ANSC3103 Lecture Notes - Lecture 13: Gaseous Diffusion, Mitral Valve, Blood Vessel
26 Jul 2018
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Outline the basic form and function of the cellular components of blood: Adult animals have blood volume of approx. The blood consists of: plasma which is dissolved solids and proteins (54%: cells and cell fragments which include red blood cells and white blood cells (45%, platelets (which is involved in healing) ( 1%) The proportion varies with species and are based on the size of the cells. Erythrocytes (these are the formal name for red blood cells) They transport oxygen and carbon dioxide carried by haemoglobin molecules. Note the haemoglobin gives the blood its red colour. They have no nuclei (in mammals) but with birds, reptiles and fish the rbc are nucleated and oval shaped. They are produced in the bone marrow (and in the spleen for fetus) They do have a finite lifespan of about ~120 days and they are destroyed in the spleen.
