110 likes | 239 Views
Human Anatomy. The Lymphatic System. Function(s). Production, maintenance and distribution of lymphocytes Maintain normal blood volume. 1. Lymphocytes. White blood cell Confer immunity against: Bacteria and viruses Cancer cells Foreign proteins i.e., toxins.
E N D
Human Anatomy The Lymphatic System
Function(s) • Production, maintenanceanddistribution of lymphocytes • Maintainnormal blood volume
1. Lymphocytes • White blood cell • Confer immunity against: • Bacteria and viruses • Cancer cells • Foreign proteins i.e., toxins
2. Maintain Blood Volume Interstitial fluid Lymph
Components • Lymph ducts • Lymph nodes – comprised of lymphocytes • Lymph nodes will become enlarged when reacting in an immune response • Infection • Allergenic reaction
Lymph Returned to Blood • Lymph is drained into venous system at junction of internal jugular and subclavian on R&L sides
Thoracic Duct Thoracic duct is the largest lymph duct in the body. It drains into junction of Left internal jugular and left subclavian veins.
Breast Cancer • Primary cause of death in women between 35 – 45 yo. • Risk factors • Family history • Pregnancy after 30 yo. • Early menarche (1st menstrual period) • Late menopause (last menstrual period)
Lymph Node Analysis • Lymph drains first to the axillary nodes • If cancer cells are not detected in axillary nodes (spread), 5-year survival is 82%. • If 4 or more axillary lymph nodes contain cancer cells, survival rate drops to 21% • Successful treatment begins in early detection when the tumor is very small.