Answer:
your answer would be sinus node (also called the sinoatrial node, or SA node).
Explanation:
<h2>O facial expressions</h2><h3>When you cry, you show emotions through your face. you are crying, and you're sad. Facial expressions show motions of the face that indicate feelings and emotions. So, the answer is facial expression.</h3>
Fortification!!!!
Hope this helps!!!!!!!!
