Podcast
Questions and Answers
What is the primary role of Follicle-Stimulating Hormone (FSH) in the ovarian cycle?
What is the primary role of Follicle-Stimulating Hormone (FSH) in the ovarian cycle?
- Stimulating the follicle to enlarge. (correct)
- Stimulating the release of oestrogen from the ovary.
- Thickening the endometrium lining in preparation for implantation.
- Triggering ovulation by releasing the egg from the Graafian follicle.
Which hormone is secreted by the corpus luteum, and what is its primary function?
Which hormone is secreted by the corpus luteum, and what is its primary function?
- Follicle-Stimulating Hormone (FSH), to stimulate the follicle to enlarge.
- Oestrogen, to stimulate follicle development.
- Progesterone, to thicken the endometrium lining. (correct)
- Luteinizing Hormone (LH), to trigger ovulation.
What is the role of amniotic fluid in protecting the developing fetus?
What is the role of amniotic fluid in protecting the developing fetus?
- Producing antibodies to prevent infection.
- Removing carbon dioxide and waste products.
- Providing nutrients to the fetus.
- Acting as a shock absorber, preventing dehydration and regulating temperature. (correct)
Which of the following is NOT a function of the placenta?
Which of the following is NOT a function of the placenta?
Why might a fetus developing in the fallopian tube (ectopic pregnancy) not survive?
Why might a fetus developing in the fallopian tube (ectopic pregnancy) not survive?
What is the role of the umbilical vein?
What is the role of the umbilical vein?
During the ovarian cycle, what event is directly stimulated by the release of Luteinizing Hormone (LH) on day 14?
During the ovarian cycle, what event is directly stimulated by the release of Luteinizing Hormone (LH) on day 14?
What would be the immediate effect on the endometrium if the corpus luteum stopped secreting progesterone?
What would be the immediate effect on the endometrium if the corpus luteum stopped secreting progesterone?
What is the function of the umbilical artery?
What is the function of the umbilical artery?
In an ectopic pregnancy where the developing foetus is in the fallopian tube, what critical functions are compromised due to the absence of a properly formed placenta and amnion?
In an ectopic pregnancy where the developing foetus is in the fallopian tube, what critical functions are compromised due to the absence of a properly formed placenta and amnion?
Flashcards
What is FSH?
What is FSH?
Hormone that stimulates the follicle to enlarge in the ovarian cycle.
What is LH?
What is LH?
Hormone released on day 14 of the ovarian cycle, stimulating the Graafian Follicle.
What is corpus luteum?
What is corpus luteum?
Empty follicle that secretes progesterone, thickening the endometrium.
What is amniotic fluid?
What is amniotic fluid?
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What is the placenta?
What is the placenta?
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What is the umbilical artery?
What is the umbilical artery?
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What is the umbilical vein?
What is the umbilical vein?
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What is ectopic pregnancy?
What is ectopic pregnancy?
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Study Notes
Ovarian Cycle
- Follicle-stimulating hormone (FSH) from the pituitary gland stimulates the follicle to enlarge.
- An egg develops inside the follicle.
- The ovary releases oestrogen, which thickens the endometrium.
- Luteinizing hormone (LH) is released from the pituitary gland on day 14.
- LH stimulates the Graafian Follicle to release the egg from the ovary into the fallopian tube through ovulation.
- The empty follicle becomes a corpus luteum.
- The corpus luteum secretes progesterone, which thickens the endometrium lining, preparing for pregnancy.
Protection of the Developing Foetus
- Amniotic fluid acts as a shock absorber.
- Amniotic fluid prevents dehydration.
- Amniotic fluid regulates temperature.
Placenta
- It secretes progesterone to maintain pregnancy.
- It produces antibodies to prevent infection in the foetus.
- It provides oxygen to the foetus through the umbilical cord.
- It provides nutrients to the foetus through the umbilical cord.
- It removes wastes and carbon dioxide from the foetus through the umbilical cord.
Umbilical Cord
- The umbilical cord has an umbilical artery, which removes carbon dioxide and wastes.
- The umbilical cord has an umbilical vein to provide oxygen and nutrients.
Ectopic Pregnancy
- A developing foetus in the fallopian tube will not survive.
- No placenta will develop, so no progesterone will be secreted; therefore, no umbilical cord will be formed, resulting in no gaseous exchange, no nutrients and waste removal.
- No amnion and amniotic fluid will be created, resulting in no temperature regulation and no protection for the foetus.
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