(Case 13) Immune defense against a thorn prick & bacteria Timmy, a 13-year-old boy lands himself…

(Case 13) Immune defense against a thorn prick & bacteria Timmy, a 13-year-old boy lands himself in a rose thorn bush while playing football with his friends. A large thorn protrudes from his bloody finger, which starts to swell, turn red, feel warm to the touch and throb with pain. Timmy doesn’t go home to have the cut cleaned and bandaged, and instead continues to wrestle around in the dirt and ignore his sore finger. The next morning, Timmy’s finger doesn’t look any better and he has a slight fever, greenish-pus and swelling down his finger. It seems Timmy’s has a bacterial 

»(Case 13) Immune defense against a thorn prick & bacteria Timmy, a 13-year-old boy lands himself in a rose thorn bush while playing football with his friends. A large thorn protrudes from his bloody finger, which starts to swell, turn red, feel warm to the touch and throb with pain. Timmy doesn’t go home to have the cut cleaned and bandaged, and instead continues to wrestle around in the dirt and ignore his sore finger. The next morning, Timmy’s finger doesn’t look any better and he has a slight fever, greenish-pus and swelling down his finger. It seems Timmy’s has a bacterial infection. Answer the questions below regarding how Timmy’s immune system attempts to prevent and fight the infection. List ONE external physical barrier and TWO external chemical barriers that attempted to prevent Timmy’s infection. State the functions. (3pts) Innate external barriers Functions External physical barrier: External chemical barrier #1: External chemical barrier #2: Since Timmy’s external barriers failed to prevent a bacterial infection in his finger, list the innate non-specific immune cells that are fighting off the infection and state their functions. (3pts). I have given you two below. Non-specific immune cells Functions Dendritic cells Neutrophils Which immune cell is responsible for the pus being discharged from Timmy’s finger? (1p) Which TWO innate non-specific internal barriers, are evident (that you can observe or measure) in Timmy’s infection? (1p) Which innate non-specific system uses a set of proteins to kill the bacteria causing Timmy’s infection? (1p). List 2 examples of internal antimicrobial chemicals in the body that are going to target and kill the bacteria and state their functions. (2pts) Internal antimicrobial chemicals Function

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