Digestive System

SYSTEM OF HUMAN BODY

Digestive system

The human digestive system have following parts which are shown ahead.
TEETH : With the help of teeths the food is chewed.Teeths are of four types.1.Incisors(for cutting)2.Canines(for tearing)3.Premolars(for chewing)4.Molars(for chewing and grinding)
Hardest part in the body is tooth enamel.
Tongue : Tongue contains taste buds due to which we sense bitter,sour,salty and sweet taste.Man and other animals have holozoic nutrition,i.e.,solid form of food.in mouth ,salivery amylase acts on starch and converts it into maltose.Pepsin digests proteins and converts them into peptones.Renin converts milk to curd.trypsin acts upon proteins and breaks them into polypeptides.Lactose converts sucrose into glucose.Trypsin digests the peptides into amino acids.

Some digestive Glands

Liver : It is the largest gland of the human body and secretes bile juice,which is stored in gallbladder.It regulates the quantity of glucose in the blood,destroy died RBC,regulate body temperature and converts excess of amino acid into ammonia.
Pancreas : It is the second largest gland of the human body and contains islets of Langerhans.The most common istel cell,the ß-cells secretes insulin a hormone deficiency of which causes diabetes.