Chapter 16: Lymphatic System
What term refers to any molecule that elicits an immune response?
Antigen
What type of immunity will result from receiving a vaccination?
Artificially acquired active immunity
What term is used for disorders resulting from the immune system attacking "self" cells?
Autoimmune diseases
In order to be fully activated, most __________ cells require interaction with __________ cells.
B; T
When T or B cells are activated, they proliferate, forming a group of genetically identical cells descending from the original activated cell. What is the name of this group of identical cells?
Clone
Activation of what group of proteins in the plasma leads to inflammation, attraction of phagocytes, and enhancement of phagocytosis?
Complement
Absence or blockage of lymph vessels in a body region leads directly to what condition?
Edema
The thymus enlarges after puberty.
False
What class of immunoglobulin is involved in immediate-reaction allergic reactions?
IgE
What is the name of the fluid contained within vessels of the lymphatic system?
Lymph
Lymph eventually is returned to the circulation at what blood vessels?
Right and left subclavian veins
Allograft
Same species
Memory T and B cells function in what type of response?
Secondary immune responses
What is not true of the spleen?
The spaces in the lobes of the spleen are filled with lymph.
What is the first component(s) of the immune system to decline with age?
Thymus
Muscle contraction moves lymph through lymphatic vessels.
True
Older red blood cells may be destroyed in the spleen.
True
The thymus is in the mediastinum behind the sternum.
True
xenograft
different species
The region of a lymph node through which blood vessels and nerves pass is called the
hilum
isograft
identical twin
Lymph differs from plasma in that
plasma has more protein than lymph
autograft
self
The two collecting ducts that drain the lymphatic trunks are the
thoracic duct and right lymphatic duct.
Lymphatic pathways begin at the lymphatic capillaries which empty into lymphatic vessels. From there, fluid flows through lymphatic __________ into lymphatic __________, eventually emptying into veins in the thorax.
trunks; ducts
The structure of a lymphatic vessel is most similar to that of a(n)
vein