Correlate the structure of the conjunctiva with its functions and clinical presentations in common clinical disorders. The conjunctiva is a tissue that lines the inside of the eyelids and covers the sclera the white of the eye. Download human anatomy and physiology pdf 10th edition. Strabismus turned eye phoria weakness of eye muscles eyeball 3 layers or tunics. Another term for the palpebral conjunctiva is tarsal conjunctiva. Overview of conjunctival and scleral disorders eye. Dartt introduction the conjunctiva is a thin, semitransparent mucous membrane that covers the posterior surface of the eyelids and is then reflected onto the eyeball, where it extends to the limbus of the cornea. What is the pathophysiology of bacterial conjunctivitis.
The constitution of goblet cells within the epithelium at each of these regions is fluctuant. Chemosis of the conjunctiva is a type of eye inflammation, which causes the eyelids to swell. Basic anatomy and physiology surface anatomy surface anatomy is the identification of landmarks on the surface of the skin which allows us to compare our knowledge of our own surface anatomy with that of an injured person. This region of the conjunctiva is bound tightly and moves with the eyeball movements. Dec 21, 2018 to understand the diseases and conditions that can affect the eye, it helps to understand basic eye anatomy. For more specific information on the diagnosis and management of conjunctivitis, read on. The diaphragm is the large dome shaped muscle that contracts and relaxes during breathing. The inflammation may be caused by a viral or bacterial infection. Conjunctiva is continuous anteriorly with the epithelium of the cornea. Human anatomy and physiology i arkansas state university. It can also be caused by a chemical burn or mechanical. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. The conjunctiva is a loose connective tissue that covers the surface of the eyeball bulbar conjunctiva and reflects back upon itself to form the inner layer of the eyelid palpebral conjunctiva.
Transparent mucous membrane which lines the inner surfaces of the eyelids and is reflected over the anterior surface of the eye ball before terminating at the limbus. All the anatomy and physiology notes are combined in the pdf form in this book. Conjunctivae definition of conjunctivae by medical dictionary. The surface tissues of the eye and the ocular adnexa are colonized by normal flora such as streptococci, staphylococci, and corynebacteria. The low power view of the histology of conjunctivitis shows a delicate specimen with a mild spongiotic reaction pattern figure 1. Six extraocular muscles in the orbit are attached to the eye. Conjunctiva answers conjunctiva named because it conjoins the eyeball to the lids is a thin, transparent mucous membrane that lines the posterior surface of the lids, and is then reflected forwards on the eye.
Pathology of conjunctiva tatyana milman the conjunctiva is a mucous membrane that plays a critical role in maintaining ocular health by forming a smooth, flexible, and protective sac covering the pericorneal surface of the eye. The bulbar and palpebral conjunctiva are continuous see illustration. If so, share your ppt presentation slides online with. The conjunctiva is divided into the following threeparts. Anatomy can be painful for some personally, i hated anatomy in medical school so im going to keep this simple. Conjunctiva thin mucus membrane extending from the limbus posteriorly covering the anterior part of the sclera then the conjunctiva is reflected at the fornix to cover the inside of the upper and lower lids the folding of conjunctiva between the eye ball and eye lid creates a bag like structure called the conjunctival sac. The notes are taken from the books which are written by the best authors from the field of medical sciences. Anatomy, head and neck, eye conjunctiva statpearls ncbi. Anatomy it is the mucous membrane covering the under surface of the lids and anterior part of the eyeball upto the cornea. The textbook follows the scope and sequence of most human anatomy and physiology courses, and its coverage and organization were informed by hundreds of instructors who teach the course. The limbus 1 is the junction of the conjunctiva and cornea. The bony orbits surround the eyeballs, protecting them and anchoring the soft tissues of the eye figure 1. Conjunctiva is the major supporting tissue of the ocular surface.
The anatomical and functional relationship between. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The conjunctiva is the thin mucous membrane lining the eyelid. A significant increase of the bulbar conjunctival epithelium thickness was observed in patients treated with ioplowering medications and in patients with dry eye.
Based on the anatomy what types of cancers would you expect to be found in the conjunctiva. Anatomy, physiology, symptomatology and classification pranay shinde dnb resident deen dayal upadhyay hospital,new delhi 2. The conjunctiva covering the eyeball, over the sclera. Conjunctiva anatomy and physiology is the property of its rightful owner.
