Lymphatic System Flashcards
Functions of lymphatic system
Removes excess fluid away from the interstitial fluid comp
Participates in the body’s immune response by producing lymphocytes
Transports fats from the digestive system to the bloodstream
A network of lymph vessels, tissues and organs distributed all over the body and connected to the circulatory system
Lymphatic System
These are the exta-nodal lymphatic tissues
MALT
Tonsil
Thymus
Spleen
The single cell wall of the capillaries is called the
Endothelium
It enables the interchange of water, oxygen, carbon dioxide, other nutrient and waste chemicals
Endothelium
In most capillary beds more filtration occurs where and less reabsorption
Arterial end
Smallest tube of the lymphatic network
Lymphatic capillaries
Excessive interstitial fluid results into
Edema
Lymph coming from the digestive system milky in appearance is called
Chyle
TRUE OR FALSE
Presence of valves permit the lymph to moe only in the direction of the bloodstream
True
TRUE OR FALSE
One-way lymph valves ensure flow is only toward the VENOUS SIDE of the circulation
True
Clinically edema is manifested by
Swelling
Lymphatic block by infestation of nematodes of the Filariae family
Elephantiasis
When lymphatic capillaries merge it form the
Collecting vessels or lymphatic vessels
There are 3 distinct layers that could be seen in a lymphatic vessel
Inner layer: elongated endothelial cells
Middle layer: smooth muscle and fine elastic fibers
External layer: connective tissues
TRUE OR FALSE
Lymphatic vessels differ from the veins
True
Difference of lymphatic vessels from the veins
Layers are thinner than those of the veins
Valves in LV are mire numerous and placed at much shorter intervals
They anastomose more than the veins
Large collecting vessels merge to form
Lymphatic trunks
The principal lymphatic trunks are
Lumbar trunks Intestinal trunk Broncho-mediastinal trunks Jugular trunks Subclavian trunks
Lumbar trunks drain
L&R, lower limbs, pelvis and abdomen except digestive sys
Intestinal trunk drains
Part of the digestive system below the diaphragm
Broncho-mediastinal trunks drain
Throrax
Jugular trunks drain
L&R part of the head and neck
Subclavian trunks drain
L&R, upper limbs