Systems of The Human Body

What are the 11 systems of the human body?

integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, lymphatic/immune, respiratory, digestive, urinary, and reproductive

Integumentary system components

skin, hair, fingernails, sweat glands

Functions of the integumentary system

protects body, regulates body temperature, eliminates some waste, detects different sensations

Skeletal system components

bones and joints

Functions of the skeletal system

protects body, provides surface area for muscle attachments, aids body movement, houses cells that produce blood cells

Muscular system components

skeletal muscle tissue

Functions of the muscular system

aids in body movement, maintains posture, produces heat

Nervous system components

brain, spinal cord, nerves, special sense organs

Functions of the nervous system

detects changes within the body’s environment, generates nerve impulses to regulate body activities

Endocrine system components

Hormones, hormone-producing glands

Function of the endocrine system

regulates body activities by releasing hormones

Cardiovascular system components

blood, heart, blood vessels

Functions of the cardiovascular system

heart pumps blood, blood carries oxygen and nutrients to cells

Lymphatic system components

lymphatic fluid, lymphatic vessels, spleen, lymph nodes, tonsils

Functions of the lymphatic system

returns proteins and fluid to blood, carries lipids from gastro tract to blood, contains B cells and T cells that protect against disease-causing microbes

Respiratory system components

lungs, throat, voice box, windpipe, bronchial tubes

Functions of the respiratory system

transfers oxygen from the air to the blood, uses air from the lungs through vocal cords to produce sounds

Digestive system components

mouth, esophagus, stomach, small and large intestines

Functions of the digestive system

breakdown food, absorb nutrients, eliminate solid waste

Urinary system components

kidneys, ureters, urinary bladder, urethra

Functions of the urinary system

produce, store, and eliminate urine, eliminates waste, helps maintain the acid-base balance of body fluids, maintains body’s mineral balance

Reproductive system components

testes, ovaries, and associated organs

Functions of the reproductive system

produce gametes (sperm) that unite to form a new organism