Flashcards in Development of Vasculature Deck (74)
Blood vessels develop from
Angioblastic cords from mesoderm
Main hematopoietic organ until others take over
Where do small blood vessels first form and what do they become?
In extraembryonic mesoderm of connecting stalk
When folding is occurring, where are blood vessels developing and are they connected?
IN yolk sac, vitelline duct, and connecting stalk
Prominant artery during folding
Each pharyngeal arch will have ______ and what are they derived from?
a pair of aortic arches
From aortic sac of heart
Aortic arches connect distally to
Pair of dorsal aortae
Dorsal aortae connect to yolk sac by _____ and placenta by _____
Three vitelline arteries survive to become______
Unpaired arteries of adult that supply foregut, midgut, and hindgut
Remnants of umbilical arteries
Ligamentous remnants from internal iliac artery
Lateral folding and dorsal aortae
Causes the two dorsal aorta to form a single aorta caudal to the neck
In neck and head, they remain separate
Distally, two dorsal aorta fuse to form
Rostral common outflow of developing heart and connects heart to pairs of aortic arches
Common tube leading from heart to aortic sac
Forms asecnding aorta and pulmonary trunk
1st aortic arch...what does it form and when does it form
First and disappears first
Forms maxillary artery that supplies deep regions of face
2nd aortic arch...what does it and form and when
Begins to lose connection with aortic sac after formed but still connected to dorsal aorta
Forms stapedial artery which regresses
Dorsal aorta between which two arches is lost?
3rd and 4th
Postion of dorsal arota cranial to 3rd aortic arch forms
Continuous tube with 3rd arch
External carotid from
proximal part of 3rd aortic arch
Common arotid from
Part of 3rd aortic arch proximal to external arotids origin
Aortic sac regresss where?
In region where 3rd aortic arch arises
What is notable segmental artery?
7th cervical intersegmental artery sprouts from each dorsal aorta proximal to their fusion
Where do segmental arteries arise forom
4th aortic arches fate
Remain associated with aortic sac
6th aoritc arches fate
Remain associated with aortic sac and trunucs arteroisis
Truncus arteriosis and aortic sac undergo septation to form
Pulmonary trunk and ascending aorta
aortic sac associated with which arch is lost?
6th aortic arch becomes continuous with
What sprouts from 6th aortic arch?
Right and left pulmonary arteries