The lymph vessels are situated in the following regions:
1. Deeper layers of skin
2. Subcutaneous tissues
3. Diaphragm
4. Wall of abdominal cavity
5. Omentum
6. Linings of respiratory tract except alveoli
7. Linings of digestive tract
8. Linings of urinary tract
9. Lining of genital tract
10. Liver and Heart
For more information, http://www.healthknow.info/lymphatic_system.as p