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Which hormone helps in development of the female sex organs and regulates the menstrual cycle?
Adrenaline
Thyroxin
Oestrogen
Testosterone
Oestrogen
Oestrogen (also spelled Estrogen) is the primary female sex hormone. It is responsible for the development of secondary female sexual characteristics and plays a central role in regulating the menstrual cycle.
Oestrogen (also spelled Estrogen) is the primary female sex hormone. It is responsible for the development of secondary female sexual characteristics and plays a central role in regulating the menstrual cycle.
Think of Oestrogen as the 'Project Manager' of the female reproductive system; it oversees the preparation and maintenance of the uterine environment, just as a project manager ensures all resources are ready before the main event (implantation).
O-E-S (Oestrogen - Estrogen - Sex hormone/Secondary characteristics).
During the menstrual cycle, oestrogen is secreted by the ovarian follicles. It stimulates the growth and proliferation of the uterine lining (endometrium) during the follicular phase, preparing the uterus for potential pregnancy. It also facilitates the development of female reproductive organs and secondary sexual traits during puberty.
Oestrogen is primarily produced by the ovaries.
It triggers the release of Luteinizing Hormone (LH) from the pituitary gland when levels are high, leading to ovulation.
It is essential for bone health and the maintenance of female reproductive tissues.
Progesterone is the partner hormone that maintains the uterine lining after ovulation.
Regulation of the menstrual cycle
Puberty development (breast development, etc.)
Reproductive health
Adrenaline: The 'fight-or-flight' hormone secreted by the adrenal glands.
Thyroxin: Hormone produced by the thyroid gland to regulate metabolism.
Testosterone: The primary male sex hormone responsible for male secondary sexual characteristics.
C is correct тАФ Oestrogen is the female sex hormone that controls the development of female sexual organs and manages the menstrual cycle.
Always differentiate between 'Oestrogen' (female/reproductive) and 'Testosterone' (male/reproductive) as they are the most common hormone questions in competitive biology.
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