Atrial

... cardiac inhibitor, and the sympathetic nerves are the cardiac excitors. Stimulation of the vagus nerve depresses the rate of impulse formation and atrial contractility and thereby reduces cardiac output and slows the rate of the... * human digestive system ( in human digestive system: Blood and ...

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... answer these, explain them, or tell me where to look to find the answers. 1-How can kidney stones be prevented? 2- what role do aldoserone and atrial natriuretic hormone affect the production of hypertonic urine?

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As cardiac nerve transmission flows through the pathway of SA Node, atrial syncytium, junctional fibers, AV Node, Bundle of His, Purkinje fibers, and finally, ventricular syncytium - at what point along this pathway does ventricular depolarization actually ...

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... all of the heart's cells possess the ability to generate the electrical impulses (or action potentials) that trigger cardiac contraction, the sinoatrial node is what normally initiates it, simply because it generates impulses slightly faster than the other areas with pacemaker potential. Because ...

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I am confused about the bainbridge reflex and barorecptors effect on HR. Bainbridge responds to increased atrial volume( ie, increase venous returen) or atrial distension and it actually increases heart rate in turn. The barorecpetors on the other hand feel the strech and increased ...

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