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24 Cards in this Set
- Front
- Back
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composition of Lymphatic system?
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1) LYMPHATIC VESSELS: transport tissue fluids tissue spaces (Intersitial Space) to the ----> Blood
2) LYMPHATIC TISSUE: contain Phagocytic Cells & Lymphocytes to help body resist disease |
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LYMPH VESSELS
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A) as Plasma leaves blood & Enters-->Tissue spaces= Interstitial Fluid as mixes w/ fluid secretions; as interstitial fluid enters-->LYMPHATIC VESSELS it = *LYMPH!
B) 1-way transport (of Lymph) = From tissues to--> R&L SUBCLAVIAN VEINS C) types of Lymphatic Vessels & organization |
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LYMPH CAPILLARIES
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=Blind-ended Vessels that are found btwn. tissues & blood capillaries in LOOSE CT (LCT)
a. found where blood capillaries are found (NOT IN: B. Marrow, teeth, Epithelia, or CNS) b. 1-Way-Mini-Valves= LOOSE, Overlapping nature of Endothel. cells of Lymph Capillary Walls= allows easy entrance of: Interstitual Fluid, Cellular debris, bacteria, viruses, & cancer cells into---> Lymph Capillaries c. LACTEALS: specialized Lymph Capillary in Digest. Tract (in VILLI of SI) Receive many Large FATS (aka CHYLOMICRONS). Lymph in this area appears Milky White & called, "CHYLE" |
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2. LYMPHATIC COLLECTING VESSELS
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= formed by the UNION of several Lymph Capillaries. Are LARGER, Thick-walled vessels
a. similar to VEINS (3 Tunics): Thinner walls, MORE valves, make MORE Anastamoses b. travel along same path as Arteries or Veins |
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LYMPHATIC TRUNKS
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= formed from COLLECTING VESSELS;
**DRAIN Large Body areas |
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LYMPHATIC DUCTS
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= LARGEST Lymph Vessels in THORACIC & ABDOM. Regions
form by union of LYM TRUNKS |
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RIGHT Lymphatic Duct
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= Drains the RT-Upper Arm, Rt-side (of Head & Thorax) INTO --------->RT. SUBCLAVIAN VEIN
b. THORACIC DUCT: Largest duct, drains Rest of Body into-------> LEFT Subclavian Vein CISTERNA CHYLI: @ Beginning of Thoracic Duct in Intestinal Region; is a Large collecting sac |
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TRANSPORT of LYMPH
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1) NO Pump= allows Return to heart in sim. fashion to Circul. Sys. VEINS
a. Milking by Skel. Mus. CONTR b. Pressure changes w/in the Thorax during breathing c. VALVES to prevent back flow d. Reg. contrac's of Smooth Mus w/in the Vessel WALLS |
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LYMPH CELLS -- make up Lymphatic Tissue
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A. LYMPHOCYTES
1) main warriors of immune sys (Grow in B.MARROW, Matured by THYMUS) in Thymus & Skin *a. T-CELLS:manage the immune response & DIRECTLY attack/destroy any foreign cells, Antigens *b. B-CELLS:produce PLASMA CELLS (which produce: ANTIBODIES that help destroy Antigens!)..(anything perceived as foreign: Bacter, toxins, viruses, RBCs, cancer cells) B. MACROPHAGES: Phagocytize foreign items & help activate---> T-CELLS C. RETICULAR CELLS: produce Reticular FIBERS ---> STROMA (of Lymph Tissue) |
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IV. LYMPH TISSUE
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A.main componen of Immune Sys
B. RETICULAR CNT makes up parts of Lymph Organs (EXCEPT for Thymus) |
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C. TYPES OF LYMPHATIC TISSUE:
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1. DIFFUSE: scattered Reticular elements, found all over body
2. LYMPHATIC FOLLICLES (NODULES): NO Capsule, Round Bodies of tightly-packed Reticular Elements & Cells *a.Central clusters of B-CELLS= GERMINAL CENTER *b.Found in: Ig Lymph organs & in other tissues of S.I. = PYER'S PATCHES! |
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4 Types of LYMPH ORGANS:
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1) Lymph Nodes,
2) Spleen, 3) Thymus, 4) Tonsils |
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LYMPH NODES
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= along Lymph Vessels, Filters Lymph
1)Remove/destroy Antigens (Ag), help Activate Immune Sys. 2)STRUC. of Lymph Node= bean-shaped <1in. Long 3)LYMPH Enters the Lymph Node on the CONVEX-side thru AFFERENT LYMPHATIC VESSELS--->SINUSES--> Exits the Node on CONCAVE-side aka (HILUS) thru EFFERENT LYMPH VESSELS |
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Other Lymph Organs....
