lymphatic system Flashcards
what does the lymphatic system consist of
fluid (lymph)
lymphatic vessels transport lymph
red bone marrow
bunch of organs that contain lymphatic tissue (tonsils, spleen,thymus gland)
what does lymph act as
biological filters
where does the fluid enter and leave
enters through afferent lymphatic vessels, filters through sinuses, leaving through efferent lymphatic vessels
what are the specialised cells that line each sinus, engulf and destroy trapped particles
phagocytes
what does interstitial fluid supply and remove
supplies o2/ nutrients
removing urea/co2
what is the location of lymph
lymphatic vessels, flowing through lymphatic vessels until returned to cardiovascular system
where is interstitial fluid located
fills microscopic spaces between cells of tissue
where does lymph originate as
plasma, clear in colour
how does plasma become lymph
plasma filers out arterials, collects waste, drains into lymphatic vessels
what does lymph bath
all of your bodies cells
what is the daily amount of fluid that seeps from blood into tissue spaces
20L
how does lymph transport back into blood
via subclavian veins
where does the subclavian vein drain lymph
from the right lymphatic duct and the thoracic duct
where does the right lymph duct collect lymph from
head
neck
thorax
right arm
how long is the right lymphatic duct
approx 1.25cm long
where does the thoracic duct collect lymph from
head
neck
thorax
left arm
lower body
how long is the thoracic duct
38-45cm
how many lymph nodes are located along the lymphatic vessels
approx 600
where are lymph nodes mainly located
neck, armpit and groin
what are the lymphatic organs
spleen
thymus
tonsils
adenoids
what does the spleen do
filters out old worn red blood cells and destroys them
where is the thymus
small gland under sternum
what does the thymus help to produce
white blood cells
what is the function of tonsils and adenoids
help to protect entrance of digestive systems/ lungs from bacteria/viruses
where are the adenoids
back of nose where it meets back of throat
where are your tonsils
two glands in the back of your throat
functions of lymphatic system
protect against infection
transport lipids/proteins back to bloodstream
maintains correct fluid balance
what happens at the injured site because of lymph
causes swelling of injured cite
what does lymph do to damaged tissue
helps to heal it
helps to remove it
support for damaged tissue
what three lymphatic trunks drain into the right lymphatic duct
right jugular trunk
right subclavian trunk
right bronchomediastinal trunk
