What system in the human body works to maintain homeostasis?

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.

All other things being equal the size of a population will decrease if

If a young male's body is just beginning the process of producing sperm, when is it likely that he would ejaculate mature, viable sperm"