0
Digestive System
Digestive System is the category for questions regarding the breakdown and absorption of food-stuffs in our alimentary canal. Questions about the stomach and intestines can be included in this category.
7,599 Questions
How is mechanical digestion different from chemical digestion?
Physical Processes:
Ingestion is the placing of food into the mouth. Mechanical digestion is the mastication of food and the churning of the stomach. Egestion is the removal of undigested materials from the digestive tract through defecation. Underlying all these processes are the muscle movements involved in swallowing and peristalsis.
Chemical Processes:
The digestion of starch to maltose by salivary amylase, the actions of all digestive enzymes, the emulsification of lipids by bile salts, the effects of the hydrochloric acid secreted by parietal cells of the stomach lining etc.
Physical digestion includes things that involve mechanical motion, like chewing.
Chemical digestion occurs when a chemical reaction causes the breakdown of food molecules. This occurs in several places, such as with the enzymes in your saliva and in your intestines.
Chemical digestion breaks down food into smaller particles to be used as nutrients for the rest of the body. Mechanical digestion breaks down food into small pieces that are churned in the stomach and the intestines to be used as nutrients for the rest of the body, but some food may end up as waste.
In me chemical digestion, foods are physically broken down into smaller pieces. In chemical digestion, chemicals produced by the body break foods into their smaller chemical building blocks.
Chemical vs Mechanical Digestion
The digestive system of human body is made of vacuous organs connected with long and twisted tube from the mouth to the anus. This is also interlinked with various other organs that help the body to break the food particles and helps to absorb the nutrients. Organs like mouth, esophagus, stomach, small intestine, large intestine and anus play an important part in the process of digestion.
When we consume food, the body needs to break down the food into smaller molecules of nutrients for the system to absorb the nutrients into blood streams. This would be carried to all the cells present throughout the body. Digestion process could be divided into mechanical and chemical digestion.
Mechanical digestion is a process that begins the moment the food particles reach the mouth. The process of taking the food from mouth to the body is called ingestion. The teeth initiates the mechanical digestion by grinding the food and this process is also called as masticating.
When initiating the chemical digestion process, the saliva secreted helps in softening the food into semi-solid lump. Salivary amylase enzyme helps in digesting the carbohydrates and mucus. This way the food particles are made finer for swallowing and chemical breakdown in the digestive track. The food thus made into semi solid lump is then pushed through the throat and esophagus, a hollow tube that connects throat and stomach.
On reaching the stomach the food goes through a series of chemical and mechanical treatment. Inside the stomach mechanical digestion called peristaltic contractions helps to churn the food bolus. The chemical process mixes the bolus with digestive juices released by the stomach lining cells. The food particles go through hours of digestive process passing through various stages of chemical digestion.
The processed food is moved into rectum by small intestine. Then the food gets fermented inside large intestine by the gut bacteria. This aids in digesting the unfinished projects of small intestine.
There are four important hormones that help in regulating the digestion process.
- Gastrin '" gastric glands stimulates pepsinogen and hydrochloric acid on arrival of food inside stomach.
- Secretin '" this signals secretion of sodium bicarbonate in pancreas. Secretin helps in controlling the acidity of the chime.
- Cholecystokinin '" this helps in secretion of digestive enzymes in pancreas. This also aids in emptying the bile in gallbladder. Cholecystokinin is produced when the digestion process needs to handle fats from chime.
- Gastric inhibitory peptide '" this helps in decreasing the churning process. This also helps in producing insulin secretion.
Even though the mechanical and chemical digestion processes are very important for the human digestive process, chemical digestion is considered more important. This is due to the complex procedure involved in Chemical digestion.
Summary:
1. Mechanical digestion refers to the digestion process that breaks the food into smaller particles.
2. Chemical digestion is the process where acids, bases and enzymes released into the digestive track responds to semi-solid food lumps.
3. Chemical digestion is more important than mechanical digestion as this is how we get our energy.
Mechanical digestion is the actual chewing and breaking down of food, and chemical digestion is when one substance is turned into another
Mechanical digestion occurs in the mouth, when the teeth (and tongue) break down food into smaller pieces.
Chemical digestion also starts in the mouth, when digestive enzymes begin to break down the food and continues in the stomach where gastric juices continue the job of breaking the food down.
Mechanical digestion is when food is broken down in the mouth so you can think of your mouth being mechanical..... Chemical digestion is when you food is broken down by chemical enzymes so you can think I'd chemical as like erosion
Physical Processes:
Ingestion is the placing of food into the mouth. Mechanical digestion is the mastication of food and the churning of the stomach. Egestion is the removal of undigested materials from the digestive tract through defecation. Underlying all these processes are the muscle movements involved in swallowing and peristalsis.
Chemical Processes:
The digestion of starch to maltose by salivary amylase, the actions of all digestive enzymes, the emulsification of lipids by bile salts, the effects of the hydrochloric acid secreted by parietal cells of the stomach lining etc.
LInk:
What_is_the_difference_between_chemical_and_physical_digestion
mechanical digestion is when you chew up your food. I think
chemical digestion is when chemical break down food.
Mechanical => Chewing
Chemical => HCl in Stomach
What is the purpose for digestive system?
