Examlex
The heartbeat is initiated by an electrical impulse that originates at the ____________.
Blood Pressure
Blood pressure is the force that circulating blood exerts against the walls of blood vessels, essential for maintaining the body's circulatory function.
Capillaries
The smallest blood vessels in the body's circulatory system, facilitating the exchange of water, oxygen, carbon dioxide, and other nutrients between blood and tissues.
Pulse
The rhythmic throbbing of the arteries as blood is propelled through them, typically palpable at body sites where arteries are close to the skin surface.
Diastole
Relaxation of the heart chambers, during which they fill with blood; usually refers to ventricular relaxation.
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