ANP 1105 Lecture 6: 4.1 Blood Notes.docx

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: Krantisand Copeland

Document Summary

Composition of blood: blood is a tissue, made of liquid plasma and formed elements , formed elements, regulation of blood levels, blood maintains. O2 from lungs & nutrients from g. i. Nitrogenous & metabolic wastes from cells lungs & kidneys for elimination. Hormones from endocrine glands target organs. Body t by absorbing & distributing heat. Hot: blood picks up heat from muscles which dissipates to the surface of the body, why exercising makes you hot. Components of blood: plasma, buffy coat = wbc and platelets (<1 % of blood, really small, big buffy coat = leukemia, rbc = 45 % Functions of blood: substance distribution, blood transports. Normal ph in tissues using buffer system (bicarbonate ions) Adequate fluid volume in circulatory system (osmotic pressure: body protection (wbc and blood loss, blood loss prevention. Initiating clot formation when a vessel is broken: positive feedback, infection prevention. Activating wbc to defend against foreign invaders.