Explain the digestive system and how each part of the system works?

food is introduced in the mouth in a process called ingestion and chemically broken down in the process known as mastication.

The mouth contains saliva which has mucus that lubricates the mouth, it also has salivary amylase and water which acts a solvent.

The toungue roles the food into bolus and pushed down the pharynx in a process known as peristalsis.

Then the food enters the stomach through a muscle known as Cardiac sphincter. In the stomach there are muscular contractions which converts the food into chyme.

hope this one will help :)

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

hope this !