Circulatory System Flashcards

Front

What does the venous system do?

Back

The venous system collects oxygen-depleted blood from the body and transports it back to the right-sided heart.

Front

What is the role of capillaries in the circulatory system

Back

Capillaries are responsible for the exchange of oxygen, nutrients, and waste products between blood and tissues.

Front

What are the resistance vessels?

Back

Arterioles

Front

What is Heart Rate

Back

Heart rate refers to the number of heartbeats per minute. It is measured in heartbeats per minute (beats/min).

Front

Stroke volume is essential for determining cardiac output, what is the definition?

Back

Stroke volume is the amount of blood ejected by the heart in a single contraction.

Front

The cardiac cycle consists of two basic phases: diastole and systole. Whick is the relaxed phase?

Back

Diastole is the phase when the ventricles are relaxed, allowing blood to flow passively from the left atrium (LA) and right atrium (RA) into the left ventricle (LV) and right ventricle (RV). Systole is the phase when the ventricles contract and eject blood into the aorta and pulmonary artery.

Front

List the Flow Types

Back

Flow types include steady flow, pulsatile flow, laminar flow (which can be further divided into plug flow and parabolic flow), disturbed flow, and turbulent flow. Laminar flow is smooth and orderly, while turbulent flow is chaotic and irregular.

Front

Does Low resistance allow more blood to flow to an organ, or less blood to flow to an organ?

Back

More blood to flow, higher metabolic demand