Tissue Types

Epithelial, Connective, Muscle and Nervous

There are four types of tissues:

Epithelial Tissue

Epithelial tissue covers the whole surface of the body. It is made up of cells packed and ranged in one or more layers. This tissue is specialized to form the covering or lining of all internal and external body surfaces. There are three types of Epithelial tissues. These types are Squamous, Cuboidal and Columnar. Each cell is based and named after these three types.

Connective Tissue

Connective tissues are group of tissues in the body that maintain the form of the body and its organs and provides cohesion and internal support. The connective tissues include several types which can be bone, ligaments, tendons, cartilage and adipose tissue.

Picture: http://www.eoearth.org/view/article/156642/

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Muscle Tissue

Muscle tissue has a ability to relax and contrast and so bring about movement and mechanical work in various parts of the body. Skeletal Muscle is composed of thread-like myofibrils and sarcomeres that form a muscle fiber and are the basic unit of contraction.

Picture: http://www.builtlean.com/2013/09/17/muscles-grow/

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Nervous Tissue

Nervous Tissue is specialized to react to stimuli and to conduct impulses to various organs in the body which bring about a response to the stimulus. Nerve tissue,as in the brain, spinal cord and peripheral nerves that branch throughout the body, are all made up of specialized nerve cells.

Picture: http://www.botany.uwc.ac.za/sci_ed/grade10/mammal/nervous.htm

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We are giving a shout out this week to the one and only Epithelial Tissue. This tissue is best for the job because it keeps in all the things we need to survive! Epithelial tissue is the lining and support for all the organs we have in our body! Go Epithelial tissue! We appreciate all your hard work.