Bio47S11HO23

Bio47S11HO23 - Biology 47 - Human Anatomy Lecture 23...

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1 Biology 47 - Human Anatomy Lecture 23 Nervous Tissue Lymphoid System Components : 1. Lymph vessels : Close ended tubes collecting : Interstitial fluid / intercellular fluid / Extracellular fluid 2. Lymph : Interstitial fluid circulating in : 3. Lymphoid tissues and organs : Produce lymphocytes and adjust : Bone marrow, spleen, thymus, tonsils, lymph nodes and nodules Functions : 1. Immune: Produce, maintain, and distribute : a. Primary Lymphoid structures: House Stem Cells: Produce : Bone marrow & thymus b. Secondary Lymphoid tissues: House lymphocytes: Initiate immune responses: Activated lymphocytes divide to : Initiate : Tonsils, spleen, lymph nodes & nodules 2. Maintain blood volume / pressure : a. Return interstitial fluid to circulation:
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2 15% of interstitial fluid is returned through : Lymph returned into: Thoracic duct : Returns fluid from : Right lymphatic duct : Returns fluid from: 3. Re-circulate absorbed lipids from digestive tract : a. Lacteals: Nervous System : Internal Communication system a. Collects : b. Distributes : Commands – Muscle and Glands c. Processing / Integration: Sensory & Motor
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3 Structure (Anatomical) Division : 1. Central Nervous System ( CNS ) : • Consists of Central Tissue : Brain : Spinal Cord : • Functions : a. Internal
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Bio47S11HO23 - Biology 47 - Human Anatomy Lecture 23...

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