FRACTURED FEMUR
No description yet. This curated deck is ready for daily study.
Card preview (7)
Describe the 3 stages of haemostasis
vascular spasm - due to smooth muscle contraction in arteriole walls reducing blood through injured vessels to assist with platlet plug formation so coagulation can occur platelet plug formation • platelet adhesion and aggregation • chemical released bring more platelets to the are and promote vascular spasm coagulation • platelet plug is reinforced with fibrin threds to form a mesh • mesh traps blood cells and sels hole until repaired
Name the 2 hormones which act on the kidney to help restore blood volum e
Aldosterone INCREASES tubular reabsorption of NA+, water FOLLOWS by osmosis. INCREASING blood plasma volume Anti diuretic DECREASES water lost from the collecting duct so INCREASES blood plasma volume
Explain 2 mechanisms related to blood vessels that increase BP
• constriction of arterioles to INCREASES pvr which INCREASES bp • Constriction of veins to INCREASE venous return . increases venous return will INCREASE preload therefore increases BP
Define haematocrit and why it is lower than normal
the percentage of blood occupied by the red cells. her blood volume would have been restored by intravenous saline therefore diluting it. so her haematocrit would be lower
Name and describe the stage of bon healing occuring for june
formation of fracture haemotoma • blood leaks from damaged vessel and forms clot • nearby bone cells die due to lack of nutrients to tissues at site of fracture • phagocytosis and osteoclasts remove dead and damaged tissue
name the main mineral in maintaing bone tissue
calcium
name and describe the hormone that enables increased deposits of this mineral
calcitonin - stimulates deposits of clalcium in bone tissue by inhibiting osteoclast activity