Procedure Blymph Nodes

1. Review a textbook section on lymph nodes.

2. As a review activity, label figure 48.2.

3. Complete Part B of the laboratory report.

4. Observe the anatomical chart of the lymphatic system and the human torso, and locate the clusters of lymph nodes in the following regions:

cervical region axillary region inguinal region pelvic cavity abdominal cavity thoracic cavity

Figure 48.1 Label the diagram by placing the correct numbers in the spaces provided.

Jugular trunk

Brachiocephalic vein

Bronchomediastinal trunk

Intercostal trunk

Figure 48.1 Label the diagram by placing the correct numbers in the spaces provided.

Jugular trunk

Intercostal trunk

Thoracic Node Pics

Thoracic duct

Subclavian trunk

Intestinal trunk

Lumbar trunk

Thoracic duct

Subclavian trunk

Intestinal trunk

Lumbar trunk

Jugular vein Lymph nodes Lymphatic vessels Right lymphatic duct Subclavian vein Thoracic duct

5. Palpate the lymph nodes in your cervical region. They are located along the lower border of the mandible and between the ramus of the mandible and the sternocleidomastoid muscle. They feel like small, firm lumps.

6. Obtain a prepared microscope slide of a lymph node and observe it using low-power magnification. Identify the capsule that surrounds the node and is mainly composed of collagenous fibers, the lymph nodules that appear as dense masses near the surface of the node, and the lymph sinus that appears as narrow space between the nodules and the capsule.

7. Examine a nodule within the lymph node using high-power magnification. Note that the nodule contains densely packed lymphocytes.

8. Prepare a labeled sketch of a representative section of a lymph node in Part D of the laboratory report.

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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