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Lymphatic system and heart
Lecture 11
12
Anatomy
Undergraduate 4
05/22/2011

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Cards

Term
What are the 3 lymphatic tissues present in the body
Definition
BALT- Bronchus (BiG Man)
GALT- Intestine
MALT- Mucosa
Term
Where in the body are lymphatic nodules?
Definition
Lymph nodes, Tonsils, appendix, peyer's patches
Term
What is the function of the tonsils?
Definition
Guard against ingested or inhaled pathogens before they enter the pharynx
Term
What is the function of the spleen?
Definition
i) Immunosurveillance
ii) RBC homeostasis
iii) Stabilizing blood volume
Term
The spleen is comprised of 2 different aggregations of cells. What are the names of these aggregations, where are they found in the spleen, and what types of cells they are comprised of?
Definition
The two different groups of cells are white and red pulps. White pulp is found along the small branches of the splenic artery and in sections of arterioles. Mass amounts of lymphocytes pass through these Red pulp ARE permeable sinuses which mechanically seperate RBC's by only allowing passage of flexible (healthy) RBC's.
Term
[image]
Definition
Top to bottom erased structures:

1) Trabecula
2) Subcapsular sinus
3) Lymphatic nodule
4) Germinal Center
5) Medullary cord
Term
What about lymph nodes makes them excellent locations for immuno-surveillance?
Definition
Lymph nodes have many afferent lymphatic vesses, but very few efferent vessels (1-3).
Term
Where do T lymphocytes exit the blood and into the parenchyma (organ tissue) of lymph nodes?
Definition
In the deep cortex.
Term
What are HEV's and what is their function?
Definition
HEV's are High Endothelial Venules. These venules express integrins which provide a surface for naive lymphocytes to attach to. This surface enables lymphocytes circulating in the blood to enter the lymph node.
Term
What are the two main lymph node superficial regions routinely palpated by physicians?
Definition
Thoracic and abdominal (Plenty more but these were boxed)
Term
What is the name of the sack that contains the heart and the roots of the great vessels?
Definition
Pericardium
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