Organ Systems

Cardiovascular System

Includes the heart, blood vessels, and blood; transports chemicals and heat, provides defense, regulates fluid, electrolyte and pH balance.

Digestive System

Comprises organs like the mouth, stomach, and intestines; simplifies food for nutrient absorption and eliminates waste.

Endocrine System

Consists of glands like the pituitary and thyroid; produces hormones for internal communication and coordination.

Integumentary System

Made up of skin, hair, and nails; protects the body, regulates temperature, and detects stimuli.

Lymphoid System

Includes the spleen and lymph nodes; protects the body from foreign particles and cells, transports lipids, and returns excess fluid to blood.

Muscular System

Composed of skeletal muscles; enables body movement, maintains posture, and produces heat.

Nervous System

Includes the brain and nerves; detects stimuli, processes sensory information, and coordinates motor responses.

Reproductive System (Male)

Comprises testes and prostate; produces sex cells and hormones for fertility.

Reproductive System (Female)

Includes ovaries and uterus; produces sex cells, hormones, and supports fetal development.

Respiratory System

Consists of lungs and trachea; exchanges gases with blood and regulates blood pH.

Skeletal System

Includes bones and cartilages; supports and protects body parts and produces blood cells.

Urinary System

Composed of kidneys and bladder; maintains electrolyte balance and eliminates waste.