Hypoblast - Samenvattingen, Notities en Examens

The best description for the spatial relationship between the wrist and the elbow is - ANSWER-the wrist is distal to the elbow Which of the following best described standard anatomical position? - ANSWER-lower limbs together with feet directed anteriorly Which of the following best describes a regional anatomy approach? - ANSWER-structural relationships of parts of the body The ____ passes through the body at right angles to the median and frontal planes, dividing the body into superior...

cmmb midtermRTK pathway and FGFs - correct answer Ligand, RTK, GEF, RAS, RAF, MEK,ERK, TF, Transcription morula, blastula, gastrula blastomere - correct answer morula: cleavage stage embryo, no cavityblastula: cleavage stage, when there is a cavity in the embryogastrula: embryo undergoing gastrulationneurula: embryo as neural tube is formingblastomere: any cell of a cleavage stage embryo cleavage - correct answer rapid cell divisions divide the zygote cytoplasm into many smaller cells w...

A 43-year-old pregnant woman at 16 weeks of gestation comes to her OB/GYN for a normal examination. During routine blood tests, her serum a-fetoprotein (AFP) concentration is markedly decreased for her gestational age. Which abnormality or condition will the physician need to rule out based upon these low AFP levels? (A) Down syndrome (B) Spina bifi da (C) Anencephaly (D) Multifetal pregnancy (E) Hepatocellular carcinoma (A) Down syndrome A 32-year-old pregnant woman at 30 weeks of...

comparative morphology looking at anatomical characters (for example eyes, lungs, bones, etc) and seeing what is shared and what differs in what ways can anatomical characters differ? 1) function 2) form 3) genetic aspects (evolutionary history) homologous structures structures that share a common ancestry (ex: forelimbs in tetrapods) analogous structures structures that share a similar (and precise) function (ex: bat wings + bird wings, woodpecker tongue + aye aye f...

what is embryology? the study of prenatal development Embryo is what time period of development? 2nd to 8th week development Fetus is what time period of development? 9th week to birth what is development? maturation, becoming older what is growth? increase in weight or special dimension (increase in cell numbers, cell size or cell productions) facial development beings when? 4th week what is congenital malformation? birth defects congeni...

First Aid USMLE Step 1- Reproductive Organ Systems + Embryology 2023 Update Sonic Hedgehog Gene - ANS-Produced @ base of limbs in zone of polarizing activity Involved in patterning along anterior/posterior axis *SUMMARY: Anterior/posterior pattern* Wnt-7 Gene - ANS-Produced @ apical ectodermal ridge (thickened ectoderm @ distal end of each developing limb) Necessary for organization along dorsal/ventral axis *SUMMARY: Dorsal/ventral pattern* FGF Gene - ANS-Produced @ apical ectoderma...

Chapter 03: Prenatal Development MULTIPLE CHOICE 1. The folding of the embryo during prenatal development causes _____ to be on the _____. a. endoderm; inside of the embryo b. ectoderm; inside of endoderm c. endoderm; outside of the mesoderm d. mesoderm; outside of the ectoderm ANS: A After folding of the disc, the endoderm lies inside the ectoderm, with mesoderm filling in the areas between these two layers. This movement of the embryonic cell layers forms one long, hollow ...

Medical Embryology Exam Questions With Verified Solutions Cleavage - answerthe process where a zygote divides into multiple cells blastomere - answerthe cells that the zygote divides into via cleavage morula - answerthis is what the zygote becomes after about 4 days, 16 + cells blastocyst - answerwhat the morula becomes when the blastomeres rearrange into masses when does implantation take place? - answer~day 6. fully implated at ~day 10 embryoblast - answerthe inner cell mass of the blas...

Embryology Test Questions| answers updated Sperm cannot fertilize an egg until they A) Lose their acrosome. B) Undergo capacitation. C) Are activated by nurse cells of the vagina. D) Are in the vagina for 3 days. - B All of the following are true during oocyte activation, except that A) Other sperm are prohibited from fertilizing the egg. B) The ovum completes meiosis II. C) The metabolic rate of the oocyte increases. D) The cortical reaction occurs. E) The ovum begins mitosis. - ...

Embryology Questions & Answers 1. What is present in the 2nd week of development of extraembryonic cavity? Exocoelomic cysts. 2. In IVF, what is used to stimulate ovaries? Gonadotropins are used to stimulate ovaries. 3. On which day does the posterior neuropore close? Day 23. 4. Which are following are derived from the endoderm? None of the following. 5. Which embryonic layer is in contact with parietal hypoblast? Cytotrophoblast. 6. Which layer is generated by the epiblast? Epi...