PLTW HBS Heart

Characteristics of a Vein?

Thin walls, valves, carry deoxygenated blood TOWARD heart.

Characteristics of an Artery?

Thick walls, carry oxygenated blood AWAY from heart.

Characteristics of a Capillary?

Thin 1 cell-thick walls, gas exchange.

Cardiac output formula?

Cardiac output (ml/min) = stroke volume (ml/beat) x heart rate (beats/min).

How to convert ml/min to l/min?

Move the decimal 3 places.

What is the highest arterial pressure called?

Hypertension.

Function of a valve?

Prevents backward flow of blood through the heart.

Right ABI equals ratio of what?

Higher right ankle pressure (PT or DP)/Higher arm pressure (right or left).

Left ABI equals ratio of what?

Higher left ankle pressure (PT or DP)/Higher arm pressure (right or left).

Overall ABI is what?

The lower ABI between right and left ABI.

What connects veins and arteries?

Capillaries.

What are varicose veins?

A vein that has become stretched and swollen with blood.