CH 11 DIGESTIVE SYSTEM

Cardiac sphincter is present at the front end of the stomach to prevent back flow of food into the oesophagus.

It has a ring of muscles to keep the opening closed like a valve to prevent food passing from the stomach until it is thoroughly churned up.

The opening of the stomach into the intestine is called the pylorus.

Peristalsis is the wave of constrictions caused by the circular muscles of the gut pushing the food along.

Oesophagus is a tube that simply conducts food from the throat to the stomach.

The function of saliva is:- Moistens and lubricants the inner lining of the oral cavity and the surface of the tongue. Moistens and lubricants food which again helps in swallowing. Acts as a solvent, dissolving some food particles to stimulate the taste buds of the tongue. Helps food particles to stick together to form bolus …

What is the function of saliva? Read More »

Saliva is a very slightly acidic fluid containing water, salts, mucus, and an enzyme salivary amylase.

The gland which secreted saliva into the mouth.

Enamel is the material that covers the crown. It is the hardest substance in the body.

The last molar of each side in each jaw is called wisdom teeth.