Flashcards in cvs overview Deck (16)
what is the circulatory system?
organ system transporting O2, CO2, nutrients etc.
what is the cardiovascular system?
what is the pulmonary circulation?
O2 depleted blood
passes from heart to lungs
returns oxygenated blood to heart
what is the systemic circulation?
O2 rich blood
passes from heart to rest of body
returns deoxygenated blood to heart
what are the layers of the heart?
what are chordae tendinae?
connected to papillary muscles
-keeps blood going right way
what are septal defects?
hole in the heart
atrial septal defect
ventricular septal defect
atrioventricular septal defect
what is ASD?
incomplete closure of foramen ovale
larger defects result in hypertrophy of the RA & RV
what is infective endocarditis?
usually subacute bacterial
occurs on rheumatic or congenitally abnormal valves
can affect prosthetic valves
can be result of dental abscess
murmur can be present due to valvular vegetations
what is coronary artery disease?
coronary arteries are end arteries
-results in collateral circulation developing
infarction=anterior IV branch of LCA
circumflex branch of LCA
what is atrial fibrillation? (AF)
rapid, irregular contraction of dif parts of the atria
what is ventricular fibrillation? (VF)
rapid, irregular contraction of V
not compatible with systemic and coronary circulation
most disorganised form of dysrhythmia-cardiac arrest
describe the arterial system
systole causes expansion of arterial walls
recoild maintains arterial blood pressure during diastole
dlow regulated by varying diameter of capillaries
3 histological layers:
which arteries are elastic?
aorta, common carotid, subclavian, pulmonary
which arteries are muscular?
radial, femoral, coronary, cerebral