PET-3322 Lecture Notes - Lecture 15: Haemophilia, Vasoconstriction, Fibrin
Document Summary
Blood internal transport system: blood is the life-sustaining transport vehicle of the cardiovascular system. 17. 1 functions of blood: functions include, transport, regulation, protection. Transport: transport functions include, delivering oxygen and nutrients to body cells, transporting metabolic wastes to lungs and kidneys for elimination, transporting hormones from endocrine organs to target organs. Regulation: regulation functions include, maintaining body temperature by absorbing and distributing heat, maintaining normal ph using buffers; alkaline reserve of bicarbonate ions, maintaining adequate fluid volume in circulatory system. Protection: protection functions include, preventing blood loss, plasma proteins and platelets in blood initiate clot formation, preventing infection, agents of immunity are carried in blood, antibodies, complement proteins, white blood cells. Regulation and requirements erythropoiesis: too few rbcs lead to tissue hypoxia, too many rbcs increase blood viscosity, > 2 million rbcs are made per second, balance between rbc production and destruction depends on:
