The plane that divides the body into anterior and posterior parts:

Toward the middle/midline of the body:

AWAY from the middle/midline of the body:

Closer to the surface of the body

Front of the body

Back of the body:

Body parts close to the point of reference or close to the origin:

Body parts farther from the point of reference or point of origin:

Towards the feet or lower:

Farther into the body, away from the surface:

Feedback that tends to cause the level of a variable to change in the same direction as an initial change.

Net effect is that the output of the system shuts off the original stimulus or reduces its intensity.

A state of body equilibrium or stable internal environment of the body.

The living human which represents the sum total of all its organ systems working together to maintain life.

A group of organs that work together to perform a vital body function.

A part of the body formed of two or more tissues and adapted to carry out a specific function.

A group of similar cells.

Basic structural and functional unit of the body.

Study of the function of the body.

Study of the structures of the body