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Human physiology for Health and Social Care NQF Level 3: BTEC National P2: The structures of the main tissues of the body

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Introduction

Unit 10: Human physiology for Health and Social Care NQF Level 3: BTEC National P2: The structures of the main tissues of the body The aim of the assignment is to describe the structures of the four main tissues are the epithelial tissue, connective tissue, nervous tissue and muscle tissue of the body. By the understanding the assignment will be focus on depict how the structure of the main tissue is, also that going to show clearly where the position of the tissues are, what its look like? Epithelial tissue Epithelial tissues are found on surfaces as either covering outer surfaces or lining inner surfaces. That's covering or lining of all internal and external surfaces of the body. The epithelial tissue is made up of cells, its characteristic shape and the number of layer cells. They have no capillaries of their own that's why the epithelial receive oxygen and nutrients from the blood supply of the connective tissue beneath them. Epithelial tissue, regardless of the type, is usually separated from the underlying tissue by a thin sheet of connective tissue; basement membrane. The basement membrane provides structural support for the epithelium and also binds it to neighbouring structures. Squamous epithelium Squamous epithelium is a single layer and flat cells. These cells are very thin and very smooth these are important physical characteristic. They form the lining of the cavities for example mouth, heart, blood vessel and lungs and made up the outer layer of the skin. ...read more.

Middle

In this point the types of each connective tissue would be describe as below. Blood The blood consist of cells and plasma, cells are living portion. The ells of the blood include red blood cell, white blood cell, plasma and platelet. The water of plasma contains nutrients salts and waste product to transport these materials to all the body. As we knew the blood forming are the red marrowbone and lymphatic tissue, the red marrowbone which produce the red blood cells of the body as well as white blood cells and platelet. That two kinds of blood cell are the same produce the lymphatic and has different essential function such as red blood cell is carry oxygen to their haemoglobin and the white blood cell is provide the ability to destroy the pathogen of the disease which call immunity. Areolar connective tissue Areolar connective tissue is a loose connective tissue are called fibroblast comprised of semi fluid ground substance consist of fibers and cells. Collagen fibers are very strong, elastin fibers are elastic that is able to binding parts together. There are two types of, the most numerous of which are thicker, lightly-staining collagen us fibers that crisscross the matrix in a random fashion. Thinner, more darkly stained elastic fibers composed of the protein elastin can also be seen. Also the areolar connective tissue is found beneath the dermis of the skin and beneath of the epithelial tissue of the all body system. ...read more.

Conclusion

There are three types of muscles such as skeleton, smooth muscle, cardiac muscle. Skeletal muscle The skeletal muscle cells are cylindrical have several nuclei each, and appear striated. The striations are result of the precise arrangement of the contracting proteins within the cells (the text book essential of anatomy and physiology - Valerie C. Scanlon Tina Sanders). Most skeletal muscle in the body is under voluntary control. Smooth muscle Smooth muscle cells are call involuntary muscle. Most of smooth muscle cells arrange in sheets in the walls of the stomach digests food and force the liquefied food into small intestine. Smooth muscle contractions also propel the food along the intestinal tract. Cardiac muscle The cardiac muscles have one nucleus each and have faint striations. That is the form of the chambers of the heart. Cardiac muscle is voluntary that is meaning the contracts without conscious control. Also cardiac is only found in the walls of the heart. Nervous tissue Nervous tissue consists of nerve cells called neurons which are responding to affect for example pain or temperature. That affect of these cells is the result in tiny impulses. Neurons capable of generating and transmit these impulse from one region of the body to the other which helping control movements and other functions. There are many kinds of neurons but basically they all have the same structure such as cell body, axon, dendrites, synapse, and neurotransmitters REFERENCE Text book Human body system - Daniel D. Chiras Text book Essential anatomy and physiology - Valerie C. Scanlon Tina Scanders Resource from internet http://www.botany.uwc.ac.za/sci_ed/grade10/mammal/Epithelial.htm http://images.google.co.uk/images http://www.geocities.com/SoHo/Gallery/6412/ConnTiss.htm http://bioweb.uwlax.edu/APlab/Table_of_Contents/Lab_02/Areolar/areolar.html ...read more.

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