Lymphatic System (capillaries, vessels, and organs) Flashcards
What are the three main functions of the lymphatic system?
- Maintains fluid balance in tissues
- Absorbs lipids from small intestine/digestive tract
- Defends the body against microorganisms and other foreign substance
Lymphatic vessels carry _____ away from ______.
lymph; tissues
Lymphatic capillaries lack a _____ and have loosely _______ ______ cells.
basement membrane; overlapping epithelial
Lymphatic capillaries join to form __________.
lymphatic vessels
Lymphatic vessels have _______ that ensure a _______ flow of
_________.
valves; one-way; lymph
What causes the lymph to move?
- Contraction of lymphatic vessel smooth muscle
- Contraction of skeletal muscle
- Thoracic pressure changes
Lymph moves through vessels by the ________ of the skeletal muscles and pressure changes created by respiration
“milking action”
Lymphatic capillaries are ________ tubes in which adjacent _______ cells _____ each other, forming _________.
blind-ended; endothelial; overlap; flaplike minivalves
Lymph nodes are found along the ________.
lymphatic vessel
After passing through the lymph nodes, the lymphatic vessels
converge to form larger vessels called ___________.
lymphatic trunks
drains lymph from a major portion of the body
lymphatic trunk
The lymphatic trunks either connect to large veins in the thorax or join to yet larger vessels called
lymphatic duct
The two lymphatic ducts
right lymphatic duct & thoracic duct
The largest lymphatic vessel is the ________.
thoracic duct
drains lymph from the right side of the body inferior to the thorax and the entire left side of the body
thoracic duct
drains lymph from the upper right quadrant of the body
right lymphatic duct
the lymphatic trunks form a sac called the _______, a sac that joins the inferior end of the thoracic duct
cisterna chyli
Lymphatic trunks and ducts empty into the blood at ________.
thoracic veins
Lymphatic tissue is ________ tissue that contains lymphocytes and other cells.
reticular connective
Areas where lymphatic tissue are concentrated
lymphatic/lymphoid organs
What are the Lymphatic tissues that are surrounded by a capsule?
lymph nodes, spleen, thymus