Limfatiska sistema

1. LWBK244-4102G-C09_156-169.qxd 12/12/2008 11:14 AM Page 156 Aptara Inc. C H A P T E R 9 The Lymphatic System and Immunity The Lymphatic and Cardiovascular Systems Coloring Exercise 9-1 ➤ Functions of the Lymphatic System ✍COLORING INSTRUCTIONS Color each part and its name at the same time, us- ing the same color. On the main figure: 1. Color the parts of the circulatory system. Use variants of red for segments carrying oxy- genated blood ( variants of blue for seg- ments carrying deoxygenated blood( , ), and variants of purple for the capillary beds ( , 2. Use a dark color for the arrows representing lymph . 3. Follow the lymph as it flows through the lym- phatic system ( Use a dark color for the valves . On the smaller figure: Color all elements of this magni- fied view of a systemic capillary bed and the associated lymph vessels. • Fluid balance • Net fluid loss from capillaries into interstitial fluid • Lymph system returns excess fluid from tissues to the circulation • Protection • Lymph passes through lymph nodes, containing many immune cells • Lymphatic system protects against pathogens and often destroys traveling cancerous cells • Fat absorption • Dietary fat from the digestive system is absorbed into lymphatic capillaries , , ), D E M , Flow of Blood and Lymph 1. Deoxygenated blood flows from the right heart arteries/arterioles flows from the left heart systemic capillaries 2. Water and dissolved substances leave the capillaries into the interstitial fluid. 3. Interstitial fluid (now called lymph capillaries . 4. Lymph passes through one or more lymphatic vessels . Lymphatic vessels contain valves not away from it. 5. All lymph is returned to the systemic venous circulation pulmonary veins ). M A B L , through pulmonary . Oxygenated blood C A ). into pulmonary capillaries through systemic arteries/arterioles . F B C F into D E G ) enters blind-ended lymphatic G H to ). I J and lymph nodes I to ensure flow towards the heart, J K K (not the L 156