Term
| What are the Lymphatic system's two main roles? |
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Definition
| Maintaining blood volume, and housing defensive cells |
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Term
| The Lymphatic system consists of what 2 semi-independent parts? |
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Definition
Lymph- the fluid
Network of Lymphatic Vessels
Lymph Nodes (and lymphoid tissues/organs) |
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Term
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Definition
| Interstitial fluid once its entered lymphatic vessels |
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Term
| Lymph flows toward where? |
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Definition
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Term
| How many liters of fluid a day does the lymphatic system move? |
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
| Flap like mini valve, fluid can't leak back out, has a "blind end" |
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Term
| Lymphatic capillaries are similar to |
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Definition
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Term
| Are Lymphatic capillaries permeable? |
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Definition
| Yes, they are highly permeable |
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Term
| What do lymphatic capillaries pick up? |
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Definition
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Term
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Definition
| Loosely joined endothelium, serves as one way "gates" or "flaps" |
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Term
| Lacteals serve what purpose? |
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Definition
They absorb Chyle
Have fenestrated blood capillaries
Pick up lipids and water, which has a milky appearance |
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Term
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Definition
| Interstitial fluid mixed with lipids |
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Term
| Lymphatic Trunks, Ducts drain into veins neaar |
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Definition
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Term
| Fluid returns to the circulatory system just before where nigga? |
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Definition
| The superior venae cavae NIGQQQKKAAAHHH |
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Term
| Does lymph transport have a pump? |
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Definition
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Term
Lymph Transport:
Low or high Pressure
Fast or slow flow? |
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Definition
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Term
What helps lymph move?
4 Mechanisms |
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Definition
Pulsations of nearby arteries
Contractions of smooth muscle in the walls of the vessels
one way valves
Repertory pump |
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Term
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Definition
| The main cells involved in the immune response |
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Term
| What do T and B cells do? |
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Definition
anything the body perceives as non self
4 example:
bacteria and their toxins
viruses
mismatched RBCS or cancer cells |
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Term
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Definition
| Attack and destroy foreign cells |
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Term
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Definition
Produce Plasma cells (which secrete antibodies)
Antibodies immobilize antigens |
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Term
| Lymphoid Cells: Macrophages |
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Definition
| Begin life in bone marrow as monocytes |
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Term
Lymphoid Cells:
Phagocytic |
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Definition
| engulf invaders (whole cells, toxins, ect) |
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Term
| Lymphoid cells: Reticular Cells: |
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Definition
| Produce the fibrous network that supports other cell types in lymphoid organs |
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Term
| Lymphoid cells: Dendritic Cells: |
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Definition
Antigen Capturing cells
This is a special type of phagocytes
Engulf and digest pathogens
Present Pathogen on surface, so immune cells know what to attack |
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Term
Lymphoid Tissue:
Scattered diffuse Lymphoid tissue is found.. |
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Definition
In every body organ -- in some its condensed into lymphoid follicles
Usually in connective tissue packed around organs |
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Term
| What are Lymphoid organs? |
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Definition
| Organized lymphoid tissue composed of reticular connective tissue |
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Term
| What are the main roles of lymphoid tissue? |
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Definition
Houses and provides site of proliferation for lymphocytes
Provides location where lymphocytes and macrophages can "scan" and "filter" the lymph
Provides location for immune surveillance |
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Term
| The principle lymphoid organs of the body are the |
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Definition
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Term
| Where are the lymph nodes located? |
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Definition
| clustered along lymphatic vessels |
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Term
| what channels flow into the nodes and what channels leave through the nodes |
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Definition
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Term
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Definition
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Term
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Definition
Filtration - Macrophages destroy microorganisms and debris
Immune system activation - monitor for antigens and mount an attack against them |
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Term
| Characteristics of the spleen |
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Definition
Highly vascularized
largest lymphoid organ
Sinusoid capillaries work with the spleen |
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Term
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Definition
Cleans blood - gets rid of old blood cells and platelets
storage and recycling of raw materials
Site of lymphocyte proliferation
Immune surveillance and response |
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Term
| What category of organs does the Thymus fall under? |
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Definition
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Term
| The thymus is most active at what point of life? |
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Definition
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Term
| When does the thymus atrophye? |
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Definition
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Term
| The thymus secretes hormones that cause |
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Definition
| T cells to become immune competent ( able to attack specific antigens |
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Term
| T cells are primed to identify targets when they pass through the.. |
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Definition
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Term
| The Thymus helps in the maturation of what cells? |
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Definition
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Term
Lymphoid Organs
Tonsils: what do they do? |
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Definition
| Gather and remove many pathogens entering via food or inhaled air |
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Term
Lymphoid Organs:
Peyer's patches |
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Definition
| Scan for antigens trying to enter the body across the intestinal mucosa |
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Term
| Infectious disorders of the Lymphatic system? |
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Definition
Tonsillitis
Lymphangitis
Bubonic plague
Lymphedema |
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Term
| Another disorder of the lymphatic that is not of the infectious nature.. |
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Definition
| Lymphatic Filariasis (elephantiasis) |
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