Answer:
<em> 40-50 percent
</em>
Explanation:
To prepare for the major endurance, one must ensure to put 40-50 percent of carbohydrates in their diet because carbohydrates are the major source of energy. Our body first uses the energy from carbohydrate metabolism. If there is not enough carbohydrate in the body then fats are used as an energy source and then the proteins.
If there is enough carbohydrate in the body then one can perform enough functions and physical activities but the lack of it can make people lethargic and inactive and also affect mental health.
I think it’s enzymes I hope that works
Answer:
"AV node" receives the depolarization wave from the atria and passes impulses onto the ventricles.
Explanation:
The atrioventricular node or AV node is a portion of the electrical conduction system of the heart that organizes the top of the heart. It electrically attaches the atria and ventricles. The AV node is a bunch of cells in the middle of the heart among the atria and ventricles, and performances like a gate that decelerates the electrical signal before it enters the ventricles. This postponement gives the atria time to contract before the ventricles do.
