Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
35 Cards in this Set
- Front
- Back
|
function of
-arteries
-veins |
-blood~ heart-->body
-blood~body-->heart |
|
|
How do veins and arteries differ? Why? |
arteries are thick, muscular walled to handle the pressure of the blood as it is carried around the body |
|
|
How do the lungs and heart work together to pick up and deliver oxygen to the cells? |
the heart pumps blood to the lungs to pick up oxygen and then the heart pumps the blood to the cells |
|
|
What is the difference between pulmonary and systemic circulation? |
pulmonary: blood~~ heart-->lungs-->heart
systemic: blood~~ oxygenated blood-->body deoxygenated blood-->heart |
|
|
What are two common pulse points used to measure heart rate? |
carotid pulse: neck
radial pulse: wrist |
|
|
What is blood pressure? |
pressure of circulating blood on vessel walls |
|
|
Systolic Pressure |
left ventricle (heart pumping) |
|
|
diastolic pressure |
between heart contractions |
|
|
hypertension |
abnormally high blood pressure |
|
|
What is the purpose of an EKG? |
measure electrical activity of the heart |
|
|
P wave |
atria contractions
SA node--> AV node |
|
|
QRS complex |
ventricular contraction
bundle of His and purkinji fibers |
|
|
T wave |
ventricular repolarization
|
|
|
sinoatrial node |
pacemaker |
|
|
atrioventricular node |
connects atria and ventricule chambers |
|
|
perkinjie fibers |
contracts ventricles |
|
|
bundle of His |
carries impulse from AV node to heart apex |
|
|
What is cholesterol? |
lipid |
|
|
What role does cholesterol play in our cells and body? |
-component of cell membrane -precursor molecule to steriods/Vitamin D -learning and memory -digestion and bile acids |
|
|
LDL |
carries cholesterol to tissues/cells |
|
|
HDL |
carries cholesterol to liver |
|
|
Risks of High Blood Pressure |
heart attack/stroke metabolic syndome weakened vessels/atheroslcerosis heart failure aneurysm |
|
|
treatments for high blood pressure |
ACE Inhibitor Beta-blockers |
|
|
What is hypercholesterolemia and how is it inherited? |
-caused by defective LDL receptors which increase LDL in blood resulting in an increased risk of heart attack
-autosomal dominant trait |
|
|
What is the function of stains and how do they work to lower cholesterol levels in the body? |
they inhibit an enemy that produces cholesterol in the liver, lower triglycerides, raise HDL levels, stabilize plaque in the arteries |
|
|
atherosclerosis |
hardening of the arteries |
|
|
What are the main contributing factors of atherosclerosis? |
high blood pressure smoking high cholesterol |
|
|
Stent |
mesh inserted into vessels holding vessel open |
|
|
CABG surgery |
blood rerouted around blockage through a vessel taken from leg, attached before and after blockage |
|
|
angioplasty |
balloon pushes plaque against vessel walls opening up passageway for blood |
|
|
arteries carry oxygenated blood except __- |
pulmonary artery |
|
|
veins carry deoxygenated blood except ___ |
pulmonary vein |
|
|
4 valves in the heart |
bicuspid (mitral)
tricuspid
aorta
pulmonary artery |
|
|
function of biscuspid valve |
left atrium-->left ventricle |
|
|
causes of metabolic syndrome |
waist circumference fasting blood sugar high triglycerides high cholesterol (low HDL) high blood pressure
need to have 3 |
