Biological form of an organism

• Anatomy

• Physiology

Biological functions an organism performs

• Anatomy

• Physiology

2D

• Surface Area

• Volume

3D

• Surface Area

• Volume

In animals, the space between cells is filled with __, which links exchange surfaces to the body cells.

• Interstitial fluid

• Complex body plan

_ helps an animal living in a variable environment to maintain a relatively stable internal environment (homeostasis).

• Interstitial fluid

• Complex body plan

Most animals are composed of cells organized into __ that have different functions.

• tissues

• organs

• organ system

• pancreas

Tissues make up __.

• tissues

• organs

• organ system

• pancreas

Tissues make up organs, which together make an _.

• tissues

• organs

• organ system

• pancreas

Some organs, such as the _ belong to more than one organ system.

• tissues

• organs

• organ system

• pancreas