Lymphatic Flashcards
2 functions of the lymphatic system.
- Transports escaped fluids from the cardiovascular system back to the body
- Plays essential roles in body defense and resistance to disease
Which way does Lymph flow?
Toward the heart; one way system
What does the thoracic duct do?
It drains the lymph from the body other than the right side.
Lymph transport is aided by what?
- Milking action of skeletal muscles
- Pressure changes in thorax during breathing
- Smooth muscle in walls of lymphatics
Defense cells within lymph nodes are…
Macrophages and lymphocytes
Name the Lymphoid organs
- Spleen
- Thymus
- Tonsils
- Peyer’s patches
- Appendix
- Red bone marrow
- Lymph nodes
- Lymph vessels
What does MALT stand for?
Mucosa-associated lymphoid tissue
What are the 2 mechanisms that make up the immune system are?
Innate defense system and adaptive defense system
What is in the first line of defense?
-skin
* Mucous membranes
* Secretions of skin and
mucous membranes
What is in the second line of defense?
- Phagocytic cells
- Natural killer cells
- Antimicrobial proteins
- The inflammatory response
- Fever
What is in the third line of defense?
- Lymphocytes
- Antibodies
- Macrophages and other
antigen-presenting cells
What are the four most common indicators of acute inflammation?
- Redness
- Heat
- Pain
- Swelling
What is the normal body temperature and what regulates it?
37 degrees and the hypothalamus
What are the two arms of the adaptive defense system?
humoral immunity & Cellular immunity
What are antigens?
Any substance capable of exciting the immune system and provoking an immune response
