1 Flashcards
The embryonic origin of the ligamentum arteriosum is from :
The sixth arch artery which is also know as the pulmonary arch
The most superior part of the inferior vena cava is derived from
Right vetelline vein
Which umbilical vein degenerates during the fifth week of embryonic development
The right umbilical vein
The definitive umbilical vein is?
The left umbilical vein
Which embryonic structures are involved in the formation of the definitive right atrium
1)Primitive atrium
2)right sinus venosus
3)left sinus venosus
4)right sinus horn
Of the following the one most closely associated with the ligamentum teres Hepatis is
a)the umbilical artery
B)the umbilical vein
C)the vitelline vein
The umbilical vein
The remnant of the umbilical vein after it closes at birth is
The ligamentum teres hepatis
What’s the other name of the ligamentum teres
The round ligament
Caput medusae
Is the reopening of the round ligament and allows blood to flow through it leading to the condition called CAPUT MEDUSAE which is characterized by a dilated vein around the ubilicus
What do you know about the ostium secundum defect
It is a heart defect that is characterized by the opening between the left and right atria .This May be :
1)caused by excessive resorption of septum prinum
2)inadequate development of the septum secundum
Depending on size of the defect there can be shuntin of blood between the atria
In the development of the heart the coronary sinus is formed from
From the left horn of the sinus venosus
What becomes the valve of the inferior vena cava and the coronary sinus in the development of the heart
The right sinus valve
The mesenchymal cells that aggregate to form blood islands are called
Angioblasts
The closure of the foramen primum results from the fusion of the
Septum secundum and the endocardial cushions
What’s the most common atrial septal defect
Secundum type ASD
The most common cardiac septal defect is
The membranous type vsd
The fetal left atrium is mainly derived from the
Primitive pulmonary vein
The fetal right atrium is mainly derived from the
Sinus venosus
State the remnants of the ;
1)first aortic arch artery
2)second aortic arch artery
3)third aortic arch artery
4)fourth aortic arch artery
5)6th aortic arch artery
1)=maxillary artery
2)stapedial and the hyoid arteries
3)the proximal carotid artery
4)becomes the proximal right subclavian and part of the of the arch of The aorta
5)becomes the proximal pulmonary arteries and ductus arteriosus
The aortic sac
Is connected to the dorsal aorta via the aortic arch arteries
The crista terminalis is derived from
The right cusp of the valve of the sinus venosus
The meckels diverticulum is an adult remnant of the
Vitelline duct
After birth the ductus arteriosus normally closes and becomes the
Lingamentum arteriosum
Pantene ductus arteriosus (PAD) is due to
The ductus arteriosus not closing after birth
State the two main sources that gives rise to the arteries of the body
The pharyngeal (aortic)arch arteries and the
The dorsal aorta
