Flashcards in 2.2 Lymphatic Drainage of the Head and Neck Deck (17):
1
Name 3 areas of the head that do not have lymphatic drainage
Cornea
Lens
Inner ear
2
What does a lymphatic vessel carry?
Lymph fluid (excess tissue fluid) from the tissues back to the circulation
3
How much lymph fluid is produced per day?
3-4 Litres
4
Where does lymph rejoin the circulation?
Subclavian veins
5
How does fluid move along lymphatic vessels?
Using valves which constrict passively and intrinsically
6
What is lymphoedema?
Fluid retention and tissue swelling due to a problem with the lymphatic system
7
What can cause lymphoedema?
Removal of lymph nodes
Infections
Congenital
Damage to lymphatics- cancer treatment
8
What is a lymph node?
Connective tissue structure with a tough, fibrous, outer capsule. They contain high numbers of lymphocytes and macrophages
9
If a lymph node is tender, firm and mobile, what is the likely pathology?
Infection
10
If a lymph node is hard, matted and non-tender, what is the likely pathology?
Malignancy
11
Where are regional lymph nodes found?
Superficially
12
Where are terminal lymph nodes found?
Deep in the body
13
What separates the superficial and deep lymph nodes in the neck?
Investing layer of deep cervical fascia
14
Where do most lymph nodes in the neck lie?
Carotid sheath
15
Where does Virchow's node drain?
Thorax and abdomen
16
What can be implied if Virchow's node is inflamed?
Gastric cancer
17