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Anatomy
Development
| Question | Answer |
|---|---|
| What is the process of pregnancy? | Fertilization to implantation to embryo development to fetal development to birth, 38 weeks later |
| What is developmental bio: | Student from fertilization of secondary oocyte to adult organism (embryology) |
| What is the embryonic period: | Fertilization to 8 week--embryo state |
| Fetal period: | Week nine to birth, fetus features |
| Prenatal development: | From fertilization to birth = embryo and fetal stages |
| Where are the ovaries located? | In superior pelvic cavity |
| Uterine tubles: | Route for sperm to get in or for secondary oocyte to get to uterus |
| Endometrium: | Lining of uterus shed during menstration |
| Myometrium: | Muscle later in endometrium |
| What happens in the first week of the embryonic period: | fertilization and blastocyst forms |
| What is fetilization? Where does it occur | haploid sperm and oocyte pronuclei combine to form diploid cell: This occurs 12-24 hours after ovulation in uterine tubes |
| How does the sperm get from vagina to oocyte? | Through the cervical canal to uterine tube (where oocyte is) by contractions of uterine walls |
| Capacitation: What does the femal tract do in this time? | Sperm gets excited and prepares its PM for merging with oocyte's PM: femal tract removes cholestrol, glycoprotiens from around head of sperm |
| Corona radiata and zona pellucida: | What sperm must penetrate to get to oocyte |
| What is the fusion of sperm to secondary ooctyte: | Syngamy |
| What is the cleaage of a zygote? | rapid cell growth in zygote, where cell number increases, but cell size decreases to still fit in zygote |
| What are the cells that reduce in size called? | Blastomers |
| Morula: | cells surrounded by zona pellucide that are orginal size as original zygote |
| What is the blastocys cavity? | Combination of uterine milk with space between blastomers |
| Inner cell mass becomes what? | Develops into embryo |
| Trophoblast: | Develops into fetal placenta |
| What happens on the fifth day of fertilization? | Blastocys hatches by enzyme eating through zona pellucida, which leads to implantation |
| What is implantation: | Blastocyst attaches to endometrium, which becomes enlarged and increases in blood vessels |
| Decidua: | Endometrium after iplantation, which detaches after birth of m,enstration |
| D. Basalis: | becomes maternal placenta |
| D. caps: | endometrium between embryo and uterine cavity |
| What are the two layers of trophoblast: | Syncgtiorophblast and cytotrophoblast: between inner cell matrix |
| Where does the blastocyst get buried? | In endometrium and inner 1/3 of myometrium |
| Amniotic cavity: | Small cavity in epiblast (ectoderm) |
| Amniotic fluid: | maternal blood, cushions baby and holds its waste |
| In a fetus, what holds oxygenated blood | the two veins of umblical cord |
| What hoolds deoxygenated blood? | artery |
| What can be used to age embryo? | somites (lines along spine of embryo) or the measurement from crown to rump of fetus. |
| Ectoderm forms: | Skin, nervous system |
| Mesoderm forms: | nervous supply, skelaton |
| Endoderm forms | Internal organs |
| Gastrolation: | tops cells move into to get three layers |
Created by:
talkglitter2486