Tag: digestive system of human

Faces of a healthy person contain a small amount of metabolic waste products like bilirubin and biliverdin that provides colour to it, dead mucosal cells from the lining of the gut, little amount of cholesterol, fat etc.

Amino acids are directly absorbed into blood stream. Blood carries these amino acids to the tissues where they become part of the metabolic pool, from which body proteins are synthesized. Hence, it is known as the building block of proteins.

Bilirubin and its derivatives, Stercobilin that is secreted from the liver as the waste material that is formed after the degradation of haemoglobin and

• Haemorrhoids are also known as piles.
•  In Haemorrhoids, swellings contain enlarged blood vessels found inside or around the bottom (the rectum and anus). 
• A lump hanging down outside of the anus, which may need to be pushed back in after passing a stool. a mucus discharge after passing a stool.
• Hence, Constipation is a condition in which defecation occurs inky at prolonged intervals. It is irregular or inadequate defecation. Haemorrhoids is not responsible for constipation.
• So, the correct answer is 'Haemorrhoids'.

After digestion of complex food into the simple soluble form, the nutrients are absorbed by the small intestine with help of finger-like projection (villi) in the wall of the intestine. The wall of intention is surrounded by the blood vessels which possess assimilation of food. Assimilation is the process of transfer of soluble food from the intestine to different parts of the body through blood.

Vitamins are organic substances that help our bodies to function properly. Being a general source of energy supply these are crucial for the activities carried out by the cells and organs as well as the functioning of the body's immune systems. The human body goes through the process of bio-assimilation, which is actually the combination of two processes that help supply the cells with nutrients. The absorption of vitamins like minerals takes place in the gastrointestinal tract where it is broken down by enzymes and through the physical process of mastication. There is no chemical alteration of the substance. 

1. Assimilation means the absorption and digestion of food or nutrients by the body or any biological system. 
2. Assimilation of fats results in the formation of the end products of digestion of fats ie fatty acids and glycerols.
3. These are absorbed and taken into the lacteal and later the lymphatic system and then they are transferred to the liver. 
4. Fatty acid and glycerol can be used to form fats which are stored in the body’s fat deposits e.g. under the skin in the adipose tissue. Hence, the fatty acid and glycerol are transported from intestine mainly through the lymphatic system.

Food is first taken in from the mouth that is ingested. The food is converted to simple form i.e digestion and then it is absorbed by blood i.e absorption. The nutrients in the blood are taken to the cell for metabolic action i.e assimilation and then undigested food is thrown out of the body through anus that is egestion.