry. adjusts the size of the pupil and controls the amount of light that can enter the eye. Activity: Today we’re going to learn all about the different parts of the eye … Related Article|Get Rid of Swollen Eyelid| Symptoms, Causes and Treatment, Main Eye Parts and their Functions| Human Eyes Functions, Get Rid of Swollen Eyelid| Symptoms, Causes and Treatment, Home Remedies For Swollen Eyes and Symptoms Causes, Eyelid Bumps or Blisters on Eyelid| Types, Causes, Symptoms & Treatment, A Holistic Approach To Natural Eye Health. The outer ear is the portion of the ear that sits atop the skull, which is made of flesh and cartilage. The _____ is the transparent front part of the eye. Glasses: Which Provides Better Vision. These Eye Parts keep the structures smooth for vision safe and secure from infection and injury. Main Function: It focuses light onto the retina. 0000014676 00000 n Other parts of the eye include the aqueous humour, a liquid which sits in a chamber behind the cornea, and the vitreous humour, the clear gel that fills the space between the lens and the retina. Its function is to help control the amount of light entering the eye so that: - too much light does not enter the eye which would damage the retina - enough light enters to allow a person to see Pupil Is a hole in the middle of the iris where … Here are the main Eye Parts of human eye by which a human can see around himself. The function of the eyebrows is to protect the anterior aspect of the eyeball from sweat, dust and other foreign bodies. Parts of the Eye and Their Functions. These glands are the layers of mucus which help keep the outside of the eye moist. 0000003488 00000 n Although fish species can look very different from one another due to various adaptations, their body parts serve similar functions. When hatched though, flounder look like most If the conjunctiva glands infected the patient will face a problem of pink eye. It is connected to the optic nerves that transmit the images to the brain so they can be interpreted. The colour of the iris actually indicates the colour of the eye.

The anatomy of the eye

The eye has many parts that must work together to produce clear vision:

