Development of the Vasculature Flashcards
arteries, veins, and lymphatic channels form from what embryonic layer
mesoderm
what forms first extraembryonic vessels or embryonic vessels ?
extraembryonic
when do the pharyngeal arches form ?
4th and 5th weeks of development
the first arch gives rise to
maxillary artery
the second arch gives rise to
hyoid and stapedial arteries
the third arch persists and gives rise to
common carotid and internal carotid arteries
the fourth arch gives rise to
the right 4th arch persists as the right subclaviian artery
the left 4th arch persists as a segment of the aortic between the origin of the left common carotid and left subclavian
the right 6th arch gives rise to
right pulmonary artery
the left 6th arch gives rise to the
left pulmonary artery and ductus arteriousus
what is the carotid duct
connects the 3rd and 4th arches
what nerves supplies the 6th arch
recurrent laryngeal nerve
general function of the vitelline arteries
arise from the abdominal aorta and supply derivatives of the yolk sac
the thoracic vitelline arteries supply what
esophagus
the celiac artery supplies
foregut
superior mesenteric arteri supplies
midgut
inferior mesenteric artery supplies the
hindgut
the umbillical arteries are first paired branches of the dorsal aorta that supply what?
allatois
umbilical arteries in adulthood are what
medial umbillical ligaments
dysphagia lusoria
abnormal origin of the subclavian artery
Anomalies associated with development of the arterial system /
patent ductus arteriousus
coarctation of the aorta
dysphagia lusoria
double aortic arch
What are the three system of veins that can be observed during the 5th week of development ?
vitelline, umbilical and cardinal
Function of the vitelline veins
carry blood from yolk sac to sinus venosus
function of the umbilical veins
carry oxygenated blood from the placenta to the embryo
Function of the cardinal veins
drain blood from the rest of the embryo and deliver it to the Right side of the heart
Veins derived from the vitelline veins
small region of IVC portal vein hepatic vein ductus venosus superior mesenteric inferior mesenteric splenic
distal portion of the left umbilical veins carries blood
from the placenta towards the liver
what is the communication between the left umbilical and the right vitelline called
ductus venosus
function of the ductus venosus
bypasses the sinusoids of the liver so that blood reaching the liver has the highest oxygenated and nutritional content bypassing the capillary beds this blood reaches the heart and brain and not the liver
after birth the left umbilical vein becomes
liigamentum teres hepatis
after birth the ductus venosus obliterates to
ligamentum venosum
subcardinal veins
drain the kidneys
sacrocardinal veins
drain the lower extremities
supracardinal veins
drain the body wall
anatomosis of the anterior cardinal vein forms
brachiocephalic artery
left anterior cardinal vein contributes
to the coronary sinus and small left superior intercostal vein
superior vena cava arises from
union of right common cardinal vein, proximal part of right anterior cardinal vein
right subcardinal forms a significant portion of
inferior vena cava
anatomosis of sacrocardinal veins forms
left common iliac
supracardinal veins help form
azygous system
posterior cardinal veins form
arch of azygos vein and left superior intercostal vein
contributions to inferior vena cava
heaptic segment from right vitelline
suprarenal segment from right subcardinal
renal segment from subcardinal and supracardinal
subrenal segment from right supracardinal
common iliacs from posterior cardinal
right gonadal vein drains to
IVC
left gonadal vein drins to
left renal vein
anomalies associated with venous system
double inferior vena cava, absence of inferior vena cava, persistent left superior vena cava or double superior vena cava
congenital lymphedema
dilation of lymphatic channels or congenital hypoplasia of lyphatic channels
cystic hygroma
large swellings composed of fluid filled cavities involve jugular lymph sacs that fail to connect lymphatic vessels
