Lymphatic system Flashcards
Functions of the lymphatic system
Filters bacteria, foreign materials, toxins and harmful materials.
Drains away excess fluid to prevent water clogging of the tissue and cells.
Transports proteins back into the blood supply.
Produces lymphocytes which protect and defend the body against infection.
Produces antibodies to fight infection
Absorbs fat from the intestine and transport it to the liver.
Structure and Function of lymph fluid
Carries more waste products than nutrients.
Structure and Function of lymph capillaries
Fine hollow elastic tubes similar to blood capillaries in structure but wider. Walls more permeable than blood capillaries. Transport lymph fluid away from cells and tissues
Structure and Function of lymph vessels
Run closely alongside veins. Have collapsible walls cary lymph at a steady pressure similar to veins in structure contain valves called semi lunar valves. Transport the lymphatic fluid through one or more of the lymph nodes.
Structure and Function of lymph nodes
Tiny clusters of glands. filter out bacteria and toxins. white blood cells produce antibodies and ingest bacteria and foreign bodies.
Function of right lymphatic duct
Collects lymph from right side of head, neck, chest and right arm and drains it into the right subclavian vein.
Function of the thoracic duct
Collects lymph from left side of the head, neck.left arm, left side of chest are and both legs and drains its into the left subclavian vein.
Factors affecting lymph drainage
blood circulation
exercise
massage
Composition of lymph fluid
Plasma Proteins Waste products and toxins Fats Urea Gases Lymphocytes
Location and function of Buccal node
Face and cheek drains eyelids, nose and facial skin
Location and function of parotid nodes
Face front of ear, drains eyelids, nose and ears
Location and function of posterior auricular nodes
behind the ears, drains ear and temple
Location and function of occipital nodes
Back of the head, drains scalp and upper neck
Location and function of submental nodes
under the chin, drains lower lip, chin and floor of mouth
Location and function of submandibular nodes
under the jaw line drains chin, lips, noise, cheeks and tongue
Location and function of superficial cervical nodes
neck below the ear drains lower part of ear, parotid area and neck
Location and function of deep cervical nodes
Neck drains back of the scalp and neck
Location and function of axillary nodes
In the underarms, drains the pectoral area and upper arm
Location and function of supratrochlear lymph nodes
elbow, drains the fingers, thumb, hand and forearm
Location and function of Intestinal lymph nodes
abdominal cavity, drains the abdominal viscera
Location and function of Iliac nodes
hips, drains the pelvic area including reproductive organs and bladder
Location and function of Inguinal nodes
Groin, drains the pelvic area and legs
Location and function of popliteal nodes
behind the knees, drains toes, feet an lower legs
Location and function of Cisterna chyli
Sack like chamber in the abdomen, receives lymph from the lower abdomen, lower limbs, pelves and coveys it into the thoracic duct.
Which vessel does lymph enter a node and which vessel does it exit by?
Enters through afferent, exits through efferent
Function and location of spleen
Behind the stomach produces antibodies and lymphocytes destroy old red blood cells.
Where does the primary interaction between blood and lymph supply occur?
Capillary exchange.
How does lymph return to the blood supply?
Via the lymphatic ducts and into the subclavian veins
How is fat transported from the digestive tract to the blood
through lymph
How do lymphocytes circulate around the body?
In lymph and blood vessels
