Help me Term 2 Last Night Gah Flashcards
Describe 4 aortic arch anomalies:
Persistence or regression
Regression = double aortic arch
Patent ductus arteriosus
Coarctation
Describe the 3 foetal shunts
DV FO DA
Ductus venosus- bypass liver, umbilical to placenta
Foramen ovale- bypass lungs, atrium to atrium
Ductus arteriosus- bypass lungs into aorta from rv and pulmonary arteries
What does the mesoderm become
Heart tube and blood vessels
What does the aortic sac become
Dorsal aortae
What does the Truncus arteriosus become
Pulmonary trunk and aortic arch
What does the bulbis cordis become
rv and outflow trunk
What does the primitive ventricle become
Left ventricle
Primitive atria becomes what
Left atrium and right atrium
Aortic arch 1 and 2: what happens?
Disappear early
3rd aortic arch becomes
Common carotid
4th right and left =
Right= right subclavian
Left= aortic arch
What happens to the 5th aortic arch
Diappears
6th arch becomes
Pulmonary arteries (right) and
left: left p artery And ductus arteriosus
4th left aortic arch becomes what
The aortic arch
Right subclavian arose from which primitive aortic arch?
4th right
If the examiner asks in which intercostal space a structure is, can you say 5th, or must you say:
5th left intercostal space
Aorta and pulmonary trunk is derived from
Bulbis cordis becomes
Primitive atrium becomes
Sinus venosus becomes
Truncus arteriosus
Smooth part of RV and LV
Trabeculated part of RA and LA
Smooth part of RA and coronary sinus
Sympa innervation of kings
T2-5
Nerves are surrounded by what
Fascicles by what
Multiple fascicles by what
Perineurium
Endoneurium
Epineurium
Where’s the sinus of valsalva
On aorta
Remember though the annulus is where the aortic valve leaflets hinge
Diaphragm develops from 4 mesodermal structures:
Yes
Central tendon develops from what
Septum transversum
Trachea comes from what
Foregut endoderm
Embryonic lung stage is what
3-8 weeks
Every premature child takes air
Embryonic- 3-8
Pseudo glandular
Cannalicular
