Unit 5

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P2: Outline the four main tissue types such as Epithelial, connective, muscle, nervous. Tissues are groups of cells, which are placed together to achieve a common function. There are four main types of tissue: Epithelial, connective, muscle and nervous. Most of these tissues are found in our bodies, however the epithelial tissue is covered all over the surfaces of the body. Epithelial tissue This tissue covers the whole surface of the body and is specialised to form the covering or lining of all internal and external body surfaces. The bottom layers of the cells are attached to the basement membrane for support and connection. Endothelium is an epithelial tissue that occurs on surfaces on the interior of the body. There are nerve…show more content…
It doesn’t contain blood vessel and is nourished by the diffusion from the bone. Adipose, is another term for fatty tissue. It is common for under the skin and around the organs such as the heart, kidney and part of the digestive tract. Muscle tissue These muscle tissue cells specialised to contract and move parts of the body. It is also capable of responding to stimuli. There are three types of muscle in the body such as: skeletal, cardiac and smooth. Each muscle is created of muscle fibers that are capable of contracting and returning back to original state-relaxation. Contraction causes movement of the skeleton, soft tissue, blood or specific material. Skeletal muscle is attached to the bones of the skeleton. Some facial muscles are attached to the skin. They have direct control over them through nervous impulses from our brain sending messages to the muscle. Contractions can vary to produce fast, powerful movements. These muscles also have the ability to stretch and contract to return to original shape. Cardiac muscles are found in the chambers of the heart such as the atria and ventricles. It is under the control of the automatic nervous system; however, even without nervous input contractions can occur. It is completely different to all the other muscles. Smooth muscles are also known as involuntary due to our inability to control its movement. This muscle is usually found in the walls of hollow organs

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