Cardio System Flashcards
Is the blood on the right side of your heart oxygenated or deoxygenated blood?
deoxygenated blood
Is the blood on the left side of your heart oxygenated or deoxygenated blood?
oxygenated
What are the function of valves?
To prevent the blood from flowing back
What is the function of vena cava?
- Superior and Inferior
Both collect deoxygenated blood from your body to the right atrium.
Where does the right ventricle pump blood to?
it only pumps blood to the lungs to become oxygenated.
-considered small pump compared to left ventricle
What is the order of blood flow in the heart?
Superior/Inferior Vena Cava -> right atrium -> tricuspid valve -> pulmonary semilunar valve -> left pulmonary arteries -> left pulmonary vein -> left atrium -> mitral valve -> left ventricle
What carries deoxygenated blood to the lungs to carry oxygen?
left pulmonary arteries
Where does the left ventricle pump blood to?
pumps blood to brain and the rest of the body (thicker muscles)
-considered big pump compared to the right ventricle
What “glues” the heart muscles together?
Intercalated disks
What are the types of junctions in the heart?
Desmosomes and Gap junction
-gap junction are like leak channels where it is open in the center and ions can go through (like when muscle cells generate an action potential)
Does the sympathetic or parasympathetic control heart contractility? Which receptor?
Sympathetic, beta 1
What determines flow?
pressure gradient and resistance
What is the most efficient way to increase your BP?
Constricting the vessel. Controlled by alpha receptor
Blood flow equations
Q= delta P/ R
Resistance = (8viscosityL)/(pi r^4)
How are flow and velocity related?
F = A*V
or
V = F/A
