<span>The order of impulse conduction in the heart, from beginning to end, is </span><span>SA node, AV node, bundle of His, bundle branches, and Purkinje fibers.
SA node, or the sinus node, is the heart's natural pacemaker. AV node, or the atrioventricular node, spreads electrical impulses from the atria to the ventricles. The bundle of His, as well as bundle branches, are a part of the electrical conduction system of the heart. Purkinje fibers send nerve impulses through the heart.
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Answer:
Polycythemia Vera
Explanation:
Polycythemia Vera can be described or known to be a type of blood cancer. And its effect is that, it makes the bone marrow to make or produce too many red blood cells, which can thicken the blood, slowing its flow, and can cause serious problems, such as blood clots, strokes, weakness among others.
Some of the symptoms of Polycythemia vera are
* Headaches, dizziness, and weakness.
* Shortness of breath and problems breathing while lying down.
* Feelings of pressure or fullness on the left side of the abdomen due to an enlarged spleen (an organ in the abdomen)
* Double or blurred vision and blind spots.
In conclusion, it should be understood that there is no cure for polycythemia vera. And treatment only focuses on reducing the risk of complications.
Answer:
Nuclear fusion
Explanation:
Nuclear fusion is a process whereby the nuclei of two smaller atoms combine to form a much larger atom, accompanied with the release of energy. This is opposed to nuclear fission where a larger atom splits into simpler and smaller atoms.
According to this question, the process of releasing energy when two stoms combine to form a larger atom is called NUCLEAR FUSION. A very common example of nuclear fusion is the combination of hydrogen atoms in the sun to produce Helium atom, with the release of heat energy.
