Astimulus triggers an action potential by view available hint(s) a stimulus triggers an action potential by causing sodium ions to enter the neuron activating the sodium-potassium pump causing potassium ions to enter the neuron causing sodium ions to leak out of the neuron

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )

idk lol use google m8