Write 6 point about digestive system for standard 5
Answers
1. Digestion Breaks Down Food to Give the Body Energy

The digestive system includes structures that form the alimentary canal and the accessory organs of digestion. Digestion breaks down large compounds in food and liquids into smaller molecules that can be absorbed into the bloodstream. The absorbed nutrients include carbohydrates, protein, fats, minerals, and vitamins. They are processed, then delivered throughout the body and used for energy, growth, and cell repair.
2. Digestion Is a 6-Step Process

The six major activities of the digestive system are ingestion, propulsion, mechanical breakdown, chemical digestion, absorption, and elimination. First, food is ingested, chewed, and swallowed. Next, muscular contractions propel it through the alimentary canal and physically break it down into tiny particles. Digestive fluids chemically break down the nutrients from food into molecules small enough for absorption. Finally, indigestible substances are eliminated as waste.
3. Structures of the Alimentary Canal Ingest Food and Propel It on a Journey Through the Body

The alimentary canal is a single continuous tube that includes the oral cavity, pharynx, esophagus, stomach, and intestines. It is also called the digestive tract or the gastrointestinal (GI) tract and forms the physical pathway of digestion. Food enters the mouth and is pushed down the esophagus, into the stomach, and through the intestines. These structures gradually break down food into molecules that are small enough for absorption and expel the remainder as waste.
4. The Layers of the Stomach Wall Help It to Churn, Expand, and Contract

The stomach is divided into four regions: the cardia, fundus, body, and pylorus. It has three muscle layers. The longitudinal and circular layers are found throughout the alimentary canal and move food along using peristaltic contractions. The third, oblique, layer in the stomach churns food to break it down. When all three stomach layers are in motion, the two openings (sphincters) are closed to keep food in the stomach. The stomach wall also includes rugae, which are folds that allow the stomach to expand as food enters.
5. The Autonomic Nervous System Plays a Key Role in Digestion

The autonomic nervous system controls peristalsis, the contraction and relaxation of muscle layers within the alimentary canal wall. Peristalsis is a key function in digestion; it literally gets the ball rolling. These involuntary contractions push swallowed food down the esophagus, churn the stomach, and propel chyme through the small intestine and large intestine.
6. The Pharynx Is a Multitasker

The pharynx, or throat, plays a dual role. It is a common passageway for air entering the respiratory system and for food and fluids entering the digestive system. When food is chewed into a bolus and swallowed, it moves from the mouth to the oropharynx and then down to the laryngopharynx. The laryngopharynx is a crossroad where the upper respiratory and upper digestive tracts diverge. The rear of the laryngopharynx merges with the esophagus to continue the digestive tract.
Answer:
1) digestive system is very important to body
2) our stomach doesn't play any biggestimportant role in digestion.
3)the digestive process are ingestion, propulsion, absorption, machanical digestion,chemical digestion.
4) the main parts of digestive system is salivary glands,small insterstine,large insterstine
5)the important part for digestive system is small insterstine.
6)junch food is very hard to digest.