There are multiple afferent lymphatic vessels and only a single efferent vessel in order to
slow the flow of lymph for maximal immune activity.
Which of the following structures is enclosed within a fibrous capsule? Peyer's patch, lymph node, lymphatic nodule, or tonsil
Which of the following cells does not have phagocytic capability? eosinophils, basophils, neutrophols, or histocytes
All of the following are signs of an inflammatory response except ____. heat, odor, swelling, or pain
Pyrogens, secreted by neutrophils and macrophages, function to
temporarily raise the set point of body temperature.
Which of the following act as "identification tags" which label an individual's cells as self cells? MHC proteins, haptens, epitopes, or interleukins
There are five classes of antibodies. Which one can cross the placenta to provide immunological protection for the newborn?
The human immunodeficiency virus can not be acquired by? sexual intercourse, blood, childbirth and breastfeeding, or donating blood
True or False - Lymphatic capillaries are composed of thin epithelial cells that loosely overlap each other, creating flaps that can open and close.
Lymphatic capillaries are anchored to the tissues by protein filaments that regulate lymph flow from tissues. When pressure in the tissue is high the _____ open and _____ is taken up into the vessel.
The three main functions of the lymphatic system include?
fluid recovery, immunity, lipid absorption
Lymphatic vessels are different from veins in that they have ______ and _______.
thinner walls; more valves
Which of the following inhibitors of microbial growth is a component of the perspiration on our skin? keratin, lactic acid, defensin, or mucus
Which of the following terms means to coat bacteria, making them easier to phagocytize by macrophages and neutrophils? opsonization, complement fixation, pyrexia, MAC coating
When a white blood cell manages to ooze through the gap between two endothelial cells on its way to attack an invader, we say it has exhibited ________________.
This type of leukocyte produces enzymes that will create hydrogen peroxide to kill bacteria.
Receiving gamma globulin as a treatment for rabies would be considered an example of natural active immunity, artificial active immunity, a vaccination, artificial passive immunity, or natural passive immunity
natural active immunity
These cells recognize non-self antigens and produce interleukins to stimulate the cells that actually make the antibodies.
Antibodies use all of the following mechanisms to attack pathogens directly except ________________.
If you were inoculated with hepatitis A vaccine, a population of this type of cell would begin to make the appropriate antibody.
When antibodies produced to react against bacteria also react against self-antigens, the resulting condition is an example of a(n):
Which of the four classes of hypersensitivity is a cellular immune response, and not a humoral immune response? Type I, Type II, Type III, Type IV
A form of immediate hypersensitivity in which an antigen triggers the release of inflammatory chemicals, causing edema, congestion, hives, and other, usually local, symptoms.
The movement of a cell along a chemical concentration gradient, especially the attraction of neutrophils to chemicals released by pathogens or inflamed tissues.
to complete or enhance the structure of function of something else, as in the coordinated action of two different hormones
a tissue usually composed of more extracellular than cellular volume and usually with a substantial amount of estracellular fiber; forms supportive frameworks and capsules for organs, binds, structures together, holds them in place, stores energy, or transports materials
a class of relatively small agranulocytes with numerous types and roles in nonspecific defense, humoral immunity, and cellular immunity
fenetically engineered bacteria that contain genes from humans or other species and produce proteins or that species; used commercially to produce clotting factors, interferon, insulin, and other products
A complex of tissue reponses to trauma or infection serving to ward off a pathogen and initiate tissue repair; recognized by the cardinal signs of redness, heat, swelling, pain, and compromised function
Lysozyme (aka Muramidase)
a secretion found in tears, milk, saliva, mucus, and other body fluids that destroys bacteria by disrupting their cell walls; variously regarded as a hydroltic enzyme or as a polysaccharide surfactant.
the fluid contained in lympatic vessels and lymph nodes, produced by the absorption of tissue fluid
Hildum (aka Hildus)
A point of the surface of an organ where blood vessels, lymphatic vessels, or nerves enter and leave, usually marked by a depression and slit; the midpoint of the concave surgace of any organ that is roughly bean-shaped, such as the lymph nodes, kidneys, and lungs.
any disease in which antibodies fail to distinguish between foreign and self-antigens and attack the body's own tissues; for example, systemic lypus, erythematosis and rheumatic fever
a protein of the gamma globulin class that reacts with an antigen; found in the blood plasma, in other body fluids, and on the surgaces of certain leukocytes and their derivatives
a cell that phagocytizes an antigen and desplays fragments of it on its surface for recognition by other cells of the Immune System; Chiefly Macrophages and B Lymphocytes
the rupture and destruction of a cell by agents as complement proteins and hypotonic solutions
The ability to ward off a specific infection or disease, usually as a result of prior exposure and the body's production of antibodies or lymphocytes against a pathogen. Compare Resistance
any cell of the body, other than a leukocyte, that is specialized for phagocytosis; usually derived from blood monocytes and often functioning as antigen-presenting cells
a small organ found along the course of a lymphatic vessel that fulters the lymph and contains lymphocytes and macrophages, which respond to antigens in the lymph
a population of cells that are mitotically descended from the same parent cell and are identical to each other genetically or in other respects
Cytotoxic T Cell
a T lymphocyte that directly attacks and destorys infected body cells, cancerous cells, and the cells of transplanted tissues
migration of formed elements of the blood through a capillary wall into the interstitial space
an organ system consisting of lymphatic vessels, lymph nodes, the tonsils, spleen, and thymus; functions include tissue fluid recovery and immunity
Acquired Immunodeficiency Syndrome
a group of condtitions that indicate severe immunosuppression related to infection with the Human Immunodeficiency Virus (HIV); Typically characterized by a very low T4 lmphocyte coynt and high susceptibility to certain forms of cancer and opportunistic infections
Helper T Cell
A type of lymphocyte that perfomrs a central coordinating role in humoral and cellular immunity; target of the Human Immunodeficiency Virus.
a delicate, branching macrophage found in the reticular connective tissue of the lymphatic organs
a type of lymphocyte involved in nonspecific defense, humoral immunity, and cellular immunity; occurs in several forms including helper, cytotoxic, and suppressor T cells and natural killer cells