Questions and Answers
What is the function of the pellucid zone in oogenesis?
Nutrition and protection
How many chromosomes are present in a haploid oocyte?
23 chromosomes
What is the main function of the acrosome in a spermatozoon?
Assist in fertilization
What is the approximate number of follicles present in a female foetus?
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During the ovarian cycle, what happens if the oocyte is not fertilized?
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What is the main function of the corona radiata in oogenesis?
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What is the name of the structure that avoids polyspermy in oogenesis?
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What is the approximate number of follicles present at the beginning of puberty?
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During which phase of the ovarian cycle does the oocyte reach full maturity?
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What is the name of the structure from which the oocyte is extruded during ovulation?
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During which period is the maturation of tissues and organs and the growth of the body characterized?
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At the end of which period are the main organ systems established and the major features of the external body recognizable?
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In which edition of Langman's Medical Embryology would you find information about the external appearance by the 2nd month?
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Which book provides information about the rapid growth from the 9th week to birth?
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Which book is authored by Drake RL, Vogl AW, and Mitchell AWM?
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Which edition of Langman's Medical Embryology is the most recent?
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In which book would you find information authored by Schoenwolf GC, Bleyl SB, Brauer PR, and Francis-West PH?
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Which book is authored by Sadler TW and published in 2015?
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Which book is authored by Maria del Mar Ubero Martinez and affiliated with UCAM Universidad Católica de Murcia?
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Which book is not mentioned in the provided text as a reference source?
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Which process establishes three germ layers from primitive streak?
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During which phase does the human zygote pass through morula and blastocyst stages?
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Which layer differentiates into epiblast and hypoblast during formation of the bilaminar germ disc?
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Which process involves the formation of the neural tube from the neural plate?
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Which layer's derivatives include gastrointestinal and respiratory tracts?
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What is the process by which male and female gametes fuse?
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What is the process that describes abnormal implantation events?
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During which phase does the corpus luteum secrete hormones after the follicle ruptures?
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Which layer's derivatives include the central and peripheral nervous systems?
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What is the process by which the series of mitotic divisions occur from zygote to blastocyst?
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Study Notes
Human Embryonic Development
- Luteal phase: Corpus luteum secretes hormones after follicle ruptures
- Cleavage: Series of mitotic divisions from zygote to blastocyst
- Implantation: Human zygote passes through morula and blastocyst stages and begins implantation in uterine mucosa
- Bilaminar germ disc: Formation simultaneous to implantation; embryoblast differentiates into epiblast and hypoblast
- Abnormal implantation: Describes abnormal implantation events
- Gastrulation: Establishes three germ layers (endoderm, mesoderm, and ectoderm) from primitive streak
- Neurulation: Formation of neural tube from neural plate and differentiation of neural crest cells
- Ectoderm: Derivatives include gastrointestinal and respiratory tracts, urinary bladder, and more
- Endoderm: Derivatives include central and peripheral nervous systems, skin, pituitary, mammary and sweat glands
- Mesoderm: External features include somites and pharyngeal arches
- Gametogenesis: Process by which male and female gametes fuse
- Fertilization: Fusion of male and female gametes to form zygote
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