Flashcards in Fetal circulation Deck (55)
In fetal circulation, all blood is oxygenated or deoxygenated?
Pathway of fetal circulation.
Umbilical vein > Liver> Ductus venosus > Inferior vena cava > Right atrium > Foramen ovale > Left atrium > Left ventricle > AORTA
from Right atrium > right ventricle > pulmonary artery> ductus arteriosus > AORTA
What are the 3 shunts during fetal days?
Remnants of Umbilical vein
Remnants of ductus venosus
Remnants of Foramen Ovale
Remnants of ductus arteriosus
Ligamentum teres is found in what organ?
Foramen ovale in the heart is found?
Interatria/ Between R. atrium and Left atrium
Specifically R. atrium
Connection of pulmonary artery to aorta
Flow of blood to ductus arteriosus
From umbilical vein to Inferior vena cava
Remnant of umbilical cord can be seen?
It is caused by the movement of IONS between the inside and outside of the membrane.
Other term for electric impulse
2 basic ions for Action potential
Sodium and potassium
Depolarization due to increase Na+ and Decreased K+, is what phaseof action potential?
What happens in Phase 1 of action potential?
Partial repolarization due to decreased Na+ ion.
Phase where in Ca+ ion Increases, prolonging the depolarization
Phase 3 in action potential
Repolarization, Na+ and Ca+ are all close (300mS)
Phase where in Resting membrane potential occurs due to exchange of Na+ - K+ pump
Strongest ion which creates the longest action potential
Node located on the superior wall of RIGHT atrium.
Sino-atrial node (SA)
radiation present in SA node
Natural pacemaker of the heart
Function of SA node
For ATRIAL contraction
This reflex produces an increased heart rate due to stretching of the right atrium.
Muscle in Right atrium that helps in muscle contraction.
Node located between ATRIA and VENTRICLES
Atrioventricular node (AV)
Function of AV node
For Ventricular contraction