Biology

Biology describes the physiological mechanisms and systems of individuals and kinds.

Physiology

Compositions

Chemical

Mechanical

Ethereal

Appendages

Forms

Flaccid

A flaccid appendage lacks structural bracing, allowing it to move freely.

Rigid

A rigid appendage contains one or more structural features that limit its lateral movement. Rigid appendages may also contain joints or separators, allowing it to bend about its joints.

Prehensile

A prehensile appendage may be either rigid or flaccid and features structures that apply forces to the appendage, allowing it to move in various ways.

Cavities

A cavity is any part of the body that is interior while being accessible from the exterior.

Concepts

• Metabolism
• Reproduction
• Senses
• Vocalization