The Eleven Body Systems and Their Functions

Skeletal System: Functions

Support, protection of vital organs, movement, mineral storage, and blood cell production

Skeletal System: Components

Bones, cartilage, ligaments, joints

Skeletal System

Muscular System: Functions

Movement, posture, heat production

Muscular System: Components

Skeletal muscle, smooth muscle, cardiac muscle

Muscular System

Nervous System: Functions

Rapid communication, sensation, integration, and control of body activites

Nervous System: Components

Brain, spinal cord, nerves, sensory receptors

Nervous System

Endocrine System: Functions

Long-term regulation of growth, metabolism, reproduction, and homeostasis through hormones

Endocrine Systems: Major glands

Hypothalamus, pituitary, pineals, thyroid, parathyroid, thymus, adrenal glands, pancreas, ovaries, testes

Endocrine System

Cardiovascular (Circulatory) System: Functions

Transport of oxygen, nutrients, hormones, wastes, and heat

Cardiovascular (Circulatory) System: Components

Heart, blood, blood vessels

Cardiovascular System

Lymphatic (Immune) System: Functions

Defense against pathogens, fluid balance, absorption of fats

Lymphatic (Immune) System: Components

Lymphatic vessels, lymph nodes, thymus, spleen

Lymphatic System

Respiratory System: Functions

Gas exchange, acid-base balance, vocalization

Respiratory System: Components

Nasal cavitities, sinuses, trachea, lungs, diaphram

Respiratory System

Digestive System: Functions

Ingestion, digestion, absorption, elimination

Digestive System: Components

Mouth, esophagus, stomach, intestines, liver, gallbladder, pancreas

Digestive System

Urinary System: Functions

Elimination of nitrogenous wastes, regulation of blood volume, and composition

Urinary System: Components

Kidneys, ureters, urinary bladder, urethra

Urinary System

Integumentary System: Functions

Protection, temperature regulation, sensation, vitamin D synthesis

Integumentary System: Components

Skin, hair, nails, sweat glands

Integumentary System

Reproductive System: Functions

Production of gametes and sex hormones

Reproductive System: Major organs

• Female: Ovaries, uterus, vagina, mammary glands

• Males: Testes, penis, prostate gland

Reproductive System