Although written foremost in mind for histotechnology students. Muller cells are the principal glial cell of the retina. Retinal dysplasia in dogs symptoms, causes, diagnosis. Learn retina anatomy with free interactive flashcards. The retina consists of the rods, cones, bipolar cells, ganglion cells, horizontal cells, and amacrine cells. It is in immediate contact with the vitreal cavity on one side and with the choroid of the uveal layer on the other side. Ocular anatomy and variations in laboratory animals. In the center of the retina is the optic nerve, a circular to oval white area measuring about 2 x 1. Ocular dimentions axial length mm corneal thickness mm anterior chamber depth mm lens thickness mm vitreous chamber depth mm reference human 23. In life, these two components are fused into what we. Tarsal glands produce oily secretions to prevent tears from leaking out, while the eyelids stay dry. This book presents a brief survey on the bacteriology and parasitology of the eye. Histology and histopathology of the eye and its adnexa 1st. A retinal detachment rd is the separation of the sensory retina from the retinal pigment epithelium rpe outer segments of the photoreceptors from the microvilli of the rpe.
The retina is the innermost, lightsensitive layer of tissue of the eye of most vertebrates and some molluscs. For studying a tissue many histological techniques may be applied from a simple staining with hematoxilineeosin to. Choose from 500 different sets of retina anatomy flashcards on quizlet. Relative contributions of the neurosensory retina and retinal.
Nov 25, 20 normal histology of retina eye pathology online nov 25, 20 normal histology of retina eye pathology online. These pages are not intended to be a replacement for a good textbook. Book october 2017 with 21,570 reads how we measure reads a read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a. The retina functions in a manner similar to film in a camera. From the center of the optic nerve radiates the major blood vessels of the retina.
Tends to invade optic nerve particularly large exophytic tumors with secondary glaucoma. The total retina is a circular disc of between 30 and 40 mm in diameter polyak, 1941. By and large this is a book which should be suitable for most histology courses. This essay will identify and discuss the key structure and functions of main parts of the eye. When you lose the neural retina and the rodscones attached to the pigmented epithelium become detached what are the 10 layers of the retina from choroid to vitreous. The rpe is composed of a single layer of hexagonal cells that are densely packed with pigment granules when viewed from the outer surface, these cells are smooth and hexagonal in shape. At the umbo, the neural retina consists only of the inner limiting membrane, the henles fiber layer, the outer nuclear layer, the external limiting membrane, and the photoreceptors outer and inner segments fig. All the pages you can call from the table below are graphics intensive. Rod photoreceptors detect motion, provide blackandwhite vision and. Retinal traumacontusion a blunt blow to the eye at just the right force sets up an energy wave which propagates through the retina and fragments the tissue. Blue histology lecture and lab notes all the pages you can call from the table below are graphics intensive. Microscope slide showing histology in the layers of retina. But a few things irk me a little although they may be a matter of taste. Mild retinal degeneration, featuring loss of rod and cone photoreceptor processes.
Master histology with idealized and actual photomicrography. Rd can reduce the vision of your dogs eye and is usually a genetically inherited condition. When seen in section, each cell consists of an outer nonpigmented part containing a large oval nucleus and an inner pigmented portion which extends as a series of straight threadlike processes. Three basic types of glial cell are found in the human retina, muller cells, astroglia and microglia. Freida carson returns with the thoroughly revised and expanded 4th edition of her perennial bestseller, histotechnology. Nov 25, 20 nov 25, 20 normal histology of retina eye pathology online. Normal adult retina, high power microscopic fallopian tube. Histology and histopathology of the eye and its adnexa. Pigment epithelium, layer of rodscones, outer limiting layer, outer nuclear layer, outer plexiform layer, inner nuclear layer, inner plexiform layer, ganglion cell layer, nerve. The retina is the lightsensitive tissue that lines the inside of the eye.
Retina, choroid and sclera labels histology slide this is a histology slide of the retina, choroid and sclera. Study 37 histology ch 20 eye flashcards from connor k. The outer segments rods and cones of the receptor cells penetrate the outer membrane to contact the pigmented epithelium. Normal histology of retina eye pathology online pathology. Histology and histopathology of the eye and its adnexa provides information pertinent to the histopathology of the eye. Study 56 retina histology 2 flashcards from lindsey o. Histology of retina we will take about the histology of the retina rapidly. Click on the tags below to find other quizzes on the same subject. Realistic, fullcolor illustrations as well as actual photomicrographs of histologic structures are complemented by.
Mescher 20 junqueiras basis histology text and atlas, th ed. This website is intended for pathologists and laboratory personnel, who understand that medical information is imperfect and must be interpreted using reasonable medical judgment. The anatomy and histology of the human eye 1868 by abraham metz author isbn. Answer educational computing homepage curriculum homepage histology homepage histology courseware. For ophthalmologists, optometrists, medical, dental, and optometry students, eyeanatomy forms the basis for eyepathology in diseases. Otherwise, if you are like me and would like to save the. The retina is actually an extension of the brain, formed embryonically from neural tissue and connected to the brain proper by the optic nerve. Retina histology 2 at pacific university studyblue. An understanding of the histology of the retina is essential to consider for complete insight into diseases involving a vital sensory component in the eye.
