2010 BGD Practical 6 - Quiz: Difference between revisions

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 || Placodes are paired ectodermal regions forming in the head region during week 4 and contribute to each sensory system. Neural crest does associate with sensory development, but not as the placode. The upper and lower jaw form from two separate regions of the first pharyngeal arch: maxillary (upper) and mandibular (lower).
+{The important human cardiogenic event commencing during week 5 is
+|type="()"}
+- heart tube fusion
+- heart looping
++ heart septation
+- heart valve development
+||Atrial and ventricular cardiac septation commences in week 5. Heart tube fusion occurs during week 3, heart looping in week 4 and heart valve development later in week 6 to 7.
 </quiz>

Revision as of 16:16, 23 May 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

Point added for a correct answer:
Points for an incorrect answer:
Ignore the questions' coefficients:

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 intraembryonic coelom finally forms

	pericardial, pleural and periotoneal cavity.
	single percardial cavity and two pleural and two periotoneal cavities.
	neural tube lumen, gastrointestinal tract lumen and neural crest.
	the paired dorsal aortas running the embryo.

7 Which of the following statements about placodes is most correct.

	placodes form as patches of mesoderm only in the head region
	placodes are part of the neural neural crest that will contribute to sensory structures
	placodes contribute the upper and lower jaw structures of the head
	placodes are associated with sensory development, except for hearing.
	placodes are paired ectodermal regions.

8 The important human cardiogenic event commencing during week 5 is

	heart tube fusion
	heart looping
	heart septation
	heart valve development

Quizzes