Complete the following paragraph to describe the common symptoms associated with the influenza virus. loss influenza immune system tyrosines epithelial lungs are cartilaginous are not lymphatic system heart cytokines gain gastroenteritis. One of the first symptoms of an ____ virus infecting the respiratory system is an accumulation of fluid in the ____. As the ___ cells lose their function, they undergo apoptosis, which in turn causes inflammation of the tissue. The inflamed tissue activates the ___. All other flu symptoms ___ the direct result of the influenza virus. The symptoms start after the release of chemical signals from the immune system's white blood cells, called ___ which alarm the organ systems of the body that a pathogen is present. Several effects on the body system due to the release of chemical signals from the immune system are a ___ of appetite, joint and muscle aches, headache, fever, and chills.