Cardiovascular Disease

4-chambered

Atrium

Left

Right

Ventricle

Left

Right

Fist-size muscle

Located beneath ribs, under left breast

2 Circulatory systems

Deoxygenated blood

Pulmonary circulation

Right side

Oxygenated blood

Left

Systemic circulation

Systole

Heart contraction

Diastole

Heart relaxation

Veins

Carry blood to the heart

Arteries

Carry blood away from the heart

Capillaries

Exchange oxygen and nutrients

quarts of blood the hurt pumps in a minute

150 lb

5 quarts

once per minute

Risk factors

Tobacco use

1/5 deaths of CVD

Platelets become sticky and cluster

Clotting

High blood pressure

heart attacks and strokes

Kidney Failure

Measured with stethoscope

spygmomanometer

Normal pressure

115 systolic

75 Diastolic

30%

Unhealthy cholesterol

Carried in blood lipoproteins

LDL

Low density lipoprotein

Bad

below 100 mg/dl

total chol

below 200 mg/dl

HDL

High density lipoprotein

Good

Physical inactivity

Decrease blood pressure

increases HDL

desirable weight

controls diabetes

Obesity

Diabetes

Elevated blood glucose

Insufficient suply of insulin

Tobacco

2 Times more risk

Risk of stroke

increases blood pressure and heart rates

Damages linings or arteries

Reduces HDL

Raises

LDL

Triglycerides

Fatty deposits in arteries

Major risk factors

Set of genes increase CvD

Danger after 65

70%

CVD killer

Specially men earlier in life

Blacks and latinos more