The autonomic nervous system is a subdivision of the nervous system.

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b

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 : )