BIOM 3010 Lecture Notes - Lecture 4: Foregut, Umbilical Vein, Bulbourethral Gland

• School: University of Guelph
• Department: Biomedical Sciences
• Course: BIOM 3010
• Professor: Matthew Vickaryous

Document Summary

Function: transport (o2 in, co2 out, nutrients in, wastes out, circulate hormones, regulation (ph, temp, osmotic pressure, protection (from foreign material, disease, clotting) 7-8% of total body weight cells: 99% are red bc (erythrocytes), 1% white bc (leukocytes) Platelets: cell fragments (control bleeding and blood clotting) Plasma: liquid fraction, yellowish colour, extracellular matrix of blood cells and makes up 55% of bodys total blood volume: surrounds bc & carry around the body, helps maintain bp and body temp. Vessels arteries: carries blood away from heart thick, elastic and muscular: arterioles (10-100 um) (smaller) capillaries (smallest, not always just oxygenated blood. Veins: carries blood towards heart thin, less elastic and less muscular: valves, venules (10-100 um) capillaries (10-4 um, generally carry deoxygenated blood, not always though. Capillaries: gas exchange, nutrient exchange: very thin [only endothelium], diameter is the same as red blood cells. Pulmonary: carries deoxygenated blood to lungs and oxygenated blood back to the heart.