Towards the head or above.

Toward the middle/midline of the body:

Closer to the surface of the body

Front of the body

Back of the body:

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

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.

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.

The system responsible for transporting blood throughout the body:

The term distal