Embryo (04.08) Development of Great Vessels Flashcards
v that returns poorly oxygenated blood from umbilical vesicle (yolk sac)
vitelline vv
vv that carry well-oxygenated blood from chorionic sac
umbilical vv
vv that return oxygen poor blood from body
common cardinal vv
during the ___ week, a shunt between the two anterior cardinal vv forms the ___ ______ v once ____ anterior cardinal vein degenerates
- 8th
- left brachiocephalic
- left
what two things form the superior vena cava
- right anterior cardinal v
- right common cardinal v
(makes sense that they are both on the right)
the posterior cardinal vein forms the ____ and the ___ ___ vv
- azygos
- common iliac
the ___ umbilical vein fully degenerates
right
what vein forms the ductus venosus
left umbilical vein
the ____ ___ is the only vessel carrying blood to embryonic heart
ductus venosus
what do the right and left vitelline veins caudal to the liver form?
hepatic portal system
what forms the coronary sinus
left sinus venosus horn
the right sinus venosus horn is incorporated into the primordial ___ ____ to form ____ ___ (smooth area)
- right atrium
- sinus venarum
the pulmonary veins develop as an outgrowth on the ___ ___ wall, just left of the ____ ___
- dorsal atrial wall
- septum primum
the ____ expands the primordial pulmonary vein and its branches are incorporated into the wall of the __ atrium, resulting in a mostly ___ wall
- atrium
- left
- smooth
what are the two adult derivatives of the right anterior cardinal v
- right brachiocephalic v
- superior vena cava
what is the adult derivative of the left anterior cardinal vein
left brachiocephalic v
what are the two adult derivatives of the posterior cardinal vv
- root of azygos v
- common iliac v
what is the adult derivative of the right umbilical vein?
it degenerates
what are the three adult derivatives of the left umbilical v?
- umbilical v
- ductus venosus (embryo)
- ligamentum venosum (adult)
what are the two derivatives of the right vitelline v
- inferior vena cava (from heart –> caudal edge of liver)
- contributions to hepatic portal system
what is the adult derivative of the left vitelline v
contributions to hepatic portal system
what is the adult derivative to sinus venosus (right horn)
sinus venarum (smooth-walled portion of R atrium)
what is the adult derivative (left horn)
coronary sinus
bulbus fortis forms the ____ ____ like the ___ ___ in truncus arterious
- bulbar ridges
- truncal ridges
both the bulbar ridges and the truncal ridges are derived from ___ ___ ___
neural crest mesenchyme
what are the two reasons for the division of the pulmonary trunk and ascending aorta?
- fusion of aorticopulmonary septum
- 180 degree turn caused by the streaming of blood from the ventricles
what is a common cause of cyanotic heart disease
transposition of the great vessels
tetralogy of fallot results form what?
unequal division of truncus arteriosus
what are the four possible things that could happen in tetralogy of fallot?
- pulmonary artery stenosis
- ventricular septal defect
- dextroposition of aorta
- right ventricular hypertrophy
the coronary aa are formed as sprouts off the ____ ___ and ____
- sinus venosus
- epicardium
how do the coronary aa “invade” the aorta?
ingrowth of arterial endothelial cells
what is the only pharyngeal arch that does not form anything?
5
the first pharyngeal arch a forms what two things?
- maxiallary a
- external carotid a
the second pharyngeal arch a forms what?
stapedial aa
the 3rd pharyngeal arch aa from what two things?
- common carotid aa
- proximal portion of the internal carotid
what two things form the distal part of the right subclavian artery?
- right dorsal aorta
- right 7th intersegmental a
what forms the left subclavian a
left 7th intersegmental a
what does the left 4th pharyngeal arch a form?
arch of the aorta between left common carotid and left subclavian
what does the right 4th pharyngeal a form?
proximal part of the right subclavian
what 4 things constitute the formation of the arch of the aorta
- tuncus arteriosus
- aortic sac
- 4th pharyngeal arch a
- left dorsal aorta
the proximal portion of the left 6th pharyngeal arch a forms what?
proximal left pulmonary a
the distal portion of the left 6th pharyngeal arch a forms what?
ductus arteriosus
the proximal portion of the right 6th pharyngeal arch a forms what?
proximal right pulmonary a
the distal portion of the right 6th pharyngeal arch a forms what?
nothing, it degenerates
what causes the laryngeal nn to differ on each side of the body?
6th pair of pharyngeal aa
what becomes the common iliac aa and lateral sacral aa?
-5th pair of intersegmental aa
the vitelline aa (unpaired) goes to the primordial gut and persists as what three aa?
- celiac trunk
- SMA
- IMA
the proximal portion of the umbilical aa form what two things?
- internal iliac aa
- superior vesical aa
what is the thoracic duct composed of?
- caudal right lymphatic duct
- anastomosis of left and right cranial thoracic duct
what is the right lymphatic duct composed of?
cranial portion of right thoracic duct
