Human Body Stre and Composition

Anatomy

The study of the form and structure of an organism.

Physiology

Study of the processes of living organisms, including why and how they work.

Pathophysiology

Study of how disease occurs and the response of living organisms to disease processes.

Atoms

The most basic level of organization in the human body.

Molecules

Combination of two atoms; can be solid, liquid, or gas.

Cell

Basic unit of structure and function in all living things.

Cell membrane

Selectively permeable and helps maintain the cell’s shape.

Passive transport/diffusion

Particles moving through the cell membrane.

Osmosis

Water moving through the cell membrane

Electrolytes

Molecules or atoms that are positively charged ions (cations) and negatively charged ions (anions).

Dehydration

Condition that results from an insufficient amount of tissue fluid.

Edema

Condition that results from an excess amount of tissue fluid.

Epithelial tissue

Covers the surface of the body and lines cavities.

Connective tissue

Supporting fabric of organs and body parts, most abundant.

Nerve tissue

Controls and coordinates body activities by transmitting messages throughout the body.

Muscle tissue

Produces power and movement.

Fatty Tissue

Also called adipose tissue; functions include providing energy, insulation, and padding.

Organ

Composed of tissues working together.

System

Composed of organs functioning together for a common purpose.

Protoplasm

Semi-fluid substance of which all things are composed.

Dorsal cavity

Cavity in the BACK of the body

Ventral Cavity

Cavity in the FRONT of the body