The regional variation of the conjunctiva start with an overview in a photograph in which the patient is looking up. There also is a test for color deficiency and three short quizzes. Finally, the conjunctival fornices are divided into the superior, inferior, lateral, and. Conjunctivitis affects many people and imposes economic and social burdens. The conjunctiva is the mucous membrane that lines the eyelid and covers the visible portion of the eyeball except the cornea the transparent part of the eyeball that covers the iris and the pupil. The eyelids are split into upper and lower portions, which meet at the medial and lateral canthi of the eye. In the photo below identify the various topographical areas of conjunctiva. Introduction conjoin to join so the name conjuctiva has been given to this mucous membrane owing to the fact that it joins the eyeball to the lids it is a translucent mucous membrane which lines the posterior surface of. You may find the infective conjunctivitis article more useful, or one of our other health articles. Learn conjunctiva with free interactive flashcards. Anatomy of conjunctiva explained in brief reference a. The tunica conjunctiva consists of an epithelial layer and a connectivetissue base. Meanwhile, the forniceal conjunctiva creates a fold where the eyelid meets the eyeball at the medial canthus. Conjunctivitis, inflammation of the conjunctiva, the delicate mucous membrane that lines the inner surface of the eyelids and covers the front part of the white of the eye.
Start with broad spectrum topical antibiotic, if severe may need systemic antibiotics. This section of the conjunctiva covers the anterior part of the sclera or the white of the eye. Anatomy and physiology find, read and cite all the research you need on. Conjunctiva definition and detailed illustration all about vision.
Khurana anatomy and physiology of the eye slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Learn more about other symptoms and how to treat them. Therefore our recommendation is that if you want to study the subjects in great detail you should consult snells clinical anatomy for anatomy and essentials of physiology pdf for human physiology. Nurcahya ardian bramantha,spm learning objectives at the end of the session the students would be able to. Conjunctiva histology and anatomy essay example topics and. As they spread to the ends of the lungs they eventually form a grapelike structure known as the alveoli. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects.
Anatomy and physiology of the lungs bronchi gradually form more generations, like a tree branch, and become smaller and smaller. They offer protection from excessive light or injury, and maintain lubrication by distributing tears over the surface of the eyeball. Anatomy and physiology of the conjunctiva presented by arundhati hatikakoty bachelor of optometry 3rd year roll no 302 2. Parts of the eye american academy of ophthalmology. Anatomy, physiology, symptomatology and classification dr. The conjunctiva is the transparent mucous membrane that covers the posterior surface of the lids and the anterior surface of the eyeball as far as the cornea. The conjunctivais a clear mucous membrane that lines the inner surfaces of the eyelids and and continues on to cover the front surface of the eyeball, except for the central clear portion of the outer eye the cornea. The conjunctiva takes its name from the fact that it conjoins the eyelids with the.
Conjunctiva anatomy by dr bal kishore, cell biologist and neuro anatomist. The conjunctiva is highly vascularised, with many microvessels easily accessible for imaging studies. What specialized cells are contained in the conjunctiva. Conjunctivitis is inflammation of the conjunctiva of the eye histology of conjunctivitis. However, a closer look at innervation, circulatory, lymphatic, and neurogenic systems reveals. The conjunctiva keeps bacteria and foreign material from getting behind the eye.
Conjunctiva is a continuous membrane, and for practical and clinical purposes it is subdivided into palpebral, forniceal, and bulbar zones. Conjunctiva mucous membrane palpebral conjunctiva bulbar conjunctiva eyelashes sebaceous ciliary glands at base of hair follicles hordeolum or stye lacrimal apparatus forming and draining tears. Opthamology lecture 5 conjunctiva flashcards quizlet. Clinical anatomy and physiology of the visual system, 3rd edition. To understand the diseases and conditions that can affect the eye, it helps to understand basic eye anatomy. Alterations in the host defense, in the bacterial titer. Listed below is a list of all the features of these notes.
