Digestive System
Function of digestive system
Breaks down food
function of air sacs
diffusion of gases
a nerve cell
neuron
fluid that circulates materials
blood
smallest unit of life in your body
cell
function of the mouth
break down food by chewing
gas you inhale
oxygen
electrical signal
impulse
pumps blood
heart
one cell
unicellular
function of the stomach
Stores, mixes, and breaks down food with enzymes
gas you exhale
carbon dioxide
space between two neurons
synapse
blood vessel that carries blood away from the heart
arteries
many cells
multicellular
function of small intestine
Finishes chemical breakdown of food
how do you breathe in gas?
by your nose
chemical messenger
neurotransmitter
blood vessel that has valves
veins
molecule that breaks down food in your body
enzyme
function of villi
Allows nutrients to diffuse into the blood
what two structures have alveoli
lungs
molecule neurotransmitter fits with
receptor molecule
function of the circulatory system
transports materials by blood
site of cellular respiration
mitochondria