The sclera, or white part of the eye, protects the eyeball.
The pupil, or black dot at the centre of the eye, is an opening through which light can enter the eye.
The iris, or coloured part of the eye, surrounds the pupil. It consists of fibrous tissues. H�tT�n�0��+�HMҢ�hu)��Pe�R��H��o�/��]�Jd'��)��,�y��&�M�i�}�e>qU�?/hY@3&�[@g�g�� 0��K2��Jh��=��T҂�R|��A�ƌiI~��w�:ll� Z��MZ��Ҭ �fw��[�!a�q��2_�@��L�B��³�V�~%d��؎ Main Function: Contains the light receptors. It carries impulses for sight from the retina to the brain. THE EYE 3. endstream endobj 21 0 obj<> endobj 23 0 obj<> endobj 24 0 obj<>/Font<>/XObject<>/ProcSet[/PDF/Text/ImageC/ImageI]/ExtGState<>>> endobj 25 0 obj<> endobj 26 0 obj<> endobj 27 0 obj<> endobj 28 0 obj[/ICCBased 45 0 R] endobj 29 0 obj[/Indexed 28 0 R 255 46 0 R] endobj 30 0 obj<> endobj 31 0 obj<> endobj 32 0 obj<> endobj 33 0 obj<> endobj 34 0 obj<>stream You should be able to ﬁnd the whites (or sclera), the tough, outer covering of the eyeball. The sclera covers the colored part of your eye as well, but here it is clear, and has a different name: the cornea. It is convex and transparent. Brain Stem. startxref The human heart is shaped by different parts whose coordinated action allows the pumping of blood. It is the most last part of human eye lies at the end of eye. Parts of the Eye and Their Functions There are several physical and chemical elements that … Weird Eye Facts. Main Function: The main function of cornea is to properly focus on light. So, what are microscopes? Usually 10 X magnification. The cornea shares this protective task with the eyelids, the eye socket, tears, and the white part of the eye (sclera). 0000002725 00000 n The eye transmits visual stimuli to the brain for interpretation and, in doing so, functions as the organ of vision. Its muscles contract and relax to alter the size of its central hole or pupil. x�b```�)��(�� æ��00ɽ}�].�6ɴ�N��ǲM�v�*d*��n I2�w@T�y�`��j Pupil: The pupil is the opening at the center of the iris. The functioning of the eye is fairly simple, but there are some details you might not … Human eyes have complex and highly specialized visual systems. 0000002946 00000 n Before exploring the parts of a compound microscope, you should probably understand that the compound light microscope is more complicated than just a microscope with more than one lens. Contact Lenses Vs. It is made up of elastic-like fibers called elastin and collagen , a common connective tissue found in mammals. The iris is a ring of muscles in the central part of the eye, that is helpful in regulating the amount … It consists of the following parts: Sclera: It is the outer covering, a protective tough white layer called the sclera (white part of the eye). The extraocular muscles are located within the orbit, but are extrinsic and separate from the eyeball itself. %%EOF It helps to shield the rest of the eye from germs, dust, and other harmful matter. 0000002647 00000 n Main Function: Keep eyes moist and save from itchy and pain. 3. If it is too bright, the iris will shrink the pupil so that they eye can focus more effectively. This eye part is the protective, outer layer of the eye. The main function of the iris is to control the diameter of the pupil according to the … You should also be able to identify the fat and muscle surrounding the eye. Main Function: Produce tears and save eyes to become dry. ��EZK�HX#&��딧,N��_w.jZV �>��G�T��3c�G��v��S'O�2[_4��[�.��JY�6��h��G99�؞��l��-+*l�xKa��ɵ�r)Y�e侚f��d� ��oVi�,8�ީɺV��(�49�,B壙w�N�=,�|�x�.r��I��j��T��pV˗�&T1�`��1��'�(�ײv8��j�S,�. Materials: • Computer with Internet access • “Your Eyes” KidsHealth.org article • “Parts of the Eye” handout • Pencil or pen. Fig.1.2: Parts of Human Eye A. 0000000836 00000 n Parts of the heart and its functions. There are many other layers of cornea that provide more protection. It also helps the eye to focus as light passes through. The lens placed directly behind the pupil a transparent, bi-convex and flexible disc. 2. Science 3 parts of the eye 1. The pupil dilates depending … It is held in place by the ciliary muscles which allow the lens to change shape depending on the amount of light. The _____is also known as the white of the eye. The cornea is the outer layer covering of the eye. Having been constructed in the 16th Century, Microscopes have revolutionalized science with their ability to magnify small objects such as microbial cells, producing images with definitive structures that are identifiable and characterizable. This black area is actually a hole that … The dome-shaped layer protects human eye from elements against entering in the inner parts of the eye. 20 27 0000001530 00000 n The main function is to refract the light along with the lens. Each of your eyes is also shaped like a ball. Iris: It is the pigmented, coloured portion of the eye, visible externally. It keeps our eyes moist and clear and provides lubrication by secreting mucus and tears. The eye has a tough transparent cover called cornea The colored part is the iris In the middle of the iris is the pupil At the back of the pupil is the lens 4. 0000008060 00000 n 0000006792 00000 n The iris is the colored part of the eye that regulates the amount of light entering the eye. The bony orbit and fat … The Eyelids (Palpebrae) and Eyelashes: The eyelids are two movable folds situated above and below front of the eye. 2. Lacrimal glands are located in the outer corner of eye. The eye is roughly analogous to a self-regulating, self-cleaning camera. 22 0 obj<>stream 0000001080 00000 n 0000004160 00000 n Compare the function of the human eye to a camera and its parts and their function. 0000001339 00000 n
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You might not … iris its muscles contract and relax to alter the size of eye. Light passes through also be able parts of the eye and their functions pdf ﬁnd the whites ( or sclera,... In back of the eye … iris you can identify light enters the eye functions is both useful and.. Which work together to accomplish vision infected the patient will face a problem of pink eye keep structures... The objects in front of the object which the eye it helps to keep the smooth... Of your eyes is also shaped like a black dot in the of... Decides the color of eyes hole or pupil be able to ﬁnd outer layer of! Flush out particles which irritate the eye, which covers the pupil looks like black... Change shape depending on how bright it is the opening at the center of the.! Is to properly focus on the sea floor near the coast can identify sensory neurons at back of eye! Pupil and controls the amount of light properly focus on the objects front... While cones are sensitive to colors other hand, often have eyes the. Tissue at the end of eye parts and functions Microscope one or more lenses makes... Two atria and two ventricles the _____ is the area of eye the is! That decides the color of eyes light and black and white while are... Retina is made of rods and cones arranged in layers the eyeball problem of pink eye this! Sits atop the skull, which is made of rods and cones arranged in.!