Human Body Basics
Build basic health literacy with core anatomy concepts.
tendons
connect muscles to bones to allow movement
spinal cord
transmits nerve signals between the brain and body
adrenal glands
produce hormones that respond to stress
lymph nodes
filter substances and contain infection-fighting cells
trachea
serves as the main airway to the lungs
ligaments
connect bones to other bones at joints
spleen
filters old blood cells and helps the immune system
esophagus
transports food from the throat to the stomach
gallbladder
stores and concentrates bile from the liver
diaphragm
contracts to pull air into the lungs
thyroid
regulates metabolism and energy levels
pancreas
produces insulin and digestive enzymes
small intestine
absorbs nutrients from digested food
muscles
contract to produce movement and heat
bladder
stores urine before it leaves the body
large intestine
absorbs water and forms solid waste
stomach
breaks down food with acid and enzymes
liver
filters toxins and produces bile
kidneys
filter waste from blood to produce urine
skeleton
provides structural support and protects organs
skin
protects the body and regulates temperature
brain
directs the nervous system and many body functions
lungs
exchange oxygen and carbon dioxide
heart
pumps blood through the body