Podcast
Questions and Answers
What is the primary role of the LH surge in the ovulation process?
What is the primary role of the LH surge in the ovulation process?
- It deselects primary follicles.
- It stimulates the proliferation of thecal cells.
- It inhibits the release of oocytes from the follicles.
- It triggers the release of the mature egg from the dominant follicle. (correct)
What initiates the LH surge during the menstrual cycle?
What initiates the LH surge during the menstrual cycle?
- High levels of estradiol produced by the dominant follicle. (correct)
- Low levels of estradiol produced by the follicles.
- Luteal phase progesterone production.
- Inhibitory signals from the corpus luteum.
What happens to the corpus luteum after ovulation?
What happens to the corpus luteum after ovulation?
- It becomes the primary follicle.
- It continues to produce progesterone. (correct)
- It dissolves immediately.
- It transforms and increases in size.
Which hormone acts on granulosa cells within the follicle?
Which hormone acts on granulosa cells within the follicle?
During the LH surge, what impact does LH have on thecal cells?
During the LH surge, what impact does LH have on thecal cells?
Which of the following cells are directly involved in the production of estrogens?
Which of the following cells are directly involved in the production of estrogens?
What is the primary function of androstenedione, produced by theca cells?
What is the primary function of androstenedione, produced by theca cells?
What is the correct sequence of events that occurs during the development of a follicle?
What is the correct sequence of events that occurs during the development of a follicle?
Which of the following hormones is directly involved in the process of spermatogenesis?
Which of the following hormones is directly involved in the process of spermatogenesis?
Based on the provided thyroid function test results (High TSH, low T4 and T3), what is the most appropriate diagnosis?
Based on the provided thyroid function test results (High TSH, low T4 and T3), what is the most appropriate diagnosis?
Flashcards
LH Surge
LH Surge
A sharp increase in luteinizing hormone that triggers ovulation.
Positive Feedback Loop
Positive Feedback Loop
A process where high estradiol levels stimulate LH and FSH surge.
Dominant Follicle
Dominant Follicle
The primary follicle that matures and releases the egg during ovulation.
Role of Thecal Cells
Role of Thecal Cells
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Corpus Luteum Formation
Corpus Luteum Formation
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Theca Cells
Theca Cells
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Granulosa Cells
Granulosa Cells
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Follicles Composition
Follicles Composition
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Endometrium
Endometrium
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Primary Hypothyroidism
Primary Hypothyroidism
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Study Notes
Ovulation Triggered by LH Surge
- LH surge, not deselection, triggers oocyte release from dominant follicle.
- High levels of estradiol from the dominant follicle create a positive feedback loop, stimulating a surge in LH and FSH.
- The surge in LH is the primary trigger for ovulation.
- LH acts on thecal cells to produce androgens, not inhibit their proliferation.
- FSH acts on granulosa cells within the follicle.
- Ovulation leads to corpus luteum formation.
Follicle Structure and Function
- Follicles contain granulosa cells, theca cells, and an oocyte.
- Follicles are located in the ovaries, not the endometrium.
- Endometrium lines the uterus and changes during the menstrual cycle.
Hormone Roles in Spermatogenesis
- Testosterone (T) plays a crucial role in sperm maturation.
- Inhibin negatively regulates FSH and LH.
- Androgen-Binding Protein (ABP) enhances testosterone's effectiveness in the tubules.
- FSH stimulates Sertoli cells to produce ABP and provide nutrients for sperm production.
Thyroid Function Tests (TFTs) Interpretation
- High TSH, low T4 and T3 indicate primary hypothyroidism.
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