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UB ANA 113 Lec 21
Heart I
Question | Answer |
---|---|
great vessels | carry blood to and from heart |
base | where great vessels attach - superior |
apex | inferiorlateral |
beginnings of fetal heart | straight tube, 2 chambers. Venous(inferior) becomes atria, arterial (superior) becomes ventricle |
septa(septum) | divide heart into 4 chambers, develop @ 4 weeks |
interventricular septum | divide right ventricle from left |
interarterial septum | divide atria, not completely developed in fetal heart |
foramen ovale | hole during development between R and L atria. closes early so oxy and deoxy blood dont mix |
septal defect | septum doesnt form properly. results in cyanotic "blue baby" |
fossa ovale | depression when foramen ovale closes |
pericardium | double walled sac. Tough CT around heart |
visceral pericardium | inner layer of sac. "skin on apple" |
parietal pericardium | outer sac around heart |
pericardial cavity | space between pericardial coverings |
serous fluid | lessens friction due to pumping. Thin layer |
Pericarditis | inflammation of serous membranes. Fluid accumulates in cavity |
superior vena cava | drains superior region |
inferior vena cava | drains inferior region |
coronary sinus | drains venous blood from coronary circulation |
What drains into the right atrium | superior vena cava, inferior vena cave, coronary sinus |
Tricuspid valve(right AV valve) | blood moves through from right atrium to right ventricle |
papillary muscles | from wall of heart, fingerlike, prevent valve inversion, stabilize. In ventricles |
chordae tendinae | prevent valve inversion |
pulmonary semilunar valve | blood goes through when traveling from right ventricle to pulmonary trunk |
blood passes from the pulmonary trunk to... | 2 pulmonary arteries |
What is special about the pulmonary arteries? | Only arteries that carry deoxygenated blood. Take blood to lungs |
What is special about the pulmonary veins? | Only veins that carry oxygenated blood. Take blood from lungs |
How many pulmonary veins are there? | 4 total, 2 on each side |
How does blood get from the left atrium to the left ventricle? | Through the bicuspid valve. (Left AV). (Mitral valve) |
Where is cardiac muscle the thickest? | In the left ventricle because it need to push against gravity to the whole body |
Aortic semilunar valve | from base of aorta through this to the arch of aorta |