5 Questions
What controls the sexual cycles in females at puberty?
Gonadotropin-releasing hormone (GnRH)
What stimulates and controls cyclic changes in the ovary?
Follicle-stimulating hormone (FSH) and luteinizing hormone (LH)
What happens to most follicles under normal conditions?
They degenerate without reaching full maturity
What happens when a follicle becomes atretic?
The oocyte and surrounding follicular cells degenerate and are replaced by connective tissue
What stimulates maturation of follicular cells surrounding the oocyte?
$FSH$
Study Notes
Puberty and Ovarian Cycle
- At puberty, the hypothalamus controls the sexual cycles in females by regulating the release of hormones that stimulate the ovaries.
- The hypothalamic-pituitary-ovarian axis stimulates and controls cyclic changes in the ovary, involving the release of hormones such as gonadotropin-releasing hormone (GnRH), follicle-stimulating hormone (FSH), and luteinizing hormone (LH).
Follicular Development
- Under normal conditions, most follicles undergo atresia, a process of degeneration, before reaching maturity.
- When a follicle becomes atretic, it degenerates and is removed, allowing other follicles to continue developing.
Follicular Maturation
- The hormone FSH stimulates the maturation of follicular cells surrounding the oocyte, promoting follicular growth and development.
Test your knowledge about the female reproductive system and the hormonal control of the menstrual cycle. Learn about the role of the hypothalamus, pituitary gland, and ovarian cycle in regulating female fertility.
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