Human Body Systems matching

breaks down food small enough to diffuse into the bloodstream (absorption)

Digestive system

transports material to/from body cells (blood)

Circulatory system

oxygen in the lungs diffuses into the blood (alveoli --> capillaries)

Respiratory system

protects the body from pathogens that cause disease (ex. viruses, bacteria, fungi)

Immune system

controls metabolism, puberty, and blood sugar by sending hormones from glands to cells (SLOW communication)

Endocrine system

receives stimuli and responds by sending electrical messages along neurons (FAST communication)

Nervous system

gets rid of cellular waste products (carbon dioxide, water, urea)

Excretory system

supports the body, protects organs, produces red blood cells and site of muscle attachment

Skeletal system

voluntary movement of the body; helps to circulate blood and move food through digestive tract

Muscular system