Embryology Flashcards Preview

1MB Principles > Embryology > Flashcards

Flashcards in Embryology Deck (16)
Loading flashcards...
1

What term is given to the developing baby from when fertilisation occurs to the end of week 3?

Conceptus

2

What term is given to the developing baby from week 4 to week 8?

Embryo

3

What term is given to the developing baby from week 9 to birth?

Foetus

4

What are the 6 phases of embryonic development?

Gametogenesis
Fertilisation
Cleavage
Gastrulation
Morphogenesis
Organogenesis

5

What occurs in gametogenesis?

Formation of germ cells (sperm, ovum)

6

What occurs in fertilisation?

Formation of zygote

7

What happens in cleavage?

Rapid cell division

8

What happens in gastrulation?

Formation of germ layers (ectoderm, mesoderm, endoderm)

9

What happens in morphogenesis?

Folding of embryo forms 3D human-like shape

10

What will the ectoderm go on to produce?

Skin
Nervous system

11

What will the mesoderm go on to produce?

Organs

12

What will the endoderm go on to produce?

Lining of gut
Lung bud

13

What is the zona pellucida?

Tough protein coat surrounding oocyte to give it protection

14

In cleavage, zygote divides into morula and then further into blastomeres. How many celled blastomeres are totipotent (can give rise to any cell/structure)?

8-cell blastomeres are totipotent

15

What is the amazing thing about development, according to Veronica Van Heyningen?

The amazing thing about development is not that it sometimes goes wrong, but that it ever succeeds.

16

What are the 4 components of Tetralogy of Fallot?

Pulmonary stenosis
Right ventricular hypertrophy
Overriding aorta
Ventricular septal defect