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4.2 Key terms (Hypertension (An abnormally high blood pressure.), Pulse…
4.2 Key terms
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Pulse
The rhythmic expansion and recoil of arteries resulting from heart contraction; can be felt from the outside of the body.
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Bundle branches
are offshoots of thebundle of His in the heart's ventricle. They play an integral role in the electrical conduction system of the heart by transmitting cardiac action potentials from the bundle of His to the Purkinje fibers.
Sinoatrial (SA) node
A small mass of tissue that is made up of Purkinje fibers, ganglion cells, and nerve fibers, that is embedded in the musculature of the right atrium, and that originates the impulses stimulating the heartbeat -- called also S-A node, sinus node.
Carotid Pulse
The carotid sinus, or carotid bulb, is a widening of acarotid artery at its main branch point. The carotidsinus contains sensors that help regulate blood pressure.
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Pacemaker
An electrical device for stimulating or steadying the heartbeat or reestablishing the rhythm of an arrested heart.
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Blood Pressure
Pressure exerted by the blood upon the walls of the blood vessels, especially arteries, usually measured by means of a sphygmomanometer and expressed in millimeters of mercury.
Radial Pulse
the rate at which the heart beats; usually measured to obtain a quick evaluation of a person's health.
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Purkinje fibers
are split in ventricles walls. The electrical origin of atrial Purkinje fibers arrives from the sinoatrial node.
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