From Chapter 23: Personnel Retention, p.344, answer the three (3) questions posed and demonstrate your knowledge and comprehension of contents and concepts introduced using minimum 350-word count.
The Heart
The heart is a muscular organ located in the thoracic cavity. It consists of four chambers: two atria (upper chambers) and two ventricles (lower chambers). Pick an activity that you would anticipate changing your heart rate. Describe what would happen to your heart during that activity (i.e., increasing or decreasing heart