The event shown at time X occurs as a result of A) the secretion of oxytocin while breast feeding.

B) a steady decline in FSH, LH, estrogen and progesterone.

C) O the release of large amounts of LH and FSH.

D) the secretion of human chorionic gonadotropin (HCG).

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.