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Questions and Answers
What controls the sexual cycles in females at puberty?
What controls the sexual cycles in females at puberty?
- Gonadotropin-releasing hormone (GnRH) (correct)
- Luteinizing hormone (LH)
- Follicle-stimulating hormone (FSH)
- Pituitary gland
What stimulates and controls cyclic changes in the ovary?
What stimulates and controls cyclic changes in the ovary?
- Anterior lobe of the pituitary gland
- Hypothalamus
- Gonadotropin-releasing hormone (GnRH)
- Follicle-stimulating hormone (FSH) and luteinizing hormone (LH) (correct)
What happens to most follicles under normal conditions?
What happens to most follicles under normal conditions?
- They all reach full maturity
- They become atretic without degenerating
- They degenerate without reaching full maturity (correct)
- They remain in the primary follicle stage
What happens when a follicle becomes atretic?
What happens when a follicle becomes atretic?
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What stimulates maturation of follicular cells surrounding the oocyte?
What stimulates maturation of follicular cells surrounding the oocyte?
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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.
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