BGDA Practical 7 - Quiz

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 BGDA Practical - Implantation to 8 Weeks.

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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 peritoneal cavity.
	single pericardial cavity and two pleural and two peritoneal 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 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

9 Select the correct options below for maternal dietary components directly important for neural development

	lead
	vitamin B9
	iodine
	chlorine
	vitamin B3

10 Which limbs are sensitive to teratogenic damage first

	upper limbs
	lower limbs

11 The bones of the adult skull form only by the process

	intramembranous ossification
	endochondral ossification
	neither intramembranous or endochondral ossification
	intramembranous and not endochondral ossification
	both intramembranous and endochondral ossification
	chondroblast cell replacement of osteoblast cells

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