Heart Flashcards
Mediastinum
location of heart
Systematic Circulation
responsible for “whole” body circulation
Pulmonary Circulation
the heart transports “dirty blood” to the lungs to re-oxygenate the blood
Regurgitation
back flow of blood into chambers
Stenosis
narrowing of valve
Insufficiency
valve doesn’t close all the way
Untreated Strep Throat
rheumatic fever which harms the mitral (bicuspid) and aortic valve
Right Coronary Artery
supplies blood to right atrium
Marginal Branch
supplies blood to right ventricle
Left Coronary Artery
supplies blood to left atria and left ventricle
LAD or “widow maker”
supplies blood to both ventricles
Small Cardiac Vein
take deoxygenated blood from right atria and ventricle
Right Anterior Cardiac Vein
right ventricle
Middle Cardiac Vein
from right and left ventricle
Great Cardiac Vein
drain left atrium, right/left ventricle
Sinoatrial Node
generates the hearts rhythm
Bachman Bundles
carries impulses to left atrium
Atrioventricular Node
help carry impulse to Bundle of His
Bundle of His/ Purkinje Fibers
carries impulse to ventricles
P wave
atria contracting
QRS wave
ventricular contraction
S-T interval
end of contraction
T wave
ventricular relaxation, getting ready for next contraction
Tachycardia
hear beat per min over 100
Bradycardia
beats less than 40 per min
systolic
pressure being exerted on your artery wall
diastolic
pressure on artery wall during relaxation
Normal BP
systolic: less than 120
diastolic: less than 80
Elevated BP
120-129, more than 80
Crisis BP
over 180, 120 and higher
Stage 1 hypertension
130-139, 80-89
Stage 2 hypertension
140 or higher, 90 or higher
Blood Vessels
transport O2, eliminate CO2
Tunica Externa
contains nerves, structure and support
Tunica Media
contains elastic fibers to widen when needed, helps to keep blood going in one direction
Tunica Interna
made up of simple squamous epithelium helps regulate blood pressure, helps with no blood clotting
Arterioles
same 3 layers just not as big in diameter, primarily regulates blood pressure
Capillaries
smallest in diameter, gas exchange O2 in CO2 out, the higher the metabolism of the organ the more capillaries there are
venuoles
same layers as arteries but diameter is less
Veins
transport blood under low pressure, thinner walls, less elasticity