The conjunctiva is a thin, transparent, vascularized mucous membrane that covers the posterior surface of the eyelids. Is the conjunctiva normally lined by keratin in the outer layers. Conjunctiva palpebral conjunctiva marginal tarsal orbital bulbar. Endothelium a single layer of cells lining the inner surface of descemets membrane. The palpebral conjunctiva extends from the mucocutaneous junction at the lid margin to the upper and lower margins of the tarsal plate. The majority of the blood supply for the bulbar conjunctiva near the limbus is derived from the anterior ciliary arteries. The eyelids are thin, mobile folds that cover the eyeball anteriorly. Human anatomy and physiology is designed for the twosemester anatomy and physiology course taken by life science and allied health students. Let us start from the outside and work our way toward the back of the eye. Feb 23, 2014 everything you want to know about eye allergies. But if you want to study them briefly and combine then you can download human anatomy and physiology at the end. There are numerous anatomic connections between the allergic conjunctivitis and allergic rhinitis.
Inflammation of the conjunctiva is called conjunctivitis. They are written by uk doctors and based on research evidence, uk and european guidelines. This portion covers the inner surface of both the upper and lower eyelids. Overview nonneoplastic diseases of the eyelid skin nonneoplastic diseases. The conjunctiva contains visible blood vessels that are visible against the white background of the sclera. Disorders of the conjunctiva and cornea are a common source of eye complaints. It is composed of unkeratinized, stratified squamous epithelium with goblet cells, and stratified columnar epithelium. Anatomy and function of the conjunctiva ibrites wordpress. The conjunctiva is the membrane that lines the eyelid and loops back to cover the sclera the tough white fiber layer covering the eye, right up to the edge of the cornea the clear layer in front of the iris and pupilsee structure and function of the eyes. The bulbar conjunctiva stops at the junction between the sclera and cornea. Identify important anatomical landmarks of conjunctiva. A histological sagittal section of both eyelids and the eye are shown here.
The conjunctiva is a transparent mucous membrane that covers the sclera, which is the white of the eye the conjunctiva lines the inner surfaces of the eyelids. Nov 20, 2015 the conjunctiva is composed of three connected parts. Conjunctiva definition of conjunctiva by the free dictionary. The bulbar conjunctiva is divided into scleral and limbal parts. This resource includes descriptions, functions, and problems of the major structures of the human eye. A rarely occurring primary bacterial infection of the conjunctiva leading to purulent discharge and conjunctival hyperemia. The most obvious reason is the physical connection via the nasolacrimal apparatus. Allergies affect hundreds of millions of people worldwide and oculareye allergy affects approximately one in five people worldwide. Choose from 500 different sets of conjunctiva flashcards on quizlet. The bulbar conjunctiva 2 covers the eyeball and extends into the recess created by forniceal conjunctiva 3. Physical characteristics water content, protein content, cells, resistance to trauma 2.
The conjunctiva is a thin, transparent layer of tissues covering the front of the eye, including the sclera and the inside of the eyelids. The conjunctiva is a mobile mucous membrane covering the inner surface of the lids, the inner and outer surfaces of the third. It is estimated that acute conjunctivitis affects 6 million people annually in the united states. Ppt anatomy and physiology nervous system powerpoint. Chapter 1 introduction to anatomy and physiology an understanding of the structure anatomy and function physiology of the human body is important in the life of every individual. A thin, clear, moist membrane that coats the inner surfaces of the eyelids palpebral conjunctiva and the outer surface of the eye ocular, or bulbar, conjunctiva. Pathology of the eyelids, conjunctiva and orbit philippe labelle, dvm, dacvp antech diagnostics. Here is a tour of the eye starting from the outside, going in through the front and working to the back. Conjunctivae definition, the mucous membrane that lines the exposed portion of the eyeball and inner surface of the eyelids.
Apr 23, 2018 conjunctiva anatomy by dr bal kishore, cell biologist and neuro anatomist. Professional reference articles are designed for health professionals to use. Pseudostratified columnar epithelium rich in goblet cells may mimic dysplasia contains accessory lacrimal tissue, ductules of main lacrimal gland and lymphoid follicles. Vision is the special sense of sight that is based on the transduction of light stimuli received through the eyes. The conjunctiva is a mucous membrane that plays a critical role in maintaining ocular health by forming a smooth, flexible, and protective sac covering the pericorneal surface of the eye. Anatomy and physiology find, read and cite all the research you need on researchgate. The palebral conjunctiva lines the underside of the eyelids, while the bulbar conjunctiva covers the front of the eyeball itself. Culture, cytology should see neutrophils and bacteria, must rule out kcs, dacryocystitis, and eyelid disease. Conjunctiva article about conjunctiva by the free dictionary.