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39 Cards in this Set
- Front
- Back
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wk 4
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heart beat
blood flow |
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sinus venosum
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right atrium
receives blood fixed in place by septum transversum develops right & left horns |
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caudal to cranial
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Sinus venosus
Atrium AV canal Ventricle (Left ventricle) Bulbus Cordis Truncus Arteriosus Aorta |
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bulbus cordis
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proximal- trabeculated portion of Right ventricle
distal- conus cordis, outflow tracts of both ventricles |
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truncus arteriosus
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distributes blood
continues cranially with aortic sac fixed by pharyngeal arches |
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endocardial cushions
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divide AV canal into right and left canals
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septum secundum
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foramen ovale
right of septum primum |
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septum primum
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foramen primum
foramen secundum |
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sinus venosus right horn
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opens into RA
receives blood from inf & sup VC incorporated into wall of RA smooth part- sinus venarum crista terminalis- marks jxn of sinus venosus & primordial atrium |
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sinus venosus left horn
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coronary sinus
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left atrium
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incorporation of primordial pulmonary veins
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aortic arch 1
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maxillary arteries
part of external carotid a. |
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aortic arch 2
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hyoid aa.
stapedial aa. in middle ear |
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aortic arch 3
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prox- common carotid aa. & external carotid aa.
distal- prox portion of internal carotid aa.; distal portion of internal carotid aa from dorsal aorta |
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aortic arch 4
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left- part of arch b/w left common carotid & left subclavian aa.
right- prox portion of right subclavian a. |
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aortic arch 5
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nonexistent
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aortic arch 6- left
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prox- left pulmonary a.
distal- ductus arteriosus prenatal shunt b/w PA & aorta left recurrent laryngeal n. passes inferior |
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aortic arch 6- right
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prox- right pulmonary a.
distal degenerates- allow rt. recurrent laryngeal n. to rise and hook around rt. subclavian a. |
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aortic sac- ascending aorta
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right horn- brachiocephalic trunk
left horn- arch of aorta |
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arch of aorta
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aortic sac bifurcates
left 4th aortic arch left dorsal aorta |
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left umbilical v.
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supplies high o2 blood from placenta to fetus
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shunts inf. vena cava and umbilical v.
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ductus venosus
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umbilical v.
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ligamentum teres hepatis
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ductus venosus
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ligamentum venosum
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ductus arteriosus
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ligamen. arteriosum
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umbilical a.
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medial umbilical ligament
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foramen ovale
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fossa ovalis
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left subclavian a.
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7th intersegmental
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what makes up inf VC?
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renal- supra & sub
postrenal- rt supra prerenal- rt sub heptatic- hepatic v. |
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right anterior cardinal & common cardinal
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superior vena cava
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vitelline veins derived from
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yolk sac
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umbilical vein derive from
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chorion
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vitelline aa. supply
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yolk sac
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superior vena cava
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right anterior cardinal
common cardinal |
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bulbar ridges & endocardial cushions fuse
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membranous portion of Interventricular septum``
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truncus arteriosus & bulbis cordis
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partitioning of ____ required to separate to drain heart
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severe hypoperfusion postnatally when DA closes
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preductal- coarctation (constriction) of aorta
proximal to DA |
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right subclavian a.
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7th intersegmental
right 4th arch |
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distal to DA
collateral circulation develops |
postductal
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