LYMPHATICS Flashcards
The lymphatic system consists of 3 parts
1
2
3
- Lymphatic vessels
- Lymph
- Lymph nodes
What does the lymphatic system do
Returns fluids that leak from the vascular system back to the blood
Lymphoid organs and tissues are the structural basis of ______ system
immune
Lymphoid organs and tissues include
S______, thymus, tonsils and lymphoid tissue
Spleen
_______ pressure is due to fluid pressing against a boundary
Hydrostatic
Hydrostatic pressure ‘_________’ fluid across the boundary
Pushes
______ pressure is due to non-diffusible solutes that cannot cross the boundary
Osmotic
_____ pressure “pulls” fluid across the boundary
Osmotic
In blood vessels it’s due to plasma proteins
Nutrients, waste, gases exec aged between blood and interstitial fluid, plasma proteins and fluids leak from the blood stream into the ________ space
interstitial
______] vessels return fluid (lymph) and plasma proteins to blood
Lymphatic
Why does the lymphatic system do this?
So that the cardiovascular system has enough blood to function
Lymphatic vessels is a one way system - lymph flows towards the ______
heart
_______ filaments provide structural (anchor) support so that interstitial fluid pressure doesn’t collapse lymphatic capillaries
Collagen
The walls of the lymphatic capillaries are not tightly joined - true or false?
True
L_____ are specialised lymphatic capillaries in the small intestine
Lacteals
Lymphatic capillaries drain to _______ _______ _______
lymphatic collecting vessels
Vessels into trunks. Trunks into _______
Ducts
Nutrients are supplied to vessels from branching v_____ v_____
Vasa vasorum
Collecting vessels in the skin travel with s________ v_______
superficial veins
Lymphatic _____ are formed by the union of the largest collecting vessels
trunks
Lymph is delivered into one of the two large ducts
1.
2.
Right lymphatic duct Thoracic duct (arises from the cisterns chyli)
The ________ lymphatic duct drains the collecting vessels and trunk so from the right arm and ther hit side of the head and thorax
Right
The _______ duct arises from the cisterna chyli and drains the rest of the body
Thoracic
Each duct empties lymph into _______ circulations at the junction of internal jugular and subclavian veins on its own side of the body
venous
Lymph nodes are located along lymph ______. Lymph flows through nodes to be _______
Vessels
cleansed
Lymph is propelled by what?
Pulsations if nearby arteries, smooth muscle contractions in the wall of lymph vessels and mini valves preventing back flow
Does physical activity increase lymph flow
Yes
What type if cells control and manage the immune response by secreting chemicals that signal other Immune cells into defense: eg. Multiplication of B cells
T cells
What type of cells secrete antibodies
B cells
Lymphoid tissue is mainly composed of _______ connective tissue
reticular
The two main types of lymphoid tissue are
Diffuse lymphatic tissue Lymphatic follicles (nodules)
You would find _________ lymphatic tissue in Larger collections in the laminar propria of mucous membranes
Diffuse lymphatic tissue
Lymph ______ are embedded in connective tissue
nodes
What do lymph nodes do
Filter lymph and are apart of the immune system
The ____ of the lymph node contains follicles with germinal centers, heavy dividing B cells
cortex
Lymph enters via _____ lymphatic vessels and travels through large sub capsular sinus and smaller sinuses
afferent
Lymph exits the node via _____ vessels
efferent
