Body systems overview

Body System Major Organs Function Integumentary System Skin, hair follicles, sebaceous and sweat glands, nails, and sensory receptors   1st barrier to disease and the environment; controls body temperature, keeps body fluids inside body

Defense against infection and disease Immune/ Lymphatic System Lymph nodes, white blood cells   Defense against infection and disease

Intake of air and gas exchange Respiratory System Lungs, nasal cavities, sinuses, pharynx, larynx, trachea, bronchi   Intake of air and gas exchange

Internal transport of cells and dissolved materials Circulatory System Heart, blood vessels, blood, veins, arteries, capillaries   Internal transport of cells and dissolved materials

Digestive System Mouth, teeth, tongue, salivary glands, pharynx, esophagus, stomach, intestines, liver, gall bladder, and pancreas   Intake of food, mechanical and chemical breakdown of food, absorption of building blocks of food and formation of solid waste

Kidneys, ureters, urinary bladder, and urethra Excretory System Kidneys, ureters, urinary bladder, and urethra   Filter blood and remove nitrogenous wastes from blood and maintain water, salt, acid/base, and ion balance

Bones, cartilage, joints Skeletal System Bones, cartilage, joints   Support and protection of soft tissues, mineral storage, and blood production

Provide movement, produce heat, and support skeletal position Muscular System Smooth, skeletal, and cardiac muscle tissues, tendons   Provide movement, produce heat, and support skeletal position

Endocrine System Glands (pineal, pituitary, thyroid, parathyroid, thymus, adrenal glands, pancreas, testes, and ovaries   Uses hormones to regulate body temperature, metabolism, development, and reproduction; maintains homeostasis

Testes, penis (male); ovaries, uterus, breasts (female) Reproductive System Testes, penis (male); ovaries, uterus, breasts (female)   Produces sex cells to create children, controls female and male characteristics

Brain, spinal cord, nerves, sense organs Nervous System   Brain, spinal cord, nerves, sense organs Processes information, provides short-term control over activities of organ systems, and directs immediate responses to stimuli