What is the function of the lymphatic system?
Function of the Lymphatic System
- Immune function = immunity
- Drain and filter fluid via nodes
What type of fluid does the lymphatic system filter and drain?
Filters and drains lymph fluid
- Lymph fluid = extracellular fluid
- Fluid outside the cells
What are the two types of extracellular fluid?
Types of Extracellular Fluid?
- In the blood = plasma
- Out of the blood = lymph
- Interstitual = tissue fluid
- In the tissue = interstitual fluid
- Out of the tissue = lymph
What is the general definiton of lymph nodes?
Lymph nodes = where you filter lymph fluid
What is the purpose of lymph nodes?
Purpose of Lymph Nodes
- To remove pathogens with WBCs
What are pathogens?
Pathogens = disease causing organisms
What types of WBCS are in the lymph nodes?
"Never Let Monkeys Eat Bananas"
- *Neutrophils (40-70%)
- Lymphocytes (20-49%)
- Monocytes (4-8%)
- *Eosinophils (1-4%)
- *Basophils (<1%)
What is an afferent pathway?
Afferent pathway = in/towards
What is an efferent pathway?
Efferent Pathway = out/away
Term for lymph nodes of the neck?
Cervical nodes = neck lymph nodes (tonsils)
What is the term for lymph nodes of the armpit?
Axillary lymph nodes
What is the term for lymph nodes of the groin?
Inguinal lymph nodes
What is the term for lymph nodes of the elbow?
Supratrochlear lymph nodes
What is the term for lymph nodes of the pelvis?
Pelvic cavity lymph nodes
What is the term for lymph nodes of the abdomen?
Abdomenial Cavity Lymph Nodes
What is the term for lymph nodes of the chest?
Thoracic Cavity Lymph Nodes
What does a swollen lymph node indicate
Swollen lymph nodes indicate:
- Infection due to an increase of WBCs
- In order to filter out more lymph fluid