BGDA Practical 7 - Quiz

From Embryology

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