Functions: 1 Mark each
1. The tongue is the part that mixes saliva with the food while chewing and helps in swallowing food. It has taste buds on its surface which help in detection of taste.
2. The gallbladder is the organ which stores bile. Bile is required for the breakdown of fats.
3. The small intestine is the longest part of the alimentary canal, most of the digestion and absorption of food takes place here.
4. Villi present in the small intestine increase the overall surface area for absorption.
5. Teeth help in chewing the food and breaking it down mechanically into small pieces.

Functions: 1 Mark each
1 - Salivary Glands 
The function of the salivary glands is to produce saliva that start digestion of food in the mouth and also to lubricate the food while swallowing.
2 - Liver
The liver is the gland that secretes bile. Bile provides an alkaline environment for many enzymes to get activated and plays an important role in the emulsification of fats. 
3 - Duodenum
The duodenum is the first part of the small intestine. It receives the pancreatic juice and the bile juice and also secretes intestinal juice and is the main site for chemical digestion.
4 - Stomach
The stomach secretes digestive fluids that break down the food. It also churns the food into a milky acidic paste called chyme.
5 - Pancreas
The pancreas secretes the pancreatic juice that helps to digest carbohydrates, proteins, and fats. The pancreatic juice converts carbohydrates into simple sugars and glucose, proteins into amino acids, and the lipids into fatty acids and glycerol.

Digestion in the mouth: 1 Mark each
1. Chewing food accomplishes the chemical, as well as the physical breakdown of food.
2. There are three sets of salivary glands in humans: parotid (just below the ear), submandibular (below the lower jaw), and sublingual (below the tongue).
3. These glands produce saliva, which passes down a short duct into the oral cavity. Saliva is a fluid which is rich in ions and contains amylase.
4. This digestion of starch starts with the action of saliva. It also wets and lubricates the food particles.
5. It helps in killing the bacteria that accidentally enter along with the food.