What Are The Four Main Functions Of The Digestive System?

What are the 4 main stages of the digestive system?

There are four steps in the digestion process: ingestion, the mechanical and chemical breakdown of food, nutrient absorption, and elimination of indigestible food..

What is the last stage of digestion?

The final stage of the digestive system is the colon (large intestine) which absorbs water and salts before the remains are passed out of the rectum as faeces. The colon can also help to absorb remaining carbohydrate and some fats.

At what age is the digestive system fully developed?

At birth, your baby’s digestive system is still developing and maturing. At this point, he is not ready to accept other types of food except breast milk. At about six months, your baby’s digestive system is mature enough to digest more complex and solid food substances, like starch, protein, and fat in a non-milk diet.

What are the four main functions of the digestive system quizlet?

Terms in this set (77) What are the four main functions of the digestive system? Ingestion, Digestion, absorption and elimination of waste.

What are the 6 major functions of the digestive system?

Chapter Review. The digestive system ingests and digests food, absorbs released nutrients, and excretes food components that are indigestible. The six activities involved in this process are ingestion, motility, mechanical digestion, chemical digestion, absorption, and defecation.

What diseases can affect the digestive system?

Talk with your doctor if you think you might have one of these 10 common digestive disorders.Gastroesophageal Reflux Disease (GERD) … Peptic Ulcer Disease (PUD) and Gastritis. … Stomach Flu. … Gluten Sensitivity and Celiac Disease. … Inflammatory Bowel Disease (IBD) … Irritable Bowel Syndrome (IBS) … Constipation. … Hemorrhoids.More items…•

What are the 3 major functions of the digestive system?

There are three main functions of the gastrointestinal tract, including transportation, digestion, and absorption of food.

What is the primary function of the digestive system quizlet?

What is the primary function of the digestive system? To break down and absorb nutrients, salts, and water, as well as to eliminate some wastes. What is digestion? Digestion is the process by which large complex molecules in food are broken down into smaller molecules that can be used by the body.

What are the 12 parts of the digestive system?

The main organs that make up the digestive system (in order of their function) are the mouth, esophagus, stomach, small intestine, large intestine, rectum and anus. Helping them along the way are the pancreas, gall bladder and liver. Here’s how these organs work together in your digestive system.

Which type of digestion occurs in man?

In chemical digestion, enzymes break down food into the small molecules the body can use. In the human digestive system, food enters the mouth and mechanical digestion of the food starts by the action of mastication (chewing), a form of mechanical digestion, and the wetting contact of saliva.

Which part of the digestive system absorbs water?

Small intestine. The walls of the small intestine absorb water and the digested nutrients into your bloodstream. As peristalsis continues, the waste products of the digestive process move into the large intestine.

What are the 2 types of digestion?

Digestion is a form of catabolism or breaking down of substances that involves two separate processes: mechanical digestion and chemical digestion.

What are the 6 steps of digestion?

The processes of digestion include six activities: ingestion, propulsion, mechanical or physical digestion, chemical digestion, absorption, and defecation.

How do we digest food step by step?

Your digestive system, from beginning … to endStep 1: Mouth. To more easily absorb different foods, your saliva helps break down what you’re eating and turn it into chemicals called enzymes.Step 2: Esophagus. … Step 3: Stomach. … Step 4: Small Intestine. … Step 5: Large Intestine, Colon, Rectum and Anus.

How is food broken down in the body?

As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules. The body then absorbs these smaller molecules through the walls of the small intestine into the bloodstream, which delivers them to the rest of the body.

What are the three functions of the digestive system quizlet?

The digestive system has three main functions. They are digestion, absorption, and elimination. The digestive system starts at the mouth when food gets bitten into smaller and smaller pieces and is mixed with saliva.

What triggers digestion?

The hormones that control digestion are gastrin, secretin, and cholecystokinin (CCK): Gastrin causes the stomach to produce an acid for dissolving and digesting some foods. It is also necessary for the normal growth of the lining of the stomach, small intestine, and colon.

What are the main functions of digestive system?

The function of the digestive system is digestion and absorption. Digestion is the breakdown of food into small molecules, which are then absorbed into the body. The digestive system is divided into two major parts: The digestive tract (alimentary canal) is a continuous tube with two openings: the mouth and the anus.

What organs are chemical digestion?

What path does chemical digestion follow?Stomach. In your stomach, unique chief cells secrete digestive enzymes. … Small intestine. The small intestine is a major site for chemical digestion and absorption of key food components, such as amino acids, peptides, and glucose for energy. … Large intestine.

What is the first step to digestion?

Mouth. The mouth is the beginning of the digestive tract. In fact, digestion starts here as soon as you take the first bite of a meal. Chewing breaks the food into pieces that are more easily digested, while saliva mixes with food to begin the process of breaking it down into a form your body can absorb and use.

How does the human digestive system work step by step?

As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules. The body then absorbs these smaller molecules through the walls of the small intestine into the bloodstream, which delivers them to the rest of the body.