Answer:
you know it's effective when you are either breathing or that if your breath has a smell or odor to it which can give people a bad impression on you then when you have a scent
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Explanation:
I believe it’s the first option, internal rotation, extension, and external rotation. hope i could help! :)
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Answer:
a. in the bottom of the atrium just above the ventricles
Explanation:
AV node -
It helps to control the heart rate , it serves as an electrical relay station , reduces the electrical current which is sent by the SA node .
The location of the AV node , is at the lower back section of the inter atrial septum , and conducts the electrical impulse normally from the atria to ventricles .
