Lymphatic System and Immunity

Marieb, Chapter 21(Lymph), 22(Immunity)

 

Compare contrast w/cardiovascular system

FUNCTIONS: (4)

Lymphatic System

• small lymphatic capillaries

• merge to from larger and larger vessels

• lymph nodes

Lymph Fluid

• Flow affected by (4):

• Composition:

Nodes and Organs (4)

Spleen (4 functions)

Thymus gland

Hodgkins Disease

Body Defenses

Non-specific defenses

(no antibody production)

1) First line of Defense - Outer Coverings

• skin

• openings

2) Inflammatory Response - punctures, abrasions, burns

- histamine

- pyrogens

• WBCs migrate

Interferons

The Immune response

Antigens

Antibodies

protein that attaches to an antigen on bacteria and viruses

produced by B cells

1 billion antibodies

30-100 genes

genes-shuffle-huge combination-abiltity to recognize

any forgein material

- B Cells - Active and Passive Immunity

1) person first exposed

2) subsequent exposure

structure

5 classes

Process

2 ways to destroy micro-org's

1) antibodies and macrophages

2) Complement Reaction

Process

Major Histocompatibility Complex

Function

Mechanism of action

T-Cells

1) Killer T

2) Helper T

3) Supressor T

Vaccinations

Allergies:

• cause

• reactions

• treatments

1) antihistamines

2) immunosupressive drugs -

3) desensitization

AIDS

• caused by HIV virus

• symptoms

• statistics

• transmission

Virus - retrovirus

Treatments: (no cure yet)