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Naomi Patino period 3 19-3-23 - Coggle Diagram
Naomi Patino period 3 19-3-23
Major Function of the lymphatic & immune system
Lymphatic system
It returns excess tissue fluids to the blood vascular system via the lymphatic vessels.
Act as the body defense and resistance to disease
Immune system
fight disease-causing germs (pathogens) like bacteria, viruses, parasites or fungi, and to remove them from the body,
Defends body against infections which protects the body's owncells
Purpose of first, second and third line of defense
First line
Innate defense or immunity-->Acts on many types of pathogen and respond immediately
Ex-->mechanical & chemical barriers, natural killer cells, inflammation, phagocytes, and fever
Mechanical barriers
Second line
Inflammation
Innate defense or immunity-->Acts on many types of pathogen and respond immediately
Ex--> Natural cell killers and Phagocytes (fever)
Third line
respond against specific type of pathogen, respond more slowly, carried out by specialized lymphocytes or antibodies
adaptive defenses or immunity
Antigen & Antibodies
Antigen
substance that triggers an immune response; a "nonself molecule that immune response is directed against
Antibody
a protein that acts against a specific antigen; involved in humoral immune response; aka immunoglobulin
cells involved in the immune system
Natural killer cells
type of lymphocytes that can destroy cancer cells and virus-infected cells; an important component of innate immunity; second line of defense
Helper T cells
type of T lymphocyte that activates B to produce antibody and other T cells
Memory T cells
type of T lymphocyte that provide a quick response to future exposure t same antigen
B Cell
differentiates into antibody-producing plasma cell
Memory B cell
remain dormant and become activated if the same antigen appears at a later date to produce plasma cells
Cytotoxic T cells
T lymphocyte that kills infected body cells and cancer cells
Location of Lymphatic organs and their functions
Spleen
Largest lymphatic organ it filters blood - where immune response is initiated against foreign substance in the blood - removes aged and worn out erythrocytes
Thymus
here T-lymphocytes mature and differentiate; most active in childhood; sits on top of the heart
Lymph nodes
"filter lymph- where immune response is initiated against foreign substances in lymph; site of lymphocyte production"
Bone marrow
Produce blood cells
Lymphatic vessels
"large vessels with valves, which collect and carry lymph to lymph nodes"
humoral response & cellular response
humoral response
A branch acquired immunity that involves the activation of B cells and that leads to the production of antibodies, which defend against bacteria and viruses in body fluids.
Cellular Response
T cells response through cell-to-cell contact and attach directly to antigens and destroy them
Innate immune defense and adaptive immune defense
Innate immune defense
nonspecific defenses; acts on many types of pathogen and respond immediately
Example-->mechanical & chemical barriers, natural killer cells
adaptive immune
specific defenses; respond agains specific type of pathogen, respond more slowly, carried out by specialized lymphocytes or antibodies; third line of defense
Passive vs Active immunity
Passive
short-term immunity obtained by receiving antibodies; short-term immunity
Gained from someone else
Active
occurs due to exposure to antigen; body produces its own antibodies against disease-causing antigens; forms long-lasting immunity
Your own immune system builds it.
Artificial vs Naturally acquired immunity
Artificial
Antibodies made due to exposure to vaccine
Antibodies are gathered from a human or other animal (Injection of anti bodies
Natrual
passed from mother to fetus via the placenta and breast milk
develops after exposure to antigens in environmen