lymphatic system Flashcards
lymphatic (65 cards)
one way system of vessels much like capillaries and veins
lymphatic system
contain small door like valves that are pushed open by high fluid pressure tissue
lymphatic capillaries
converge somewhat like veins becoming larger and less numerous as they do so
lymphatic vessels
how are lymphatic vessels similar to veins?
thin, low pressure vessels, contain semilunar valves,
small balls of collective tissue with macrophages and lymphocytes to serve and filter toxins and attack disease organisms
lymph nodules
consists of several nodules often grouped in areas such as the axillary and groin
lymph nodes
where does fluid from the right portion of the body converge to?
The right lymphatic duct, which dumps into the right subclavain vein
lymph from the rest of the body converges into the thoracic ducts dumps into the
left subclavian vein
true or false: non specific defenses are technically not a part of the immue system
true
What are examples of non specific defense
skin and most muscous membranes, HCL in stomach, white blood cells, anti-bacterial enzymes in tears, and saliva
responds to chemicals released by damaged tissues
inflammatory response
Inflammatory response includes the following symptoms
pain, swelling, and heat with inflammation
The main cells of the immune system
lymphocytes
lymphocytes target foreign
antigens
Two categories of lymphocytes are
B cells and T cells
Cells that mature in the bone marrow and thymus
B Cells and T Cells
antibody producing cells
B Cells
What are the three populations of T cells?
Tc cell , Th cell, Ts cell
Cells that remain dormant unless they are presented with the antigen again
memory cells
cells that begin producing antibodies
plasma cells
When do Tc cells and Th cells become activated?
When they plug into antigens that are displayed by macrophages
When Tc and Th cells plug into an antigen, what gets stimulated ?
T Cells which stimulate mitosis
proteins which slightly resemble . a Y shape set of handcuffs on a stick
immunoglobins/ antibodies
Two most common antibodies
IgG and IgM