Examlex
Continental interiors where the temperature can fluctuate greatly between hot summers and cold winters are in the ____ climate zone.
Blood Vessels
Blood vessels are tubular structures carrying blood throughout the body, including arteries, veins, and capillaries.
Human Chorionic Gonadotropin
Human chorionic gonadotropin is a hormone produced during pregnancy that supports the normal development of an egg in a woman's ovary, and stimulates the release of the egg during ovulation.
Estrogen
A group of steroid hormones that promote the development and maintenance of female characteristics in the human body.
Progesterone
A substance secreted by the ovaries, placenta, and adrenal glands, responsible for controlling the menstrual cycle and maintaining pregnancy.
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