Flashcards in Cardiovascular Deck (392)
What two structures does the truncus arteriosus give rise to?
ascending aorta and pulmonary trunk
What does the bulbus cordis give rise to?
smooth muscle outflow tract of left and right ventricles
What does the primitive atria give rise to?
trabeculated part of left and right atria
What does the primitive ventricle give rise to?
trabeculated part of left and right ventricle
What does the primitive pulmonary vein give rise to?
smooth muscle part of left atrium
What does the left horn of the sinus venosus give rise to?
What does the right horn of the sinus venosus give rise to?
smooth muscle part of right atria
What two structures make up the superior vena cava?
right common cardinal vein
right anterior cardinal vein
By how many weeks into embryological development does the heart begin beating?
What protein is defective in Kartagener Syndrome?
What is the name of the structure that embryologically connects the left and right atria?
What structure originally separates the left from the right atria?
What structure forms in the septum primum?
What develops as the foramen secundum maintains the left to right shunt?
What structure is left over after the septum secundum covers the foramen secundum?
What structure forms the valve of the foramen ovale?
What two structures fuse to form the atrial septum?
septum primum and septum secundum
What causes a patent foramen ovale?
failure of septum primum and septum secundum to fuse
What can a patent foramen ovale lead to?
Does a VSD most commonly occur in the muscular or membranus septum?
What two ridges fuse to form the aorticopulmonary septum?
bulbar ridges and truncal ridges
What are the aortic and pulmonary valves derived from?
endocardial cushions of the outflow tract
What are the mitral and tricuspid valves derived from?
fused endocardial cushions of the AV canal
What is Ebsteins Anamoly?
tricuspid valve leaflets are attached to RV
What weeks does hematopoiesis occur in the yolk sac?
What weeks does hematopoiesis occur in the liver?
6th week to birth
What weeks does hematopoiesis take place in the spleen?
10th - 28 weeks
What weeks does hematopoiesis occur in the bone marrow?
18 weeks to adult
What is the PO2 of blood in the umbilical vein?
30 mm Hg