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Chordae tendinae anchor the flaps of the atrioventricular valves into the papillary muscles.

Oxygen poor blood from the arms will return to the heart by way of this vessel:

The link between the Nervous System and the Endocrine System is the hypothalamus gland.

This hormone is responsible for male secondary sex characteristics:

This innermost layer of the heart prevents blood clots from forming:

By convention, blood pressure is most commonly measured at this artery:

Idenfiy this chamber: ;

This artery, the largest in the body, distributes oxygenated blood to all organ systems:

Cardiac output is the amount of blood pumped by the left ventricle in one minute.  It is equal to stroke volume multiplied by heart rate.

Veins have valves to prevent pooling of blood in the legs.