Tissue types

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Biology Assignment 1.

Tissue types and their properties!

Body tissues!

The four core types of tissues in the body are; epithelial, connective, muscle and nervous. Each is designed for specific functions.

Epithelial Tissues!

Epithelial tissues are spread out all over the body. They cover all surfaces and also line body cavities and hollow organs. These tissues are also the major tissue in glands. Epithelial tissues have many functions including secretion, protection, excretion, diffusion, absorption, filtration and sensory reception.
Epithelial tissues have one surface free which is not connected to other cells; this is because the epithelial cells form linings and surfaces. The opposite side of the tissue is attached to connective tissue. Between these two surfaces are cells packed tightly together.
The shapes that the epithelial cells may be are: - sqaumous, cubodial or columnar they can also be arranged in either singular or multiple layers.

Simple cuboidal – found in glandular tissue and kidney tubules.
Simple columnar – line stomach and intestines.
Pseudostratified columnar – lines some of the respiratory tract and some of the male reproductive tract.

Muscle Tissue.

Muscle tissues include cells which boast the ability to shorten or contract to permit body parts to move. This type of cellular tissue also has a vast supply of blood vessels. Like the epithelial tissue the muscle tissue is also surrounded by connective tissue.
Muscle tissue contains con...

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