What is tissue, an organ and an organ system? What is an example of each?

1 Answer
May 25, 2016

Answer:

A Tissue is a group of cells structurally joined to complete a common function.
An Organ is a group of tissues structurally joined to complete a common function.
An Organ System is a group of organs structurally joined to complete a common function.

Explanation:

A Tissue is a group of cells structurally joined to complete a common function.
Tissues include:
Epithelial
Connective
Muscular
Nervous

An Organ is a group of tissues structurally joined to complete a common function.
Organs Include:
Heart
Kidney
Liver
Brain
Biceps
Femur

An Organ System is a group of organs structurally joined to complete a common function.
Organ Systems include:
Integument
Skeletal
Muscular
Circulatory
Respiratory
Digestive
Nervous
Urinary
Reproductive
Endocrine

The Digestive System is an organ system that functions to process food ignored to be absorbed into the body as vitamins, minerals, nutrients and organic molecules.

The Digestive system includes the organs, the esophagus, the stomach, the liver, gall bladder, small intestine and large intestine.

The Stomach is composed of Dense Epithelial Tissue that forms an outer protective barrier, Muscle Tissue that churns and moves the food. The inner lining of the stomach includes folds of epithelial tissue that form secrete gastric juices.