Tissue Types in the Human Body

Tissue Types in the merciful BodyA wander is a rangy collection of cubicles that conceptualize out a specific function together. Organisms argon made up of groups of contrary wavers. There are four principal(prenominal) types of threads, these are epithelial meander, heftiness tissue, connector tissue and Nervous tissue. These four tissue types separately have their own specific function vital the gracious consistency. Because of this, all(prenominal) type of tissue contain cells with specific organelles appropriate to the tissues function. The addition, removal, or adaption of cell features can impact greatly on a tissue, giving it the properties it postulate in order to accomplish its role in the body.epithelial tissue covers the whole of the bodys surface. Epithelial cells are packed closely together in one or more layers. Epithelial tissue specialises in practical application the bodys external and internal surfaces. The epithelial tissue located in the bodys intimate is cognize as endothelium. Epithelial tissue can be soften into two groups depending on the number of layers its composed of. When the epithelial tissue is single one cell thick its cognise as simple epithelium. yet if the epithelium tissues is two or more cells thick, such as the skin, its known as stratified epithelium.The important purpose of the epithelial cell is to comfort the surfaces it covers, in some cases however specialised epithelial tissues are up to(p) to submit part in absorption, excretion, secretion, diffusion, and cleaning. Epithelial tissue has the ability to amends itself this is due to the basement membrane which is a selectively permeable membrane. The epithelial tissues ability to repair itself is very useful as it comes under unremitting wear and tear because of its protective function. The repair process requires a grapple of protein to be produced, therefore a large rough endoplasmic reticulum is bespeak in order to synthesise large amounts of protein. The top layer of cells at bottom the epithelial tissue is often keratinised, making it stronger and more resistant to damage.The effect deep down the epithelial tissue cells are able to change mold depending on the overall shape the cell structure will take on. The nucleus does this in order for the epithelial cells to fit closely together. Epithelial cells can also contain appendages known as cilia, depending on the tissues function. Cilia are often found in epithelial tissue located in areas such as the throat. Cilia waft the mucus with in the throat, reducing prohibition and build up.Muscle tissueThere are three types of vigour tissue Smooth ponderousness tissue, skeletal vigour tissue and cardiac (heart) muscle tissue. The main function of muscle tissue is to create operation of, and in the body.A large of amount of energy is needed in spite of appearance the muscle tissue due to its function, nominal head. This energy comes from ATP which is made within the tissues cells. Because of this muscle cells contain a vast amount of mitochondria which is responsible for creating ATP. The large number of mitochondria means vast amounts of ATP can be produced and thus converted into kinetic energy needed for the muscle movement. Muscle tissues need to be sturdy and resilient due to the amount and type of movement carried out by the cell. This is accomplished by the cell membranes of the muscle cells, known as the sarcolemma. Smooth muscle tissue controls slow, involuntary movements. Skeletal muscle tissue is responsible for the movement of the various bones of the skeleton. Cardiac muscle tissue is found all on the hearts walls, it shows characteristics of both reflect muscle tissue and skeletal muscle tissue. Cardiac muscle tissue is responsible for the contraction of the atria and vesicles of the heart.Muscle tissue is strong due to its outside layer of collagen fibre, which covers the inner layer known as the plasma membrane. Muscle tissue ask to be able to contract to perform its function. To do this calcium is needed. The calcium needs to be stored within the cell and transferred when needed. The calcium needed is sheafd and kept in the cells sarcoplasmic reticulum this is an organelle equivalent to the SER. The cytoplasm of muscle tissues, called sarcolemma, is unique because it contains large particles of glycogen (storage of energy) and has a juicy concentration of calcium. This enables the muscle to contract efficientlyConnective TissueConnective tissue can be found within and throughout the human body, taking on many forms varying on its function. Whether its tendons and bones, or business line and skin.The main function of connective tissue is to support the human body and connect together different types of tissues. Connective tissue usually has disoriented cells throughout an extracellular ground substance. Connective tissues are composed of three main types of cells Fibroblasts, Macroph ages, and Mast cells.Fibroblasts are responsible for creating an extracellular matrix within the tissue, this gives the connective tissue elasticity needed so the tissue can stretch and therefore return to its original shape when needed. Collagen and proteins mostly make up the matrix providing strength to the tissues as well as flexibility. Macrophages are cells that come from rootage cells and clean anyForeign particles present through the process of phagocytosis. The terminal primary cell type is the Mast cell. The mast cell communicates with the bodys blood chemically, instructing it when to clot its blood, or inflame particular tissues. Mast cells provide the connective tissues with vital reparative properties that are needs when damage takes place.Nervous tissueNervous tissues are build of facial expression cells. The main function of the nervous tissue is relaying electrical impulses from one are in the body to an opposite, collecting, sending and managing information fr om area to area.The nervous tissue is made up of special nerve cells called neurones. Neurones transmit impulses at a very fast rate and are easily stimulated. The three main neurone types are Sensory neurone, Motor neurone and connector neurones. Nervous cells are built of a standard cell body, contain cell organelles such as nucleus, nucleolus, mitochondria, ribosomes, cell membrane and cytoplasm. The Golgi apparatus however is slightly different, not only can it process and package proteins it can also process and package neurotransmitters.At either end of the cell body are protrusions. mavin of these protrusions is known as the axone, this is a nerve fibre that attaches to the soma, carrying impulses away from it. The axon has a specially adapted membrane that can connect with the membrane of a targeted cell, letting impulses be carried into it. These connections are known as synapses. The dendrite which stems from the other end of the soma, works differently to the axon, pick ing up impulses from surrounding neurones and transmit it to its own soma.A material made of protein and fat known as the myelin sheath, acts as a sheath around the axon of a nerve cell. Its primary functions are to protect and insulate the nerve fibre, halt impulses leaving he cell from incorrect areas, and also increase the quicken of the impulses. Ranvier are regular gaps that are located along the sheath, these let nutrients and ravage enter and leave the neurone. They also let the impulses move along the neurone itself.These features are what give the nervous tissue the ability to send information to different areas of the body and coordinate bodily functions allowing the body to carry out its intend purpose