The SA node sends out regular electrical impulses from the top chamber )the atrium) causing it to contract and pump blood into the bottom chamber (the ventricle).
Answer:
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Explanation:
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Corpus callosum is the name of the network of fibres which acts as a bridge between the two hemispheres of the brain.
R- Rest (try to stay off of the injury for a few days)
I-Ice (ice the injury multiple times a day, but not directly to the skin).
C-Compress (compress the injured area with a elastic bandage, for example).
E-Elevate (elevate the injury adequately above the heart on a pillow).
hope this helps
