lymphatic system Flashcards
what is the lymphatic system made up of
a network of vessels and nodes
what does blood plasma carry
- proteins
- hormones
- gases
- ions
- antibodies
- blood cells (erythrocytes)
- products of digestion
how is tissue fluid formed?
when blood plasma is forced through the capillary walls. a colourless fluid
what is the function of tissue fluid?
bathes cells & provides them with…
- solutes e.g. glucose, amino acids, hormones ect…
- removes waste made by cells e.g. Co2
what is hydrostatic pressure?
blood pressure
is the hydrostatic pressure in the blood vessels high or low & why?
the blood pressure is HIGH due to the contraction of the ventricles.
what is the net movement of water and solutes in the arteriole end of the capillary bed?
water and solutes are forced OUT of the blood
what is the net movement of water and solutes in the venous end of the capillary bed?
water from tissue fluid moves back IN to the blood
is hydrostatic pressure higher or lower than osmotic pressure at the arteriole end of the capillary bed?
HIGHER
is hydrostatic pressure higher or lower than osmotic pressure at the arteriole end of the capillary bed?
Higher
what is lymph?
the remaining 1-10% is returned to the blood via the lymphatic system called lymph
what is the lymphatic system
a secondary circulatory system & major part of the immune system
what does the lymphatic system consist of?
- a network of lymphatic capillaries & vein like lymph vessels that transport lymph
- lymph nodes
- lymphatic tissue
lymphatic tissue
- fouund in the spleen
- contain large amounts of white blood cells & are involved in their development
lymph nodes
- along the larger lymph vessels sac-like structures.
- they trap pathogens and foreign substances
- contain a large number of white blood cells
