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Lymphatics and immunity (Lab manual)

STUDY
PLAY
Which of the following is NOT a function of the lymphatic system?
A) Maintaining blood pressure
B) Absorbing dietary fats
C) Activating the immune system
D) Transporting excess interstitial fluid back to the heart
A) Maintaining blood pressure (NOT an function)
Lymph nodes filter __________, and the spleen filters ____________.
Lymph; Blood
The vessels into which fats are absorbed are called ____________.
lacteals
The cortex of the lymph node contains spherical clusters called ____________, which contain primarily ____________
lymphatic nodules; B-lymphocytes
Small blind-ended vessels responsible for collecting interstital fluid and delivering it to lymph collecting vessels
Lymphatic capillary
Interstital fluid that has been collected into the lymphatic system
Lymph
Thin-walled structures that carry lymph from the small lymphatic capillaries to the larger lymph trunks
Lymph collecting vessel
Carries lymph from many lymph collecting vessels to one of two lymph ducts
lymph trunk
Two structures, the right lymphatic duct and the thoracic duct, that return lymph to the blood
lymph duct
Organ of the lymphatic system consisting of two tissue types: red pulp, responsible for destroying old red blood cells; and white pulp, which contains lymphocytes, macrophages, and dendritic cells
spleen
Organ of the lymphatic system where T-lymphocytes mature
Thymus
Aggregated, unencapsulated lymphoid tissue found at the base of the tounge, in the nasopharynx, and the oropharynx
Tonsil
Clusters of lymphatic tissue found throughout the body's mucus membranes
Mucosal-associated lymphatic tissue
Lymphoid organs found along the lymphatic vessels that filter lymph and remove pathogens, toxins and cells
Lymph node
The immune system generic response to cellular injury or invading foreign organisms; does not foster long immunity
Nonspecific response
Results from the release of checmicals near the damaged cells that attract immune cells to the area and cause vasodilation, increased capillary permeability, and pain
Inflammation
Neutrophils, basophils, and eosinophils; along with macrophages, are the bodies main phagocytic cells
Granulocytes
Mature monocytes; along with the granulocytes, they are the bodies phagocytic cells
Macrophages
Immmune system response to invading foreign organisms using a unique set of cells and molecules for each threat; fosters long term immunity to specific threats
Specific response
Chemical markers on cells that provoke an immune response
Antigen
Specific response mediated by B-lymphocytes
Humoral immunity
Leukocyte resonsible for humoral immunity; when presented with a know antigeb, it differentiates into plasma cells and memory cells
B-Leukocyte
Molecules secreted by plasma cells to bind to antigens on foreign cells and identify them for destruction by phagocytes
Antibody
Specific response mediated by cells (T-lymphocytes) rather than antibodies
Cell-mediated immunity
When presented with an antigen from abn invading cell, it releases cytokines to initiate a non specific response and activate CD8 T lymphocytes
CD4 (helper) T-lymphocyte
Locate and destroy infected and invading cells
CD8 (cytotoxic) T-lymphocyte