embryology

Question 1

up until end of week 3 what is a developing baby called

Answer 1

conceptus

Question 2

between week4-8 what is a developing baby called

Answer 2

embryo

Question 3

from week 9 onwards what is a developing baby called

Answer 3

foetus

Question 4

name the corresponding parts to superior, inferior, anterior and posterior

Answer 4

cranial, caudal, dorsal, ventral

Question 5

what are the steps of embryogenesis

Answer 5

Gametogenesis, fertilisation, cleavage, gastrulation, morphogenesis, organogenesis

Question 6

what happens in gametogenesis

Answer 6

formation of germ cells (ovum and sperm)

Question 7

what happens in fertilisation

Answer 7

fusion of sperm and oocyte to form zygote

Question 8

what happens in cleavage

Answer 8

rapid cell devision (forms blastocyst)

Question 9

what happens in gastrulation

Answer 9

formation of germ laters: ectoderm, medoderm, endoderm

Question 10

what happens in morphogenesis

Answer 10

embryonic folding to make 3D

Question 11

what happens in organogenesis

Answer 11

formation of organs

Question 12

what does the ectoderm go on to produce

Answer 12

epidermis of skin and nervous system

Question 13

what does the mesoderm go on to produce

Answer 13

organs

Question 14

what does the endoderm go on to produce

Answer 14

lining of gut tube, resp tract and bladder

Question 15

what is the zona pellucida

Answer 15

tough glycoprotein that surrounds oocyte

Question 16

what type of blastomeres are totipotent during cleavage

Answer 16

8 cell stage blastomeres

Question 17

what is a blastocyst

Answer 17

group of cells called trophoblasts, ‘hatches’ from zona pellucida

Question 18

name the normal sites of implantation

Answer 18

middle or upper dorsal uterine wall

Question 19

what are the 4 components of tetralogy fall out (congenital heart disease)

Answer 19

pulmonary stenosis,
Ventricle septal defect,
right ventricular hypertrophy,
overriding aorta