11 organ systems

Integumentary System

Includes skin, hair, and fingernails; functions for protection, temperature regulation, sensation, and vitamin D synthesis.

Skeletal System

Comprised of bones, joints, and ligaments; provides structural support, protects vital organs, creates blood cells, and stores minerals.

Muscular System

Contains skeletal muscles and tendons; responsible for movement, posture, and heat production.

Nervous System

Consists of the brain, spinal cord, nerves, and sensory organs; facilitates fast communication and coordination of body functions.

Endocrine System

Includes glands such as the hypothalamus and pituitary; regulates body functions through hormone secretion.

Cardiovascular System

Involves the heart and blood vessels; transports oxygen, carbon dioxide, nutrients, and hormones throughout the body.

Lymphatic & Immune System

Comprises lymph nodes and vessels; functions in fluid drainage, lipid absorption, and immune response.

Respiratory System

Involves the lungs and airways; responsible for gas exchange, bringing in oxygen and expelling carbon dioxide.

Digestive System

Composed of organs like the stomach and intestines; functions to digest food, absorb nutrients, and eliminate waste.

Urinary System

Includes kidneys, ureters, bladder, and urethra; removes waste from blood and regulates water and electrolyte levels.

Male Reproductive System

Includes testes and associated glands; produces and transports sperm and hormones like testosterone.

Female Reproductive System

Comprises ovaries and uterus; produces egg cells, nurtures fetus, and secretes hormones like estrogen and progesterone.