- Briefly describe the process of inflammation in an area that has been traumatized.
- Vasodilation - The arterioles vasodilate allowing more blood to go to the damaged area while the permeability of capillaries is increased allowing antibodies and clotting factors to aid in the response of the trauma. Some of the substances that contribute to the vasodilation of arterioles and increased permeability of capillaries are histamine, kinins, prostaglandins, leukotrienes, and complement.
- Emigration of phagocytes - Neuotrophils and macrophages then travel towards the trauma phagocytizing damaged tissue, worn-out neutrophils, and foreign substances. This is the stage where pus is formed.
- Tissue repair
- Choose one type of Immunity (Innate and Humoral) and explain how its mechanism protects our body.
- Innate immunity involves an outer and inner defense
- External and chemical barriers like the skin and mucous membranes - act as the first line of defense. This prevents pathogens from entering the body.
- Internal defenses like antimicrobial substances, natural killer cells, phagocytes, inflammation, and fever - act as the second line of defense. When the pathogens are able to pass through the first barrier, these internal defenses are what phagocytize and repair the area, and generally maintain homeostasis.
- Innate immunity involves an outer and inner defense