Embryology Interview Preparation Guide
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Embryology Interview Questions and Answers will guide us now that Embryology is the study of the development of an embryo. An embryo is defined as any organism in an early stage well before birth or hatching, or in plants, before germination occurs. Learn Embryology basic and advance concepts or get preparation of Embryology Interview Questions and Answers Guide.

40 Embryology Questions and Answers:

1 :: What are the three types of germ layers that form tissues and organs in animals?

The three germ layers are the ectoderm, the mesoderm, and the endoderm.

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2 :: How is the mesoderm (third germ layer) of triploblastic animals formed?

The mesoderm appears from differentiation of endodermal cells that cover the dorsal region of the archenteron.
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3 :: What are the archenteron and the blastopore? What is the stage of the embryonic development in which these structures are formed? What are the destinations of the archenteron and of the blastopore?

Archenteron is the tube formed during gastrulation by means of invagination of the blastula wall inside the blatocele. It is the origin of the gastrointestinal tract. Blastopore is the opening of the archenteron to the exterior. The blastopore gives birth to one of the extremities of the digestive tube: the mouth in protostome beings, or the anus in deuterostome beings.
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4 :: What is gastrulation? How during gastrulation are the first two germ layers formed? Which are these germ layers?

Gastrulation is the process through which a portion of the blastula wall undergoes invagination inside the blastocele forming a tube called archenteron (primitive intestine). The cells of the inner side of the tube form the endoderm (germ layer) and the cells of the outer side form the ectoderm (another germ layer). It is the beginning of the tissue differentiation in the embryonic development.
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5 :: After the blastula stage what is the following stage of the embryonic development? How is the passage from blastula to the next stage called?

The blastula turns into gastrula in a process known as gastrulation.

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