Human Body Systems

Front

Cartilage

Back

Connective tissue that is more flexible than bone.

Front

T-Cells

Back

Identify pathogens and tell them apart using the pathogens' antigens.

Front

Peripheral Nervous System

Back

The part of the nervous system that includes nerves outside the brain and spinal cord.

Front

Smooth Muscles

Back

Muscles inside many internal organs that are involuntary and not under conscious control.

Front

Mucus and Cilia

Back

Trap and remove pathogens that enter the respiratory system.

Front

Heart

Back

The organ that pumps blood throughout the body.

Front

Skeletal Muscles

Back

Muscles that are attached to bones and are under voluntary control.

Front

Cardiac Muscle

Back

Muscle found only in the heart, responsible for pumping blood.

Front

Antibodies

Back

Proteins produced by B-cells that help destroy pathogens.

Front

Pathogens

Back

Microorganisms that can cause disease, such as bacteria and viruses.