Darius Hadaegh Chapter 12 Lymphatic System
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22 Terms
What are the general functions of the lymphatic system?
conduct excess fluid(that filtered-out of the capillaries) from the tissues back to the cardiovascular system, filtration and phagocytosis of foreign agents, and production of lymphocytes
How does lymphatic fluid flow from capillaries to the heart
lymphatic capillaries - lymphatic collecting vessels - Lymphatic duct (right side) or Left Lymphatic duct- RT. Subclavian vein or LT. subclavian vein
What is the right lymph duct?
drains upper right quadrant of body
What is the left lymphatic duct?
drains remaining ¾ of body
What are lacteals
lymphatic capillaries specialized to absorb lipid- soluble nutrients from the intestinal tract
What are lymph nodes?
small round, or bean shaped, organs containing macrophages and lymphocytes
Where is there a large collection of lymph nodes?
Cervical, Axillary, vertebral, msentary
What is the spleen?
located in the upper left quadrant of the abdomen and composed of white pulp tissue and red pulp tissue
What is white pulp tissue?
Lymphocytes and macrophages
What is red pulp tissue?
Large venous sinuses
What are the additional functions of the spleen?
blood reservoir, destruction of worn out erythrocytes, and production of erythrocytes in the fetus only
What is the thymus?
located in the lower neck and mediastinum, astrophies after puberty
What are tonsillar tissue?
pharyngeal tonsil (adenoid), palatine tonsils (hard palate), lingual tonsil (tongue), lymphatic nodules of the intestine (Peyer’s Patches), appendix
What is lymphoedema?
lymphatic swelling
What are autoimmune diseases?
conditions where the body’s immune system mistakenly attacks the body’s own healthy cells and tissues
What is lupus erythematosus?
skin
What is rheumatoid arthritis?
Joint
What is rheumatic heart disease?
valve
What is myasthenia gravis?
skeletal muscles
What is multiple sclerosis?
Nervous system
What is ulcerative colitis?
digestive system
What is juvenile onset diabetes?
Endocrine system