Anatomy and Physiology

Biology

Quiz 4 :
The Tissue Level of Organization

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Quiz 4 :
The Tissue Level of Organization

Histology is the study of the structure of tissues and cells of organisms which is an important subject in biology and medicine. Histological research could be studied by tissue culture, where living cells are separated and preserved in an appropriate setting outside the body for different studies. The microscopic structures of the tissues are identified and envisioned by histological stains. Histology is usually performed by examining cells and tissues under a light microscope or electron microscope.

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The four basic types of tissues that the body structure contains are epithelial, connective, muscle, and nervous tissues. Epithelial tissue shields the entire surface of the body. It is composed of cells closely packed and extended in one or more layers. This tissue is specialized to form the lining of all interior and exterior body surfaces. Connective tissue is a type of tissue that supports, links, or divides different kinds of tissues and organs of the body. Everywhere in the body has connective tissue with the exception of the central nervous system. Muscle tissue is a mushy tissue that is found in animal bodies, and enables muscles to contract. Muscle tissue is developed throughout the embryonic development by a process known as myogenesis. Nervous tissue is consisted of cells known as neurons. It is the original constituent of the two parts of the nervous system; the CNS (central nervous system) consists of the brain and the spinal cord, and the PNS (peripheral nervous system) consists of the peripheral nervous, which regulates the activities in the body.

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