Liver

Liver
Liver is the large raddish brown glandular organ which is central station of metabolism and consequently the body is central metabolism clearing house.
Location
Liver located in the abdomen just below the diaphragm.
Functions of Liver
Liver is the main homeostatis organ which perform several function.
1. Metabolism of CHO and LIPIDS
Liver is the center of metabolism. Is take part in metabolism of carbohydrate and lipid. It regulates the amount of glucose into the blood. Excess glucose is converted into glycogen, which is reserve food. It amount of glucose is decrease in the blood glycogen is broken into glucose. Glycogen is reduce than liver convert amino acid into glucose.
Liver also help in oxidation of lipid. It is converted blood lipid into simple fat which is stored in the body.
2. Deamination and Urea Formation
Excess of protein can not be store in body. Protein are change into amino acid. Amine group is removed from the amino acid this process is called deamination of form NH3. Amonia combine with CO2 and convert into urea by a cycle called ornithine cycle.
3. Production of Bile
Liver produce a secretion called Bile. It is yellowish green alkaline substance. Bile contain bile pigment biliverdin, bilirubin, salt such as sodium-glycocholate, Na-taurocholate, Cholesterol, Phospholipid and mucous.
Functions of Bile

• Bile neutralizes the acidic food
• It kills the germs
• It takes part in the emulsification of fat.

4. Detoxification
Liver convert toxic substance into non toxic substance this process are called detoxification.
For example a compound hydrogen peroxide H2O2 is a harmful compound. The liver secrete on enzyme catalase which convert H2O2 into H2 and O2 and became non poisonous substance.
5. Formation of Cholesterol
Liver also forms cholesterol which is necessary for the body. Its extra amount is always excreted along with water.
6. Thermoregulation
Liver helps in regulation of body temperature by continue supply of blood and metabolic process.
7. Storage of Vitamins
Liver stores vitamins such as A1B and D.
Urinary System in Human Being
Urinary system of man consist of
Kidney
Kidneys are pair of dark red bean shaped structures which are attached to the dorsal wall of the abdominal cavity.
Kidney are covered by a membrane are called peritoneum.
Ureter
Urine leaves the kidney through a pair of duct called Ureter.
Bladder
The ureters of both kidney drain into pear shaped thin walled structure are called bladder.
Urethra
Urine leaves the body during urination from the bladder through a tube called Urethra.
Sphincter
Sphincter muscles near the junction of the urethra and bladder control the urine in bladder.