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Anatomy 9
Development
| Question | Answer |
|---|---|
| What prepares the secondary oocyte for release? | Ovary |
| What happens after sperm is ready for prom and oogensis is over? | You end up with fertilization |
| What is fertilization? Where does it occur? When does it occur? | Occurs within uterine tube 12-24 hrs after ovlulation |
| What is the cleavage? When does it occur? | 30 hours after fertilization, it creates the zygote |
| What is a zygote? | When the diploid number in the cell is renewed after pro-nuclei are combined |
| Another term for zygote? | Stem cell |
| What is the initial process to create the zygote? | Ovulation, fertilization, and then combinig pro-nuclei to get zygote |
| What is cleavage? | (blank) |
| What are follicles? Where can they be found? | multi-layered sac of cells that Protects ovum...found on the ovary |
| What is the zona pelcucida and corona radiate? | Protective layer around secondary oocyte that must be penetrated for fertilization: The corona is far outside, zona is second layer penetrated |
| What happens at fertilization? | Return to diploid number |
| When and where does fertilization occur? | 12-24 after ovulation in uterine tube |
| What does the inner cell mass? | What develops into the embryo |
| What is the trophoblast? | the placenta |
| Where does cleavage occur? | oviduct |
| What is implantation and where does it occur? | When the blastocyst attaches to endometrium in uterus |
| What is the endometriuM? | Inner ining of uterus |
| What is gastrulation and where does it occur? | When the top cells in blastocyst go into the internal cavity to make room for a third layer |
| What are the three germ layers? | Ecto, meso, endo |
| What is ecto? | Nervous system and skin |
| Meso? | skelatal, muscle |
| endo, | Internal organs |
| What are two methods of aging an embryo? | Something the someites or the crown to rump length |
| When is the time period of an embryo? | fertilization-8th week |
| What is a fetus time period? | 8th week to birth |
| What is the importance of the placenta? | PEP-production exchange, protection |
| Contents of umblicibal cord? | Veins in wharton's jelly |
| Where is the amnion located? | Roof of of epiblast, to become the protective cavity |
| Where is the yolk sac located? What is its function? | The blastocyst cavity; it functions to be guy, |
| What is the allantois? | Early blood vesser and bladder for cellular membrane |
| What is the chorion? | (blank) |
| What is chorion? | Surrounds embryo and yolk sac |
| What are the top three teratogens? | Radiation, infection, metabolic imbalance |
| What is the neural tube? | wall, rudiment |
| What are the phyrangial arches? | Head and neck region |