Which of the following is NOT a function of the
cardiovascular system?
A. moving white blood cells to
infection sites
B. moving oxygen throughout the body
C. building immunity toward diseases
D. transporting nutrients throughout
the body

A. moving white blood cells to

infection sites

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.