Scelta multipla
Pregnancy tests detect a hormone in a woman's urine that is present only when an embryo is developing in her uterus. This hormone is secreted by __________.
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44. Animal Reproduction
Animal Reproduction
Scelta multipla
After the menstrual period, which of the following hormones is the first to increase significantly every 28 days or so, initiating the ovarian cycle?
A
Progesterone
B
Estrogen
C
Luteinizing hormone (LH)
D
Human chorionic gonadotropin (hCG)
E
Follicle-stimulating hormone (FSH)
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Understand the ovarian cycle: The ovarian cycle is divided into the follicular phase, ovulation, and the luteal phase. The cycle begins with the follicular phase, which starts after menstruation.
Identify the role of hormones: Several hormones regulate the ovarian cycle, including Follicle-stimulating hormone (FSH), Luteinizing hormone (LH), estrogen, and progesterone.
Focus on the follicular phase: After menstruation, the follicular phase begins. During this phase, the body prepares for ovulation by maturing ovarian follicles.
Recognize the role of FSH: Follicle-stimulating hormone (FSH) is crucial in the early part of the follicular phase. It stimulates the growth of ovarian follicles, which are necessary for ovulation.
Conclude the hormone sequence: FSH is the first hormone to increase significantly after menstruation, initiating the ovarian cycle by promoting follicle development.
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