Topic 13

Protects the body from infectious disease. Involved in tissue repair and protection against potential pathogens

Lower leucocyte numbers cause by the stress of the exercise white blood cells are used for tissue repair and less to destroy pathogens DOMS causes inflammation and concentrates white blood cells there missing from the rest of the body Intense, deeper breathing causes more pathogens (airborn bacteria) to enter the body Increased levels of cortisol whichsupress the immune system J curve shows relationship between exercise intensity and susceptability to disease Immune system must wtihstand infection even during severe physiological and psychological stress

Recovery time (ratio of exercise and rest to allow the body to recover) avoid close contect to people with infections Maintain oral hygiene Showering after exercise (toxins come out in sweat) Hydration (flush out pathogens through urine and kidneys serve as filters) Ensure water is pathogen-free Avoid hand to mouth contact Maintain a suitable and varied diet so the body can get the nutrients it needs Ensure sufficient sleep to help with recovery and restoring energy

Innate: Physical Skin - Serves as a barrier against pathogens Epithelial linnings - barrier for organs and blood vessels Mucosal secretions - capture pathogens before entering the body and take them out sneezing Leucocytes: white blood cells which fight disease distroying them inside their cell Adaptive Inflammation - removes injurious stimuli and initiating the healing process Clooting - prevents the body from bleeding out Lymphocytes and antibody production B cells produce antibody molecules that can latch on and destroy viruses or bacteria T cells produce cytokines which help activate other parts of the imune system

Decrease in innate and adaptive immune function - Increased levels of cortiso and adrenaline - Low levels of leukocytes - Increased tissue damage and inflammation