Three main functions of the Circulatory System?

Transportation Homeostasis Protection

Three major parts of the Circulatory System?

Heart Blood Vessels Blood

The heart is located within the _______ cavity

thoracic

Heart functions?

Pump blood throughout the body Keep oxygenated blood separated from deoxygenated blood Keep blood flowing in one direction (AWAY from heart in arteries, TOWARD heart in veins)

How many chambers does the heart have?

Four

Heart Diagram for reference

For memory: AV inside (atrium-ventricle) right and left switched and AV for pulmonary artery/vein For valves, AMPT going counter-clockwise starting from bottom right

Atrium function?

Collects blood flowing into heart

Ventricle function?

Receives blood from the atrium and pumps it out to the body/lungs

The left side of the heart receives what kind of blood?

Oxygen rich, pumps to body

The right side of the heart receives what kind of blood?

Oxygen poor, pumps to lungs

What is the septum?

Muscular wall separating left and right sides of the heart

Pulmonary Vein function?

Carries oxygen-rich blood from the lungs to Left Atrium

Pulmonary Artery function?

Carries oxygen-poor blood from the Right Ventricle to the lungs

Aorta function?

Carries oxygen-rich blood away from the Left Ventricle to all regions of the body (except lungs)

Superior Vena Cava function?

Collects oxygen-poor blood from the UPPER body and returns it to the Right Atrium

Inferior Vena Cava function?

Collects oxygen-poor blood from the LOWER body and returns it to the Right Atrium

Mitral (Bicuspid) Valve ensures blood flow where?

From Left Atrium to Left Ventricle

Tricuspid Valve ensures blood flow where?

From Right Atrium to Right Ventricle

Aortic (Left Semilunar) Valve ensures blood flow where?

Left Ventricle to Aorta

Pulmonary (Right semilunar) Valve ensures blood flow where?

Right Ventricle to Pulmonary Artery