Basic Anatomy and Physiology
Chapter 1. Cells, Tissue, Organs
Anatomy is the study of the parts of the body, their form, and the relationship they have to one another.
Physiology is the study of the functions of the body as a whole. Every living creature has the power to grow and reproduce, and its life is dependent on its ability to absorb food that it builds up into the framework of own body.
The basic unit of the human body is the cell. The body has about 100 trillion cells. There are many different types of cells found in the body. The cells of the human body differ in appearance. Masses of similar cells may be collected together to form tissues and special organs.
There is fatty tissue; bone is also a tissue, the hardest of the connective tissues. There are different types of muscle tissue, depending on function. The human body has a head, neck, torso, two arms, and two legs.
A system is a group of structures or organs that carry out an essential needed function of the individual. The functions of the body are closely connected and depend on each other.
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