How is lymph pumped throughout the lymphatic system?
System depends on skeletal muscle contractions, valves in lymphatic vessels, breathing, and simple gravity to move fluid throughout the body
3 Lymphatic system functions:
- Returns tissue fluid to the bloodstream - lymph is returned via the thoracic duct and right lymphatic duct
- Transports absorbed fats
- Provides immunological defenses against disease
Most lymph is returned to the blood at the junction of:
Left internal jugular and subclavian veins
Lymph node consists of:
- Outer cortical region
2. Inner medullary region (medullary sinuses)
Deep cervical lymph nodes form a chain along the course of what vein?
Internal jugular vein
Which region of lymph nodes is considered the main drainage of the head and neck?
Submandibular lymph nodes
The submental lymph nodes receive lymph from where?
- Tip of tongue
- floor of mouth beneath tip of tongue
- mandibular incisor teeth and associated gingiva
- center part of lower lip
- chin skin
T or F, Submental lymph nodes receive lymphatic vessels from mandibular molars
False, Do Not