Subclavian vein

Figure 16.7

The lymphatic pathway.

right bronchomediastinal trunks. It empties into the right subclavian vein near the junction of the right jugular vein.

After leaving the two collecting ducts, lymph enters the venous system and becomes part of the plasma prior to the blood's return to the right atrium. Thus, lymph from the lower body regions, the left upper limb, and the left side of the head and neck enters the thoracic duct; lymph from the right side of the head and neck, the right upper limb, and the right thorax enters the right lymphatic duct (fig. 16.6). Figure 16.7 summarizes the lymphatic pathway.

The skin is richly supplied with lymphatic capillaries. Consequently, if the skin is broken, or if something is injected into it (such as venom from a stinging insect), foreign substances rapidly enter the lymphatic system.

What are the general functions of the lymphatic system?

Through which lymphatic structures would lymph pass in traveling from a lower limb back to the bloodstream?

Shier-Butler-Lewis: I IV. Transport I 16. Lymphatic System and I I © The McGraw-Hill

Human Anatomy and Immunity Companies, 2001

Physiology, Ninth Edition

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