Embryology

Question 1

Neural crest derivatives

Answer 1

MOTEL PASSES
M-melonocytes
O-odontocytes
T-Tracheal cartilage
E-Enterochromaffin cells
L- Leptomeninges
P-PNS ganglia,parafollicular C cells
A-Adrenal medulla
S-schwann cells
S-septum spiral
E-Endocardial cushion
S-Skull cartilage

Question 2

Brain derived all except
Abdominal organs all except

Answer 2

Brain derived from neuro ectoderm
Except- microglia -splanchnopleuric

Abdominal organs from endoderm
Except - spleen -splanchnopleuric

Question 3

Mesonephric duct

Answer 3

Males -SEED
S-Seminal vesicles
E-epididymis
E-ejaculatory duct
D- ductus /vas deferens

Female-PEG
P-para oophron
E-ep oopron
G- Gartners duct cyst

Question 4

Paramesonephric duct

Answer 4

Males-PAT ‘males pat parameso’
Prostatic utricle appendix of testis

Females
FT,uterus,Cx,up 2/3rd of vagina

Question 5

1st pharyngeal cleft
2,3,4 pharyngeal cleft

Answer 5

1st PC
EAC
TM

2-4- obliterates
If persist brachial cyst

Question 6

Pouch
1st
2nd
3rd
4tg

Answer 6

1st -(ear) mid ear cavity,Eustachian tube,mastoid ,TM
2nd- epithelial crypt of tonisl +crypta magna(2nsil-twonsil)
3rd (thi-rd –thy-mus,infpara thy-roid)
4-sup para thyroid gland
Ultimobranchial body

Question 7

Conotruncal septum
1.Ant.displacement
2.Non spiral of conotruncal septum
3.Non formation

Answer 7

1.TOF
2.TGV
3.PTA

Question 8

Derived from
1) Visceral pleura
2)Parietal pleura

Answer 8

1)Splachnopleuric layer
2)Parietal layer
Both from Lateral mesoderm

Question 9

Structures derived from
1)Ventral mesogastrium
2)Dorsal. “

Answer 9

1)Lesser FACT
2)
Greater omentum
Gastrosplenic ligament
Lienorenal ligament
Gastrophrenic ligament

Question 10

Pancreas
1)Dorsal bud
2) Ventral bud

Answer 10

1) all
2) Uncinate process,lower part of head