Identify the major structures of the male reproductive system that produce the different components of semen.

The answers are 1, 4, 5, and 6

answer; i believe the correct answer is (sporophyte);

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.