Hypothyroidism is treated by giving the patient sufficient thyroxine (thyroid hormone), the most commonly prescribed in Canada being Synthroid and Eltroxin. The average daily dose is 0.125 milligrams (125 micrograms); it is rare to require more than 0.2 milligrams (mg).
The blood consists of a suspension of special cells in a liquid called plasma. In an adult man, the blood is about 1/12th of the body weight and this corresponds to 5-6 litres. Blood consists of 55 % plasma, and 45 % by cells called formed elements. The blood performs a lot of important functions. By means of the hemoglobin contained in the erythrocytes, it carries oxygen to the tissues and collects the carbon dioxide (CO2).
The remaining substances in plasma include nutrients, hormones, dissolved gases, and waste products that are being transported to and from body cells. These materials enter and leave the plasma as blood circulates through the body. Words to Know Capillary: Microscopic vessels in the tissues that are involved in the exchange of nutrients and other substances between the blood and the tissues.