Case Study # 3Chapters 21-221.A person gets a cut on his hand. After several days he notes swelling, pain, heat, and redness. Upon opening the wound to relieve the pressure, the presence of pus is noted. What has happened to the wound?2.Elderly people tend to develop cancer more frequently than younger people. Give an explanation for this observation that relates to immune function.3.A woman comes into the hospital emergency room complaining that she is having problems swallowing and her neck is swelling. She was involved in an automobile accident a couple of days ago but only bruised her neck. What could be the problem?4.Why do schools require inoculations for childhood diseases such as mumps, measles, and whooping cough? Why are the inoculations of value?5.While having a physical examination, a young male informed his doctor that at age 8 he had lobar pneumonia and pleurisy in his left lung. The physician decided to measure his VC. Describe the apparatus and method used for taking this measurement. Define the following terms used in the description of lung volumes: TV, IRV, ERV, RV, and VC.