The digestive system includes the digestive tract and its accessory organs, which process food into molecules that can be absorbed and utilized by the cells of the body.
to help you get the nutrients you need
How is the excretory and digestive system connected?
the connection between these two systems are obvious. The energy system digests food and turns into nutrients so that your body can use it. Whatever is not needed in your body is being taken care of by the waste system.
When you digest food the food goes through chemical changes.?
Its a chemical change. A physical change is a change which does not change the type of matter. The reactions in your stomach break down the matter into other substances.
Where Maximum digestion of food takes place in?
Depends on what you mean by that.
Digestion begins with the pulverization of foods in the mouth. The Hydrochloric Acid within the stomach then further breaks apart the food.
However, if you had meant the actual absorption of nutrients, then the majority of the food in which you eat is absorbed through the intestinal walls.
What is an emulifier in fat digestion?
An emulifier is a substance that allows the easy blending of liquid substances that normally don't mix, or mix easily. Oils, for example, and fats don't mix well in the acidic, water-based, digestive juices produced in the stomach.
Bile, produced in the liver, stored in the gall bladder and released through the bile duct into the duodenum as fatty foods pass through, is an important emulsifier for fats and oils in the digestive system. It has properties very much like liquid dish detergent soap, and breaks down fats 'clumps' into much smaller molecules which are then broken down further, or absorbed through the intestinal villi.
Does indigestion affect your mood?
Yes, when you are stressed your and you feel tense your body goes into "fight or flight" mode releasing adrenilan and taking blood away from the stomach with causes the walls of your stomach to tighten and reduces its effectiveness in digestion and when your body realises its not digesting properly it releases more stomach acid which is actually un-needed and causes indigestion
What does your anus do in the digestive system?
it helps to eject out all the waste products i.e. undigested, unabsorbed substances called faeces.
What does milk look like after it's been in your stomach?
Have you ever seen cottage cheese? It's just curdled milk. Milk curdles in your stomach.
Why is it important that proteins are digested?
By digesting the protein, it is further broken down into its simpler forms which are easily used by the body for growth and repair.
so it does not get infected by any bacteria in the body
What is the ilium in the digestive track?
I am almost sure that it is what connects the smaller and larger intestinesor it could be the connection from the intestines to the colon. My sister is getting to have a portion of that removed due to Chron's Disease.
Why do i feel kicks in my stomach awhile i am sleeping?
Most likely it is gasses from your digestive system. Try not eating before bed to cease the kicks.
How do the cardiovascular system and respiratory system work together to remove waste products?
it start in the respiratory system then pass trouth the cardiovascular system throuth the nose and mouth then ......... it start in the respiratory system then pass trouth the cardiovascular system throuth the nose and mouth then ......... it start in the respiratory system then pass trouth the cardiovascular system throuth the nose and mouth then ......... it start in the respiratory system then pass trouth the cardiovascular system throuth the nose and mouth then ......... it start in the respiratory system then pass trouth the cardiovascular system throuth the nose and mouth then .........
What happens to food as passes through the mouth?
Digestion begins with the addition of saliva and mastication in the mouth. Chewing your food and adding saliva helps break down the food prior to swallowing and storage in the stomach.before it reach to the stomach it develop into a ball called bolus
What neutralizes acid chyme when it enters the duodenum?
the gland cells secrete mucus, which neutralises the acidity of the chyme produced by the stomach
What mechanical process move the bolus through the esophagus?
Peristalsis is the process of wave-like muscular contractions that moves food down the esophagus into the stomach.
Once it is in your throat,
peristaltic action
moves it up to your stomach
Which major organ is in the digestive and excretory?
If I remember my schooling they are the lungs, liver,kidneys and the skin. Each organ filters the blood to remove toxins.
Where in the human body would you find cells specialized to produce digestive enzymes?
Cells specialized to produce digestive enzymes are primarily found in the pancreas, specifically within clusters called acini. These acinar cells secrete digestive enzymes into the small intestine to aid in the breakdown of food. Additionally, specialized cells in the stomach lining, such as gastric chief cells, also produce digestive enzymes like pepsin.
What is peristalsis and segmental movements?
This the way the movement occurs in smooth muscle. Peristalsis occurs in the intestine. Segmental movements occur there also but in large waves.
What process breaks down food into smaller and useful materials?
Digestion is the process of changing food into a form that the body can absorb and use as energy or as the raw materials to repair and build new tissue. Digesting food is a two-part process that's half mechanical, half chemical.
- Mechanical digestion begins in your mouth as your teeth tear and grind food into small bits and pieces you can swallow without choking. The muscular walls of your esophagus, stomach, and intestines continue mechanical digestion, pushing the food along, churning and breaking it into smaller particles.
- Chemical digestion occurs at every point in the digestive system, beginning when you see or smell food. These sensory events set off nerve impulses from your eyes and nose that trigger the release of enzymes and other substances that will eventually break down food to release the nutrients inside. The body then burns these nutrients for energy or uses them to build new tissues and body parts.
[Koko-chi]
What is The role of buffer in restriction digestion reactions?
I believe that it is used to stabilize the pH levels so the enzyme activity isn't effected.
Which phase of digestion occurs when you think about see or taste food?
A chemial change because during digestion carbohydrates are converted into simple sugar units,proteins into amino acids and so on, water and enzymes present in the body catalysed these reactions.
What does your body do with the end products of protein digestion?
After your digestive system breaks down protein through digestion, the amino acids are used to build other proteins. For example muscle.
