2010 BGD Practical 6 - Quiz: Difference between revisions

From Embryology
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{Which of the following statements about the blastocyst is most correct
{Select the correct options below for the structures formed by sclerotome
|type="()"}
- the blastocyst forms from the 2 blastomere stage
- the blastocyst has a cavity lined with endoderm
- the blastocyst stage occurs after hatching from the zona pellucida
+ the blastocyst has an embryoblast and trophoectoderm layer
 
||The blastocyst has an [[E#embryoblast|embryoblast]], also called an inner cell mass, and a [[T#trophoectoderm|trophoectoderm]] or trophoblast  layer. The 2 blastomere stage develops into the morula and at the formation of the blastocoel is then the blastocyst. The cavity lined by endoderm is the yolk sac and occurs after the blastocyst stage. The blastocyst stage occurs both before and after after hatching from the zona pellucida.
 
 
{Select the correct options below for the process of implantation
|type="[]"}
|type="[]"}
+ is driven by the trophoblast layer
+ vertebra
+ occurs following adplantation
- dermis
+ can occur inside and outside the uterine body
- limb bud cartilage
+ allows endocrine support of the corpus luteum
+ intervertebral disc
 
- skeletal muscle


||Yes, all the above relate to the process of implantation.
||Only the vertebral column structures are formed from sclerotome. Dermis and skeletal muscle form from the dermomyotome, dividing into the dermatome (dermis) and myotome (skeletal muscle).


{The extraembryonic coelom refers too
{The extraembryonic coelom refers too

Revision as of 16:57, 23 Mayıs 2010

Here are a few simple questions that relate to your BGD practical, this page is not a part of today's Practical class. You should try in your own time after completing the Practical today.Take the quiz and see what you know, if you get some wrong, try working through through the 2010 BGD Practical - Implantation to 8 Weeks.

Take the Quiz

  

1 Which of the following sequences of embryonic disc mesoderm is most correct:

lateral to medial:extraembryonic - lateral plate - intermediate - paraxial
lateral to medial: lateral plate - paraxial - intermediate - axial
medial to lateral: notochord - somites - intermediate - lateral plate
medial to lateral: paraxial - axial - intermediate - cardiac

2 During embryonic disc folding in week 3 only the ectoderm layer folds ventrally left, right and above and below the notochord.

true
false

3 Somites form regularly at the level of the body in the direction

rostrocaudally
caudorostrally

4 The intraembryonic coelom is a horse-shoe shaped cavity that develops in the lateral plate mesoderm from a series of smaller cavities fusing. Which of the following descriptions best describes the structure that then forms in this region.

somatic mesoderm close to ectoderm, the intraembryonic coelom and the splanchnic mesoderm closest to the endoderm.
somitic mesoderm close to ectoderm, the intraembryonic coelom and the splanchnic mesoderm closest to the endoderm.
somatic mesoderm close to endoderm, the intraembryonic coelom and the splanchnic mesoderm closest to the ectoderm.
somitic mesoderm close to endoderm, the intraembryonic coelom and the splanchnic mesoderm closest to the ectoderm.
intermediate mesoderm medially close to somites and laterally close to the intraembryonic coelom.
none of the above.

5 Select the correct options below for the structures formed by sclerotome

vertebra
dermis
limb bud cartilage
intervertebral disc
skeletal muscle

6 The extraembryonic coelom refers too

amniotic cavity, yolk sac and chorionic cavity
pericardial cavity, pleural cavity and peritoneal cavity
blastocoel, somitocoel and lateral plate coelom
maternal lacunae, uterine gland lumen, uterine body cavity

7 Which of the following statements is incorrect about the process of gastrulation

gives rise to the trilaminar embryo
involves cell migration from the epiblast layer
extends from the primitive node to the buccopharyngeal membrane
occurs at the region known as the primitive streak
generates endoderm and then mesoderm layers

8 What are the two main early embryonic developmental roles of the notochord

mechanical role in embryonic disc folding and signaling for tissue patterning
formation of the nucleus pulposis and separating cloacal and buccopharyngeal membranes
gastrulation and neuralation
formation of the nucleus pulposis and intervertebral disc

9 Ectoderm refers only to the neural plate region of the trilaminar embryo

true
false



Quizzes

Medicine Practicals: Foundations Embryology - BGDA Fertilization to Implantation | Embryo | Fetal | Placenta - BGDB Gastrointestinal | Face and Ear | Sexual Differentiation

General Embryology: Ectoderm Quiz | Mesoderm Quiz | Early Heart Quiz | Placenta Quiz | Respiratory Quiz | Renal Quiz | Genital Quiz

Retrieved from ‘https://embryology.med.unsw.edu.au/embryology/index.php?title=2010_BGD_Practical_6_-_Quiz&oldid=24121’
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