GROSS ANATOMY EXERCISE 23.8 GROSS ANATOMY OF LYMPHATIC STRUCTURES INTEGRATE LEAR
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GROSS ANATOMY EXERCISE 23.8 GROSS ANATOMY OF LYMPHATIC STRUCTURES INTEGRATE LEARNING STRATEGY ldentification of thoacic duct within the thoracic cavity of a cadaver can be challenging because of its relatively small dameter and lack of color (remember lymph does not contain erythrocytes t travels between the esophagus and the arygos vein. Anatomists thus refer to it as the "duck between two gooses. The "duck is the thoracic duct, and the "gooses" are the "arygoose" lazygos vein and the "esophagoose lesophagus L. Major Lywaph Vessels of the Body Obtain a model of the thorax and abdomen. Remove the heart and lungs from the thorax, and the stomach and intestines from the abdomen Identify the structures listed in figure 23.11 on the model, using table 23.5 and the textbook as guides. Then label them in figure 23.11 Left subclavian vein 2 Mwcosa-Associated Lymhatic Tissme (MALT): Obtain a model demonstrating a midsagittal section of the head and neck, and a model of the abdomen. Identify the structures listed in figure 23.12 oe the model, using the testbook as a guide. Then label them in figure 23.12 3. Lmph Node: Obtain a classroom model of a lymph node. Identify the structures listed in figure 23.13 on the model, using the textbook as a guide. Then label them in figure 23.13 4 The Spleen: Obtain a classroom model of the abdominal cavity, or observe the abdominal cavity of a human cadaver Locate the spleen and identify the structures listed in figure 23.14 on the model or the cadaver. Then label them n figure 23.14 Thorax, anterior view Figure 23.11 Major Lymph Vessels of the Body. Use the terms listed to fill in the numbered labels in the figure cisterna chyli lymph nodes right lymphatic duct thoracic duct Optional Activiry: BP?10: Lymphatic System- Watch the "Lymphatic System Overview" animation for a summary of the primary lymphatic stractures Table 23.5 Major Lymphatic Vessels of the Body Location Word Origitn Cisterna Chyl A"swelling" located at approximately vertebral level Receives lymph from L1/L2 Lymph draining from the cisterna chyli flows multiple smaller ducts that into the thoracic duct cista, box+chylos, juice drain the lower limbs and abdominal cavity Right Lymphatic Duct A small duct that returns lymph to the cardiovascular Receives lymph from the right, the right side,. system at the junction of the right internal jugular vein right side of the head and the right subclavian vein lympha, clear water + ductus, a leading neck, and thorax Thoracie Duct Begins at the cisterna chyli, extends along the posterior thoracic wall between the azypous vein and the esophagus, and returns lymph to the cardiovascular system at the junction of the left internal jugular vein and the left subclavian vein Receives lymph from the entire body below the diaphragm, and the left side of the head, neck, and thorax thoracic, the thoracic cavity, ductus, a leadingExplanation / Answer
1. Right lymphatic duct-drains into left brachiocephalic vein
2. Thoracic duct
3. Lymoh nodes
4. Cisterna chyli-it is the starting point of thoracic duct
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