human body systems

digestive system, respiratory system, circulatory system

esophagus

tube that connects the mouth to the stomach.

stomach

where mechanical and chemical digestion takes place to break down food.

small intestines

where chemical digestion and absorption of nutrients takes place.

large intestines

where water is absorbed into the blood and waste is eliminated.

liver

produces bile.

gallbladder

stores bile.

pancreas

produces enzymes that break down starches, proteins, and fats.

nose

cleans, warms, and moistens the air.

pharynx

back of the throat where air passes from your nose to the trachea.

larynx

__**voice box**__ where the vocal cords vibrate when air passes of them.

trachea

__**windpipe**__ where air passes from the pharynx to the lungs.

lungs (respiratory system)

the main organ where air comes in and goes out.

diaphragm

muscle at the base of the lungs that expands and contracts when you inhale and exhale.

bronchi

passages that directs air into the lungs.

alveoli

tiny sacs where the gases carbon dioxide and oxygen are exchanged between the air and blood.

heart

pumps the blood to the rest of the body

arteries

takes blood __**away**__ from the heart.

veins

brings blood back to the heart.

lungs (circulatory system)

provides oxygen to the blood and removes carbon dioxide from the blood to breathe out.