Episode 4 - Lymphatic System Flashcards
What is Lymph?
Created in the interstitial spaces of tissues
Carried away by lymphatic vessels
Put back into circulation
From small to large, in what vessel order does lymph flow toward the blood
Lymphatic cappillaries
Lymphatic Venules & Veins
Lymphatic Ducts (Right Lymphatic & Thoracic)
Right and left subclavian veins
____ are ‘beads’ or ‘swellings’ along certain lymphatic vessels. They are ____.
Lymph Nodes
Filters
Lymph nodes are most extensive in the
7 locations
Breast, neck, axilla, abdomen, thorax, pelvis, groin
Edema can be caused by
4 things
Excess filtration (high Pc)
Decreased absorption (decreased Pi-c)
Increased capillary permeability
Blocked lymphatics
Where is the thymus located
mediastinum
What does the thymus produce
WBC’s, especially T-lymphocytes
What is characteristic of thymus size
It is largest in puberty and regresses in adults
____ are essentially clusters of WBCs hanging out in the pharynx.
Tonsils
What are the 3 types of tonsils?
Pharyngeal (adenoids)
Palatine
Lingual
Characteristics of the spleen
Located in LUQ
Often injured in abdominal trauma
Removal of spleen is called
splenectomy
____ is the diffusion system of small concentrations of lymphoid tissue in the GI tract
Mucosa Associated Lymphoid Tissue (MALT)
MALT is populated by ____, ____ and ____, each of which is well situated to encounter antigens passing through the mucosal epithelium.
T Lymphocytes, B Lymphocytes and Macrophages
