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Lymphatic System
Lab
38
Anatomy
Undergraduate 1
03/09/2011

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Term
Lymphatic capillaries are ____-____ tubes in which adjacent endothelial cells overlap each other, forming flaplike minivalves.
Definition
blind-ended
Term
Lymphatic capillaries are blind-ended tubes in which adjacent _______ cells overlap each other, forming flaplike minivalves.
Definition
endothelial
Term
Lymphatic capillaries are blind-ended tubes in which adjacent endothelial cells overlap each other, forming _______ minivalves.
Definition
flaplike
Term
Differ from blood capillaries in 4 ways.
1. Start as ______ rather than tubes.
Definition
pockets
Term
Differ from blood capillaries in 4 ways.
2. Have ______ diameters
Definition
Larger
Term
Differ from blood capillaries in 4 ways.
3.Have ______ walls.
Definition
thinner
Term
Differ from blood capillaries in 4 ways.
4. ________ or irregular in section
Definition
Flat
Term
Lymph- A fluid similar to plasma but does not have _________.
Definition
Plasma proteins
Term
Besides not having plasma proteins, what else makes lymph different from plasma?
Definition
WBC
Term
Structure of a Lymph Node
Cortex contains follicles with germinal centers, heavy with dividing ______.
Definition
B cells
Term
Structure of a Lymph Node
Deep Cortex houses _____ in transit.
Definition
T cells
Term
Structure of a Lymph Node
_____ circulate continuously among the blood, lymph nodes, and lymphatic stream.
Definition
T cells
Term
Structure of a Lymph Node
_______ extend inward from the cortex and contain B cells, T cells, and plasma cells.
Definition
Medullary cords
Term
Structure of a Lymph Node
Lymph sinuses contain _______.
Definition
Macrophages
Term
Funtions of Lymph Nodes
1. _____ _____ - macrophages destroy microorganisms and debris.
Definition
Filter Lymph
Term
Funtions of Lymph Nodes
2. _______ _______- lymphocytes are activated and mount and attack against antigens.
Definition
Immune system
Term
What is the largest lympoid organ?
Definition
Spleen
Term
Spleen funtions
Site of lymphocyte proliferation and immune ______ and response
Definition
surveillance
Term
Spleen funtions
Cleanses the ______ of aged cells and platelets and debris.
Definition
blood
Term
Spleen funtions
Stores breakdown products of RBC for later reuse. An example is ______.
Definition
Iron
Term
Spleen funtions
Besides iron what else does the spleen store?
Definition
blood platelets
Term
Spleen functions
Site of fetal erythrocyte _______.
Definition
Production
Term
What contains lymphocytes, macrophages and huge numbers of erythrocytes?
Definition
Spleen
Term
Structure of the Spleen
What are two distinct areas?
Definition
White and Red pulp
Term
Structure of the Spleen
White pulp is found around ____ _____.
Definition
Central arteries
Term
Structure of the Spleen
Red pulp is found in.....
Definition
Venous sinuses and splenic cords
Term
Structure of the Spleen
White pulp is mostly _____ on reticular fibers and involved in immune functions.
Definition
lymphocytes
Term
Structure of the Spleen
Red pulp is Rich in ________ for disposal of worn-out RBC and bloodborne pathogens.
Definition
Macrophages
Term
The thymus functions strictly in _______ maturation.
Definition
T lymphocyte
Term
What does not directly fight antigens?
Definition
Thymus
Term
T cells provide __________.
Definition
Cell mediated immunity
Term
T cells defend against abnormal cells and pathogens ________.
Definition
Inside cells
Term
B Cells provide ____________.
Definition
antibody-mediated immunity
Term
B cells defend against antigens and pathogens in ______.
Definition
Body fluids
Term
Which of the following is not a function of the lymphatic system?
a.maintaining BP
b.absorbing dietary fats
c.activating the immune system
d.transporting excess interstitial fluid back to the heart
Definition
a.maintaining bp
Term
Lymphnodes filter _____ and spleen filters ____.
Definition
lymph;blood
Term
The vessels into which fats are absorbed are called....
Definition
lacteals
Term
The cortex of the lymph node contains spherical clusters called ______, which contain primarily ______.
Definition
lymphatic nodules;b lymphocytes
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