TWINS

TWINS
MONO ZYCOTIC
MONO CHORIONIC

DI ZYGOTIC
DI CHORIONIC

EMRYOLOGY

EMRYOLOGY
GIT DERIVATIVES:
-->LUNG
-->LIVER
-->THYMUS + PTH
-->PANCREAS:
DORSAL+
VENTral-->
VENT(DUCT)ONLY

GONADAL DEVELOPMENT

GONADAL DEVELOPMENT:
M ALE--> MIS
M ULLERIAN DUCT\
M ESO-NEPHRIC DUCT/

W OMAN-->
W OLFFIAN DUCT\

PHARYNGEAL POUCH

PHARYNGEAL POUCH
1--> ALL EAR
2-->TONSILS
3-->
3 THINGS:
1 THYMUS+ 2 INF. PTH

4--> SUP. PTH

BRANCHIAL APPARATUS

BRANCHIAL APPARATUS:
CAP
OUT--> IN
C LEFT<-- ECTO-DERM A RCH<-- MESO-DERM P OUCH<-- ENDO-DERM A# 1 2 3 4--> LARYNX
CN# 5 7 9 10

A1= M
M ALLEUS & INCUS
M ASTICATION MUSCLES 4
M ANDIBLE
MA NDIBULAR N.= CN V3

FACIAL EXPRESSION<--A2
CN 7

STYLO- PHARYNGEUS<-- A3
GLOSSO-PHARYNGEUS CN. 9

LARYNX<-- A4<-- CN 10, VAGUS

Aortic Coarctation

Co A
Co NTOUR= 3 Sx
Co MBINATN-->BI-CUSP.AV
Co LLATERAL ARTERIES->
C XR-->RIB NOTCHING
Co LD LEGS
C LAUDICATION
C HEST PAIN

2 TYPES:
aD ULT
D ISTAL to
D UCTUS

I NFANTILE
I NCLOSE to the HEART

CYANOTIC CHD: 5 T

CYANOTIC CHD = 5 T

T ETRALOGY of FALLOT
T GA --> BAS
T RUNCUS ART. communis --> DiGeorge
T RICUSPID ATRESIA
T APVReturn Connections +ASD

CXR=8,SNOW-MAN

4 PV
4 TYPES~ASD

FALLOT-->PROVE it
P ULMONARY V. STENOS
R VH
O VER-RIDING AORTA
V SD
E RYTHRO-POETIN/

KIDNEY

KIDNEY:
PRO->MESO->META
PRO-->OUT
MESO-->OUT
META--> KIDNEY

MESO=
W OLFFIAN DUCT
W OMEN OUT

PARA-MESO-N. DUCT=
M ULLERIAN
M ALE OUT
FUSION WOMEN

ERYTHROPOESIS

ERYTHROPOESIS:
Y OUNG Y OLK SAC
L IVER
S YNTHESIZE S PLEEN
B LOOD B M