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Do NOT Filter Lymph
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SPLEEN
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=LARGEST Lymphoid Organ, loc.'d SUPERIOR to: Kidney & Adrenal Gland
*a. bean-shaped w/ Hilus on Concave-side *b. Splenic Arteries/Veins Enter/ Exit Spleen @ Hilus, EFFERENT Lymphatics Exit Spleen @ Hilus *c.FXNS: -filter blood=remove dead RBCs -stores Byproducts of RBC Brk. Down for later use -Produces (RBCs) in Fetus -Stores: PLATELETS |
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THYMUS
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Bilobed organ BELOW Sternum, on TOP of Heart
*a. Large (until puberty) then diminishes in size *b. involved in: T-CELL Maturation by SECRETION of THYMOSIN |
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TONSILS
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Loc'd in the PHARYNX=gather & Remove Pathogens entering Pharyns (in Air or Food)
A) PALATINE TONSILS= R&L sides of POST. Oral Cavity B)LINGUAL TONSIL=@ Base (of Tongue) C) PHARYNGEAL TONSILS aka "ADENOIDS"= Poster. Nasopharyns D) TUBAL TONSILS=@ Auditory Tube opening into Pharynx |
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C. TYPES OF LYMPHATIC TISSUE:
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1. DIFFUSE: scattered Reticular elements, found all over body
2. LYMPHATIC FOLLICLES (NODULES): NO Capsule, Round Bodies of tightly-packed Reticular Elements & Cells *a.Central clusters of B-CELLS= GERMINAL CENTER *b.Found in: Ig Lymph organs & in other tissues of S.I. = PYER'S PATCHES! |
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4 Types of LYMPH ORGANS:
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1) Lymph Nodes,
2) Spleen, 3) Thymus, 4) Tonsils |
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LYMPH NODES
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= along Lymph Vessels, Filters Lymph
1)Remove/destroy Antigens (Ag), help Activate Immune Sys. 2)STRUC. of Lymph Node= bean-shaped <1in. Long 3)LYMPH Enters the Lymph Node on the CONVEX-side thru AFFERENT LYMPHATIC VESSELS--->SINUSES--> Exits the Node on CONCAVE-side aka (HILUS) thru EFFERENT LYMPH VESSELS |
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Other Lymph Organs....
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Do NOT Filter Lymph
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SPLEEN
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=LARGEST Lymphoid Organ, loc.'d SUPERIOR to: Kidney & Adrenal Gland
*a. bean-shaped w/ Hilus on Concave-side *b. Splenic Arteries/Veins Enter/ Exit Spleen @ Hilus, EFFERENT Lymphatics Exit Spleen @ Hilus *c.FXNS: -filter blood=remove dead RBCs -stores Byproducts of RBC Brk. Down for later use -Produces (RBCs) in Fetus -Stores: PLATELETS |
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THYMUS
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Bilobed organ BELOW Sternum, on TOP of Heart
*a. Large (until puberty) then diminishes in size *b. involved in: T-CELL Maturation by SECRETION of THYMOSIN |
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TONSILS
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Loc'd in the PHARYNX=gather & Remove Pathogens entering Pharyns (in Air or Food)
A) PALATINE TONSILS= R&L sides of POST. Oral Cavity B)LINGUAL TONSIL=@ Base (of Tongue) C) PHARYNGEAL TONSILS aka "ADENOIDS"= Poster. Nasopharyns D) TUBAL TONSILS=@ Auditory Tube opening into Pharynx |
