Podcast
Questions and Answers
How is the need to prolong luteal life accomplished in primates and humans?
How is the need to prolong luteal life accomplished in primates and humans?
- By secreting positive luteotropic factors
- By producing estrogen in mid-gestation
- By producing human chorionic gonadotropin (hCG) (correct)
- By releasing interferon-Ï„ (IFNÏ„)
What is the aim of the cortical reaction in fertilization?
What is the aim of the cortical reaction in fertilization?
- To release interferon-Ï„ (IFNÏ„)
- To prevent polyspermy and activate egg metabolism (correct)
- To form the ovum and 2nd polar body
- To trigger the second meiotic division
What triggers the secondary oocyte to resume and complete its second meiotic division?
What triggers the secondary oocyte to resume and complete its second meiotic division?
- Entry of the sperm nucleus into the cytoplasm of the secondary oocyte (correct)
- Cortical reaction
- Release of interferon-Ï„ (IFNÏ„)
- Intracellular increase in Ca2+ ion concentration
What factor helps extend luteal life by producing estrogens in swine?
What factor helps extend luteal life by producing estrogens in swine?
What does the zygote transform into after undergoing mitotic divisions and modifications?
What does the zygote transform into after undergoing mitotic divisions and modifications?
What is the main function of the ZP3 molecules in the zona pellucida?
What is the main function of the ZP3 molecules in the zona pellucida?
What is the role of the acrosomal enzymes released during the acrosomal reaction?
What is the role of the acrosomal enzymes released during the acrosomal reaction?
How is the fusion between sperm and egg mediated?
How is the fusion between sperm and egg mediated?
Where is the perivitelline space located?
Where is the perivitelline space located?
What triggers the acrosomal reaction in sperm?
What triggers the acrosomal reaction in sperm?
What is the main function of ZP3 molecules in the zona pellucida?
What is the main function of ZP3 molecules in the zona pellucida?
What facilitates the fusion between the sperm and egg membranes?
What facilitates the fusion between the sperm and egg membranes?
What is the role of acrosomal enzymes released during the acrosomal reaction?
What is the role of acrosomal enzymes released during the acrosomal reaction?
Where is the perivitelline space located in relation to the oocyte?
Where is the perivitelline space located in relation to the oocyte?
What triggers the acrosomal reaction in sperm?
What triggers the acrosomal reaction in sperm?
What is the purpose of the cortical reaction during fertilization?
What is the purpose of the cortical reaction during fertilization?
What triggers the secondary oocyte to resume and complete its second meiotic division?
What triggers the secondary oocyte to resume and complete its second meiotic division?
How is the need to prolong luteal life accomplished in swine?
How is the need to prolong luteal life accomplished in swine?
What does the zygote transform into after undergoing mitotic divisions and modifications?
What does the zygote transform into after undergoing mitotic divisions and modifications?
What is the role of interferon-Ï„ (IFNÏ„) in extending luteal life in cow and ewe?
What is the role of interferon-Ï„ (IFNÏ„) in extending luteal life in cow and ewe?
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