Dr Asif Lang

Question 1

Phf gives rise to

Answer 1

Atria and lv

Question 2

Shf gives

Answer 2

Rv, outfow tract

Question 3

Shf laterality

Answer 3

Left for right

Question 4

Dorsal aortae

Answer 4

Other than cardiogenic area thst gives lateral blood islands that unite to form da

Question 5

Antidepressants are teratogenic

Answer 5

Distrupt serotinin pw, pitx.

Question 6

Pitx2

Answer 6

Master gene for left sidedness

Question 7

Initially heart tube connects to dorsal pericarfdial cavity by

Answer 7

D. Mesocardium

Question 8

D mesocardium looses inner part and becomes

Answer 8

Transverse pc sinus

Question 9

Cardiac jelly is rich in

Answer 9

Hyaluronic acid

Question 10

Card tube begins to bend by and ends by

Answer 10

Day 23 ends by 28

Question 11

Reason of loopin

Answer 11

Cells being added continuously, inc length, less space so bends

Question 12

B. Cordis gives

Answer 12

Trab part of rv

Question 13

C . Cordis gives

Answer 13

Outflow tract of both vent

Question 14

Truncus arteriosus gives

Answer 14

Roots and proximal parts of aorta and pa

Question 15

Proximal 3rd of bulbus yives

Answer 15

Prim rv while rest gives prim lv

Question 16

Sonic hedge hog pathway

Answer 16

Elongation of outflow tract

Question 17

S. Venosus veins

Answer 17

Vitellrne or omphalomesentric
Umbilical
Common cardinal ant and post

Question 18

Left to right shunt in _____ weeks?
Changes?

Answer 18

4th to 5th
Left horn shrinkage and right umbilical vein disappears

Question 19

Remnants of left horn

Answer 19

Coronary sinus
Oblique left atrium vein

Question 20

Right horn gives

Answer 20

Smooth part of RA= sinus venarum

Question 21

Sinu atrial orifice has____ valves

Answer 21

Righ left venous valves

Question 22

Crista terminalis

Answer 22

Sep smooth trab parts of ra

Question 23

Septa formation tim3

Answer 23

27 to 37 days

Question 24

Ostium primum

Answer 24

Opening btw R and L atria formed by septum primum

Question 25

Before spt prim7m closure

Answer 25

Apoptosis leaves a hole, ostium secondum

Question 26

Smooth part of ra is given by s. Venosus
While la is given by the pulmonary veins

Answer 26

True

Question 27

Av valves derived from

Answer 27

Mesenchymal tissue

Question 28

Common teratogens

Answer 28

Rubella, thalidomide,alcohol, insulin dependent diabetes

Question 29

Hypoplastic sybdrome

Answer 29

Less cells in one chamber

Question 30

Ebstein anomaly

Answer 30

Tricuspid valve moves to apex

Question 31

Neural crest cells a.so contribute to facial development so heart and facial defects togethrr are common

Answer 31

Fact

Question 32

Most common heart defects

Answer 32

VSDs

Question 33

TOF

Answer 33

1 pulmonary stenosis
2 iv septal defect
3 overriding aorta over the defect
4 right vent hypertrophy

Question 34

TOF is commonky found in people with

Answer 34

Alagile syndrome

Question 35

Pacemaker system development

Answer 35

First all cells have the ability then caudal end of heart tube yhen sinus venoaua then san

Question 36

Aortic arches

Answer 36

Supply of corresponding pharyngeal arches

Question 37

Aortic arches no

Answer 37

5 pairs, fifth almost never forms

Question 38

Vasculoendothelial factor

Answer 38

Patterning of vascular sys

Question 39

Remaining arches by day 29

Answer 39

3, 4, 6