Human A&P Question 1 of 5 Mina cut her thumb while slicing a bagel. Two days lat

Question

Human A&P Question 1 of 5 Mina cut her thumb while slicing a bagel. Two days later her thumb is painful, red, swollen, and warm to the touch. Why? A. Cells in the epidermis are undergoing mitosis at a slower than normal rate. B. Lymph vessels in her thumb were severed by the knife. C. Histamine and prostaglandins are being released by damaged tissue cells and other cells. D. The blood vessels in her thumb are vasodilated and more permeable than normal. E. c and d Question 2 of 5 Which of the following is TRUE of the complement system? A. Activated complement proteins can cause cytolysis of microbial invaders, B. Activated complement proteins may act as costimulators to B cells. C. The major function of plasma cells is to secrete complement system proteins, The complement system attacks and and kills microbes bearing the specific antigen that elicited (caused) their production E. a and b Question 3 of 5 Imagine tracing the activity of one individual cell from each of the five kinds listed below. Which individual cell can attack and kill the broadest array of microbial pathogens? A, natural killer (NK) cells B. cytotoxic Tcells. C. helper T cells D. plasma cells E, pre-T cells Question 4 of 5 When a body cell presents a viral protein fragment coupled with MHC-1, which type of cell is most likely to recognize it? A. CD4 T cell B. CD8 T cell C. antigen-presenting cell (APC) D. B cell E. plasma cell Question 5 of 5 An exogenous antigen that has been processed and presented is... A. displayed on the plasma membrane ofan APC with MHC-II B, displayed on the plasma membrane of a CD4 T cell with MHC-1 C. a signal that the immunological threat has been eliminated from the body D. a signal the cell has become cancerous E. a signal that there are bacteria living inside the cell

Explanation / Answer

Option b is true, as WBCs start the function of inflammation and complementary system functioning because the invaders (infectors) come to contact

Option E is true. The cytolysis caused by mostly C3b, and B and Tcells require to activate by costimulators.

Option B is true because the antigen antibody recognition. Antibodies can form for various and unique antigens which make T cells very distinct.

Option B is true as it activates the CD8 receptor of T cell

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