| Question |
Answer |
| What is lymph |
A thin plasma-like fluid formed from interstitial or extracellular fluid |
| Foreign material such as debris or bacteria is filtered from the lymph in the |
Lymph nodes |
| The lymphatic system helps do what |
Absorb fat from the digestive tract, maintain fluid balance in the body, Fight infection |
| In the major blood capillary beds, the internal hydrostatic pressure causes a loss of how much fluid into the interstitial spaces |
3-4ml/min |
| What happens to the fluid that leaks out of the vessels |
It must be returned to the central venous circulation via the Lymphatic vessels. |
| Name the 2 great lymph vessels |
Thoracic ductlymphatic duct |
| What are the 2 roles of a lymphocyte |
Fight infection, provide immunity to certain infections |
| Diffuse lymphatic tissue is what |
tissue with no clear bounary that blends with surrounding tissues and contains lymphocytes and other cells |
| Name the 3 sets of lymphatic oragans that comprise the tonsils |
the palatine tonsilsthe pharengeal tonsilslingual tonsils |
| What does the thymus produce |
lymphocytes |
| The thymus plays a major role in what? |
immunity |
| What other system is integrally reelated to the lymphatic system |
the immune system |
| what is nonspecific immunity |
an immune response that is predictable each time the body is exposed to a perticular challenge. The rapidity and strength of the response is the same every time |
| What is Specific immunity |
the response to a given substance that is faster and stronger after each subsequent exposure. |
| Leukocytes move toward areas of bacterial invasion or forgien bodies via a process known as |
Chemotaxis |
| Which leukocytes are usually the first cells to enter infected tissue |
Neutrophils |
| What larger leukocyte cells are able to leave the bloodstream and enter diseased tissue |
Macrophages |
| Name the other Leujocytes that may play a role in fighting infection |
Basophils,Eosinophils Mast cells |
| Forgien substances are known as |
Antigens (allergens) |
| Antibodies that are found in the plasma are produced by |
B-lymphocytes, also called B-cells |
| What are the 5 classes of antibodies |
IgG,IgM,IgA,IgE,IgD |
| IgG comprises how much of the total serum antibodies |
80-85% |
| Where is IgA found |
IgA is found in Saliva, Tears, and on mucus membranes |
| Where is IgD found |
in cell membranes of B-cells. |
| IgE comprises how much of total serum antibody |
.002% |
| IgM is responsible for what type of reactions |
Blood transfusion |
| What cells carry out most cell-mediated immune functions |
T effector cells |
| What cells aid the T effector cells |
T helper cells |
| What cells limit the specific immune response |
T surpressor cells |
| When activated by an antigen, T cells differentiate into what |
T memory cells, and T effector cells |
| What cells remain in the body ready for a second challenge |
Tmempry cells |
| T effector cells produce |
lymphokines |
Science Vocab 147928
