Question

Inflammatory chemicals cause arterioles to ________________ and increased capillary ___________________________. The group of 20 plasma proteins that are part of the 2nd and 3rd lines of defense is called _________________________ and it assists in destroying foreign substances. ___________________ are specialized lymphatic vessels that absorb fat. The ______________, a primary lymphoid organ, is the site for differentiation of lymphocytes into mature T cells. It ___________ as we age. In humoral immunity, specific B cells called ______________ cells secrete ______________, which bind to antigens. ____________ immunity is directed against pathogens in the extracellular fluid. This immunity involves ____ lymphocytes. ______________ immunity is directed against pathogens within the cells. This immunity involves ____ lymphocytes. NK cells kill like ______________ T cells; direct contact with a target cell causes it to undergo ______________, a form of cellular suicide. ___________________ occurs in the arm after axillary lymph node removal in a mastectomy.

Answer 1

Inflammatory chemicals ( leukocyte mediators eg. Histamine, bradykinin) cause arterioles to dilate and increased capillary blood flow. The group of 20 plasma proteins that are part of 2nd and 3rd line of defence is called and it assist in destroying foreign substances. Lacteals ( seen in the centre of villus) are specialized lymphatic vessels that absorb fat. The thymus , a primary lymphoid organ, is the site for differentiation of lymphocytes into mature T cells. It disappears as we age. In humoral immunity, specific B cells c plasma B cells secrete antibodies , which binds to antigens. Humoral (cell mediated immunity) immunity is directed against pathogens in the extracellular fluids. This immunity involves B lymphocytes. NK cells kill like cytotoxic T cells; direct contact with a target cell causes it to undergo apoptosis, a form of cellular suicide. Lymphedema ( it is a long term effect of lymph node surgery) in the arm after axillary lymph node removal in a mastectomy.