What is filled with a enzymes that can break down substances in cells to be used later

answer: i say it foxes

explanation:

you need to give us the answer options to for me to offical decide.

answer: c.

explanation:

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

thats not a question