Organized into three parts encompassing 20 chapters, this book begins with an overview of the normal histology of the eye. Simple histology of the retina faculty of medicine. This is a quiz called histology in layers of the retina and was created by member hughee. The retina contains receptor cells, neurons, pigmented epithelium and supporting cells. Figure 1 eye, retina normal in a male f344n rat from a chronic study. They form architectural support structures stretching radially across the thickness of. Many tables contain lots of fairly detailed information without it ever being said why one should know it ok, maybe this is intended to give the book an overhead of facts. The superior and inferior tarsal plates are dense fibrous plates that give support and form to the eyelids. Years ago, most student would purchase histology textbooks. Histology ch 20 eye histology 2016 with sperry at the. The retina serves a function analogous to that of the film or image sensor in a camera. Dec 07, 2017 the retina is the lightsensitive tissue that lines the inside of the eye.
The optical elements within the eye focus an image onto the retina of the eye, initiating a series of chemical and electrical events within the retina. In the macula, we find the thickest portion of the retina surrounding the thinnest portion, the foveolar area. The red line between the outer nuclear layer and the receptor layer is the site of the outer limiting membrane, a basal lamina bounding the neural retina. Tissue biology histology slides medicine notes my future job medical laboratory science lymph nodes lymphatic system study hard science books. Although, it is not just the eye involved in vision, the brain also plays a key role in how we see and interep the world. A schematic section through the human eye with a schematic enlargement of the retina the retina is approximately 0. A more powerful force will tear the retina, but not propagate as a wave. Figure 2 eye, retina degeneration in a male f344n rat from a chronic study.
A less powerful force can cause reversible damage with no detectable structural damage. Cell biology of the retinal pigment epithelium clinical gate. Some authors have concluded that this phenomenon is primarily due to xanthophyll pigment in the neurosensory retina nr of the macula, which acts as an optical filter of the exciting blue light. A text and atlas which has great slides and explanations. The complexity of the retina, from its precise multilayered structure to its various cell types and function, will be discussed briefly in this overview. The optics of the eye create a focused twodimensional image of the visual world on the retina, which translates that image into electrical neural impulses to the brain to create visual perception. Nuclear membrane plasma membrane cell membrane histology slides atlas book medicine notes microscopic photography medical laboratory science medical anatomy. Retina the retina is the innermost layer of the wall of the eye. There is a printable worksheet available for download here so you can take the quiz with pen and paper. This barcode number lets you verify that youre getting exactly the right version or edition of a book. The term retinal dysplasia really just means a malformation within the retina while dysplasia simply means that there is an abnormal or unusual development within a structure. Relative contributions of the neurosensory retina and. Retina is a privileged part of the central nervous system for its accessibility and the possibility of study isolated from the rest of the eye. There are two types of photoreceptor cells in the human eye rods and cones.
The retina histology and physiology linkedin slideshare. This thirteenth edition of atlas of histology with functional correlations formerly difiores provides a rich understanding of the basic histology concepts that medical and allied health students need to know. Mcgraw many illustrations in these vibs histology youtube videos were modified from the following books and sources. With an emphasis on what you need to know versus whats nice to know, and featuring more than 400 fullcolor illustrations and micrographs, it offers a focused, streamlined overview of human histology. This is an online quiz called histology in layers of the retina. Some times the retinal vessels on the detachment will be dark in appearance, as seen in a retinoschisis. Histologically, the retina can be divided into 10 layers and all of this found in the hand book but i will talk about the cell of layers which is very important to distinguish the color. Also, understanding features involving both structure and function will help. At the posterior end, one can easily identify the optic nerve originating from the optic disc. Distant metastases to cranial vault, skeletal system. Basic histology is described, along with illustrative images, in this set of short tutorials arranged by organ system.
Histology pages, school of anatomy and human biology, uwa, australia, by lutz slomianka. See more ideas about anatomy and physiology, histology slides and medical science. By barbara young bsc med scihons phd mb bchir mrcp frcpa wheaters functional histology. Nerve fibers within the retina send electrical signals to. The eye is the organ of sight which helps us navigate through the world around us hollows, 2015. If you are still a book person, let me suggest histology.
The retina is the sensory membrane that lines the inner surface of the back of the eyeball. It may take a some time to load them if you access the pages from the web and if you have a slow connection. Histology ch 20 eye histology 2016 with sperry at the brody. The vitreal cavity is filled with the gellike vitreous body, while.
However, recently, a number of medical schools have created free and easytouse websites for studying histology. The pigmented layer of retina or retinal pigment epithelium rpe is the pigmented cell layer just outside the neurosensory retina that nourishes retinal visual cells, and is firmly attached to the underlying choroid and overlying retinal visual cells. Play this quiz called histology in layers of the retina and show off your skills. However, the retina of some mammals does not contain cones, and, as mentioned before, cell layers which would be pigmented in normal humans will not be so if the eye has been collected from an albino many laboratory strains of small ammals are albinoid. Retina, layer of nervous tissue that covers the inside of the back twothirds of the eyeball, in which stimulation by light occurs, initiating the sensation of vision. All were described for the retina by cajal more than one hundred years ago 1892.
This is likely due to the vessels blocking the exiting light. Its composed of several layers, including one that contains specialized cells called photoreceptors. Histology ch 20 eye histology 2016 with sperry at the brody school of medicine east carolina university studyblue flashcards. Jun 22, 2017 histology of retina we will take about the histology of the retina rapidly. Simple anatomy of the retina by helga kolb webvision. Normal histology return to the histology main menu.1083 1213 1379 94 525 132 738 419 1421 64 773 803 374 806 10 1377 831 1357 1168 57 1309 696 500 822 1124 373 2 769 1264 263 1483