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Heart/Lung Devpmnt

WVSOM: Heart and Lung Development

QuestionAnswer
What is the parasympathetic innervation to the lungs Vagus Nerve
What does parasympathetic innervation cause in the lungs bronchoconstriction, vasodilation, secretion
What runs along with the parasympathetic innervation Affferent fibers for pain and stretch
Whats does the sympathetic innervation to the lungs cause Bronchodialation, vasoconstriction, secretion inhibition
What are the lungs overall innervated by Anterior and posterior pulmonary plexi (located at root of lungs)
What does the sinus venosus give off Superior and inferior vena cavas
What does the superior vena cava come from cardinal vein
What does the inferior vena cava come from right vitelline vein
What is the function of the primitive heart tube helps dispurse blood to surrounding tissue
The right sinus horn eventually forms a connection with what other heart strucutre right atrium
What does the truncus arteriousus eventually form ascending aorta and pulmonary trunk
Right and left atria are formed by the forming of how many sphincters TWO
Which sphincter forms first Septum primum
Which direction does this grow superior to inferior
As the septum primum reaches the endocarial cushion, what happens It appoptoses to form the ostium primum
What is the second septum to form Septum secundum
What is created in the septum secundum in order to allow blood to still flow between atria Foreman ovale
What eventually happens to the septum primum and septum secundum They fuse, blocking off blood flow between atria
What is the structure created by the septum's called in the adult form Fossa Ovalis
What divides the ventricles from atria and from each other Endocaridal cushions
What are the TWO steps to remodeling of the atrioventricular canals and outflow tracts 1) Align corresponding right and left ventricles2) Bring truncus arterious in line with forming left ventricle
The fusion of what structure seperates the pulmonary valve from the aortic valve Bulbar ridges
Name three of the major factors that cause heart/blood flow problems Septal defects (blood flowing through septums), sphincter defects (faliure to open or close) and vessel size (too small or big)
What is PDA (Patent Ductus Arteriosus) normally occurs in fetal life, and allos blood to mix between the pulmonary vascular system and aorta
What is coarctation of the aorta When the aorta becomes narrow or constricted
What are the FOUR factors/problems in Hypoplastic Left HEart Syndrome 1) Coarctation of Aorta/Mitral Vlave fusion2) Patent Ductus Arteriosus (PDA)3) Small left ventricle4) Atrial Septal Defect
What are the abnormalities found in Tetraolgy of Fallot - Narrow outflow of right ventricle/pulmonary stenosis- Right ventricle hypertrophy- Interventricular Septal Defect- Overriding aorta
What are the two shunts that route blood away from the pulmonary circulation in the fetus - Interatrial shunt- Ductus Arteriousus
Describe the route of fetal blood Oxygenated blood --> umbilical vein --> ductus arteriosus --> IVC --> R. Atrium --> L. Atrium --> L. Ventricle --> Ascending Aorta ---(DEOXYGENATED BLOOD)---> SVC --> R. Atrium --> R Ventricle --> Pulmonary trunk --> ductus arteriosus --> descending aorta
At birth, what causes the closing of the interatrial shunt Left atrial pressure
What does the constricted ducuts arteriosus become atr birth ligamentum arteriosum
When the umbilical vein is clamped, what happens Pulmonary vasculature opens and flow from plancenta is closed (this causes rise is left atrial pressure
Created by: lowryc