Answer/Explanation:
Cheerdancing and street dance both do routines and compete with them. In cheerleading you work on stunts, tumbling, flexibility, and workouts to make you stronger. In dance you work on leaps, flexibility, and combos to learn so you're able to move fluently.
Support movement, protection, blood cell production, calcium storage and endocrine regulation.
1. The cells of the SA node at the top of the heart are known as the pacemaker of the heart because the rate at which these cells send out electrical signals determines the rate at which the entire heart beats (heart rate).
2. septum : The septum is a thick wall of muscle that divides the heart. It separates the left and right sides of the heart.
3.The respiratory and circulatory systems work together to maintain homeostasis. The respiratory system moves gases into and out of the blood. The circulatory system moves blood to all parts of the body.
hope this helps! sorry I couldn't do all of them!
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