Hormones exert an effect only on a gland or organ that has a where that specific hormone can bind.

there’s no image attached but i can if you want: )

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.