Lymphatic System Lecture Notes PDF

 Lymphatic system Function  It collects the lymph & return it back to blood stream  It removes cellular debris & microorganisms vessels wy  It is part of immune system Formation...

 Lymphatic system Function  It collects the lymph & return it back to blood stream  It removes cellular debris & microorganisms vessels wy  It is part of immune system Formation  Lymphatic capillaries: da Blind-ended capillaries that drain lymph from extracellular spaces of tissues  Lymphatic vessels:  Lymph capillaries join to form lymph vessels en  They have valves to allow lymph flow in one direction  They have a characteristic beaded appearance H  Areas without lymphatic vessels includes  Cornea R.  Cartilage  CNS “central nervous system”  Bone marrow D  Teeth  Skin epidermis Anatomist “lymphatic system” 2  Lymphatic ducts: Lymphatic vessels unite to form lymph duct Right lymphatic duct:  Drains:  Right side of head, neck,  Right side of thorax wy  Right upper limb  Right side of upper surface of liver  Termination: da Junction between right subclavian & right internal jugular vein Thoracic duct:  Drains:  Left side of head, neck, en  Left side of thorax  Left upper limb  The abdomen except right side of upper surface of liver  The pelvis  The lower limbs H R.  Termination: Junction between left subclavian & left internal jugular vein D Anatomist “lymphatic system” 3   Lymphatic tissue: Lymph nodes o Definition: Small lymphatic tissue along lymph vessels through which lymph is rfiltered on its way to venous system o Lymphatics carry lymph to lymph node are afferent lymphatics wy o Lymphatics that carry lymph away from lymph node are efferent lymphatics o Important groups:  Cervical: for head & neck da  Axillary: for upper limb & breast  Mediastinal: for thorax  Aortic: for abdomen en  Iliac: for pelvis  Inguinal: for lower limb H R. D Anatomist “lymphatic system” 4 Lymphoid tissue:  Definition: Collection of lymphoid tissue other than lymph nodes  Types: wy 1. Adenoid “pharyngeal tonsil” 2. Palatine tonsils 3. Thymus 4. Spleen "largest tissue" da en H R. D Anatomist “lymphatic system” 5 1. One of the following is not considered as lymphatic tissue D A. Thymus gland B. Spleen C. Lymph nodes D. Thyroid gland 2. One of the following areas does not contain lymphatic vessels wy A A. Brain B. Lower limb C. Thorax D. Abdomen E. Pelvis da 3. Concerning lymphatic vessels choose the correct D A. Lymph vessels has straight appearance B. Lymph vessels are valveless C. Lymphatic vessels carry lymph to lymph nodes are called efferent vessels en D. They are absent in the cornea 4. Thoracic duct drains which of the following areas A A. Right big toe 5. D. Right eye H B. Right little finger C. Right lung One of the following is not considered as lymphoid tissue R. C A. Thymus gland B. Spleen C. Lymph nodes D D. Adenoid Anatomist “lymphatic system” 6 6. The largest lymphoid tissue is : B A. Thymus gland B. Spleen C. Palatine tonsil D. Adenoid 7. The breast drains into: wy C A. Cervical lymph nodes B. Mediastinal lymph nodes C. Axillary lymph nodes D. Iliac lymph nodes 8. The uterus drains into: da D A. Cervical lymph nodes B. Mediastinal lymph nodes C. Axillary lymph nodes D. Iliac lymph nodes en 9. The stomach drains into: C A. Cervical lymph nodes B. Mediastinal lymph nodes C. Aortic lymph nodes D. Iliac lymph nodes 10. The tongue drains into: H A R. A. Cervical lymph nodes B. Mediastinal lymph nodes C. Axillary lymph nodes D. Iliac lymph nodes D Anatomist “lymphatic system” 7