Question

Describe the digestive system of human with diagram.

Hint:

Remember the sequence of organs in the digestive system: Mouth → Esophagus → Stomach → Small Intestine → Large Intestine → Anus. Each organ plays a specific role in breaking down food and absorbing nutrients.

Answer 1

The human digestive system is a complex series of organs that work together to convert food into energy and nutrients that the body can use. It includes the following organs: 1. Mouth: The process of digestion begins in the mouth, where food is broken down by chewing (mechanical digestion) and enzymes in saliva begin to break down carbohydrates (chemical digestion).
2. Esophagus: The esophagus is a muscular tube that connects the mouth to the stomach. It uses peristalsis (a wave-like motion) to move food down into the stomach.
3. Stomach: The stomach is a hollow organ that holds food while it is being mixed with enzymes and acids to break it down into a usable form. The stomach also produces acid and enzymes that digest food.
4. Small Intestine: The small intestine is where most of the digestion and absorption of food takes place. It is lined with villi that absorb nutrients into the bloodstream.
5. Liver: The liver produces bile, which is stored in the gallbladder and helps to digest fat.
6. Pancreas: The pancreas produces digestive enzymes and bicarbonate to neutralize stomach acid entering the small intestine.
7. Large Intestine: The large intestine absorbs water and salts from the material that has not been digested as food. It forms and stores feces until they are excreted from the body.
8. Anus: The anus is the opening at the end of the digestive tract through which feces is excreted from the body.
Diagram of Human Digestive System:
\includegraphics[width=0.5\linewidth]{imagedig.png}