What are the initial diploid cells involved in spermatogenesis called?

What is the function of the ductus venosus in fetal circulation?

Which hormone assists in the synthesis of vitamin D?

What effect does progesterone have on the uterus during the luteal phase?

What is the primary function of the umbilical cord?

Which hormone is dominant during the secretory phase of the uterine cycle?

Which part of the sperm contains the genetic material?

Which phase of mitosis involves the condensation of chromatin into chromosomes?

Which structure connects the testes to the epididymis?

During which phase of mitosis do chromosomes align along the metaphase plate?