Human Body Systems- Structures and Functions

Digestive System

Structures: Mouth, esophagus, stomach, small and large intestine
Function: breaks down food and absorbs nutrients.

Nervous System

Structures: brain, spinal cord, nerves
Function: detects information from the environment and controls body functions.

Skeletal System

Structures: bones, joints, ligaments, and cartilages
Function: supports and protects the body.

Muscular System

Structures: muscles, tendons
Function: enables movement of the body and internal organs.

Excretory/Urinary System

Structures: skin, lungs, kidneys, ureters, bladder, urethra
Function: removes wastes produced by cells

Respiratory System

Structures: trachea, lungs, bronchi, alveoli
Function: takes in oxygen and eliminates carbon dioxide

Endocrine System

Strucures: hypothalamus; pituitary, thyroid, parathyroid, and adreanal glands; pancreas, ovaries, testes, pineal gland, and thymus
Function: secrete hormones

Integumentary System

Structures: skin, hair, nails, sweat glands, and sebaceous (oil) glands
Function: protect underlying tissues, regulate body temperature, house sensory receptors, and synthesize Vitamin D

Reproductive System

Structures: testes, ovaries, prostate gland, penis, vagina, uterus, mammary glands...
Function: production o foffspring

Circulatory System

Structures: heart, blood vessels, blood
Function: Flow of blood and nutrients throughout the body