Unit I: Lymphatic System and Immunity. Competency: 1H09. Analyze the anatomy and physiology of the lymphatic system. Specific Objectives: 1H09.01- Describe the structure of the lymphatic system. 1H09.02- Analyze the function of the lymphatic system.
1. LYMPH- fluid that goes between capillary blood and tissues.
Produce lymphocytes, filter out harmful bacteria. A cluster of lymph nodes can be found under the arms and neck.
INTERSTITIAL FLUID or tissue fluid because it is in the spacesbetween cells
Composed of H2O, lymphocytes, some granulocytes, O2, digested nutrients, hormones, salts, CO2, and urea.
NO red blood cells or protein molecules (too large)
Located in almost all tissues and organs that have blood vessels
Tissue lymph enter small lymph vessels which drain into larger vessels called lymphatics – they flow into one of two large, main lymphatics – the THORACIC DUCT (largest vessel) and right lymphatic duct.
THORACIC DUCT gets lymph from left side of chest, head and neck, abdominal area and lower limbs left subclavian vein superior vena cava heart.
Lymph flows only in one direction – from body organs to the heart.Lymph Vessels
NATURAL IMMUNITY – at birth, inherited and permanent. Includes:
Mucus and tears
ACQUIRED IMMUNITY – body’s reaction to invaders
Rx – chemotherapy and radiationHODKIN”S DISEASE
Emergency treatment for anaphylaxis