Eye Anatomical Terms Explanation - LESSON 266

-
In the travel of learning free medical transcription course, we are going to learn about anatomical terms explanations of eyes. As a medical transcriptionist student, you should know about all the anatomy and physiology, not like a medical student for surgical purpose, but you should know something basic 
information about them. We explained something in the prior lesson about this topic about what is accomodation, anterior chamber, aqueous humor, biconvex, layer of choroid, ciliary body, cones, conjuctiva, cornea, fovea centralis, fundus of the eyes, lens, iris, macula, optic chiasm, and optic disk. In this lesson, we will learn about, optic nerve, posterior chamber, pupil, refraction, retina of the eyes, rods, sclera, vitreous chamber, vitreous humor one by one. Okay.

Optic Nerve: The other name of optic nerve is cranial nerve 2, which receives and delivers eye sight messages to the brain from the part of cerebral cortex from the retina of the eye.

Posterior Chamber: This is a narrow area behind the iris, which contains a liquid called aqueous humor. Posterior chamber is situated in the front side of the lens's suspensory ligament, as well as ciliary processes.

Pupil: This is a dark hole that situated at the central portion of the iris. The light passes through the eye is taken in by the tissues present here. In simple, pupil is the entrance of the eye.

Refraction: An image is formed inside the eye through the process of refraction. By way of lens and cornea, the entered light rays from the pupil are bended and targeted towards the retina and so we can feel visual sensation of lights.


Retina: This is a tissue lining that is responsive to the light waves that is present inside surface of the eye. Retina consists of color receptor cells called cones and rods.

Rods: These are cells present inside the eye that are photoreceptor cells. Rods are present inside the retina. These rods absorbs mainly black and white waves and so we can see at night.

Sclera: Each eye contains an external coat in the eyeball called sclera, which is very tough in structure. We can see this portion outside and this is also called as 'white of the eye. This hard layer performs as the protective cover of the eye made up of elastic fibers and collagen.

Vitreous Chamber: This chamber occupies about four fold place in five of the eyeball area. This chamber is present between the retina and the lens.

Vitreous Humor: It is a gel-like material present inside the viterous chamber and named as vitreous humor.

Home Page:

To go to the prior lesson from here, please click the link below

Comments

Post a Comment

Popular posts from this blog

Abdominopelvic Quadrants and Regions - Lesson 5

-
Abdominopelvic quadrants and regions are divided into 9 regions as per the division of the abdominal and pelvic cavities to explain the regions in which internal organs are found. They are as follows: Hypochondriac, epigastric, lumbar, umbilical, inguinal, and hypogastric. Now we will see about all abdominopelvic quadrants and regions one by one now. 1. Hypochondriac regions (2): The two upper right and left regions below the cartilage (chondr/o) of the ribs that extend over the abdomen. 2. Epigastric regions (2): This is the region above the stomach. 3. Lumbar regions (2): The two right and left regions near the waist part of the body. 4. Umbilical regions (1): The region of the umbilicus or navel portion of the body. 5. Inguinal regions (2): The two lower right and left regions of the body, inguin/o means groin that is the area where the two legs join together with the trunk of the body. This region is also called iliac regions because they are near the ilium part
Read more

Parts of Speech - Noun, Pronoun, Verb, and Adverb - A Medical Transcriptionist Must Know.

-
Image
Grammar is very crucial in any language.  A medical transcriptionist must be well-versed in his language skills i.e. writing skills.  This unavoidable skill needs specialized knowledge in English grammar apart from strong listening skills and medical language skills, computer operating skills, and fast typing skills are of having secondary importance to be a successful medical transcription professional. In this post, we will see about basic parts of speech in English, such as, 1.  NOUN. 2.  PRONOUN. 3.  VERB. 4.  ADVERB.  We will see about one by one now. 1.  Noun - A noun is used to denote a name of a person, animal, place, of a inhuman thing in the universe.  For example, 1.  John is a name that denotes a boy.  2.  Dog is a name that specifies an animal. 3.  San Diego is mentioned to denote a place. 4.  Stone is denoted to specify an inhuman thing. Further read about NOUN 2.  Pronoun:  In a language, pronoun is used to specify any type of noun i
Read more

Body Cells and Differentiation-Lesson 1

-
Image
Body cells are different types. We often may read about stem cell types. Like in a movie there are many actors to do their different roles to establish a story, in our body there are different kinds of cells to do different roles to keep the body stable and active. The cells in our body are of two types: 1. Somatic cells. Our body contains Muscle cells, Nerve cells, Skin cells, and Fat cells. These kind of cells performing mainly body related functions and so they are called Somatic cells. There are varieties of cells inside the body. Every cell is different or specially created to do their special role inside the body throughout. Fat Cell: For example in body cells a FAT CELL has in it empty and large spaces for fat storage, and a muscle is slender and long and has in it fiber material that help in relaxing and contracting, as well as a skin cell is square in shape and also flat in structure to give protection to our body and a nerve cell which is long in struct
Read more