Lymphatic system + body defences Flashcards
(15 cards)
what are the 3 main functions of the lymphatic system
drain fluid, immune defence, transport fats/vitamins
where are lymphocytes made
Bone marrow
Where do T cells mature
Thymus
What are primary lymphatic organs
Red bone marrow and thymus
what are secondary lymphatic organs
Lymph nodes, spleen, diffuse lymphatic tissue
Is innate immunity specific or non-specific
Non-specific
What are first-line defenses
skin, mucous membranes, fluids, expulsion methods
what are second line defences
interferon, complement, phagocytes, NK cells, inflammation, fever
WHat type of cells are involved in adaptive immunity
B + T lymphocytes
What do B cells produce
Antibodies
What do T cells do
Directly kill abnormal cells
What do helper T cells do
activate B and T cells
what do cytotoxic T cells do
Kill virus-infected and cancer cells
What do memory T cells do
provide faster future responses
What is an antigen
a substance that induces an immune response
