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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 else can I help you with?
What type of digestion is produced by breaking down and chewing food?
Mechanical digestion is produced by breaking down and chewing food. This process involves the physical breakdown of food into smaller pieces that can be further digested and absorbed by the body.
What body parts is not involved in mechanical digestion?
Chemical digestion takes place in the stomach, the intestines, (saliva or enzymes) these parts of your body also use mechanical digestion.
Are there 3 types of digestion utilized by the digestive system?
Not sure what you mean by '3 types of digestion', but there are three major food groups (carbohydrates, proteins, and fats), and each has a different method of digestion by the digestive system.
Could chemical digestion take place if mechanical digestion did not occur?
Mechanical digestion, i.e. your body breaking up the food into smaller pieces, is largely meant to speed chemical digestion up. We know that the rate at which the chemical reaction takes place is dependent on four things: the physical state of the reactants involved in the reaction, the temperature at which the reaction takes place, the concentration of the reactants, and the presence of a catalyst. Each influences the rate of reaction in different ways. Mechanical digestion breaks the food into smaller pieces, i.e. changes the physical state. With the larger pieces broken into smaller ones, more surface area is exposed. With greater surface area exposure, chemical digestion can take place much more rapidly. However, if for some reason you could get just huge chunks of food down your throat without chewing it, your stomach still churns (mechanical digestion) and the contractions in your intestines also help to break up food. So technically yes, chemical digestion would take place, but at a much slower and inefficient manner.
Contrast mechanical digestion with chemical digestion and give an example of each?
Physical digestion is, basically, "mashing." The food is ground up (by the teeth), mashed into a paste (by the stomach), and so forth. It's mixed with other foods in the process, but no new molecules are produced. Chemical digestion involves chemical reactions, and new molecules ARE produced. The action of enzymes in saliva, gastric juices, and so forth is a form of chemical digestion.
Is digestion a physical or chemical change?
Its a chemical change.
Is digestion of a candy bar a physical change or chemical change?
Chemical property
is digestion of food physical of chemical?
both physical and chemical
What is the type of digestion the salivary glands have chemical physical both or neither?
Chemical digestion
Is digestion a physical and chemical change?
a chemical change
How are physical weathering and chemical weathering alike?
how are physical weathering and chenical weathering alike and different
How are chemical and physical weathering different and alike?
how are physical weathering and chenical weathering alike and different
What is the difference between chemical and mechanical digestion?
Medical digestion is the physical process of breaking down food Chemical digestion is the process of breaking down food by chemical enzyme.
Are intestines a chemical or physical change?
Digestion that occurs in the intestines is a chemical change.
What type of foods don't require chemical and physical digestion?
Foods that are already broken down into their simplest forms, such as liquids, do not require chemical and physical digestion in the same way that solid foods do. These foods can be readily absorbed by the body without the need for extensive digestion processes.
How are physical changes alike?
all physical changes are alike in which all of them changing without changing in chemical makeup of the matter we have
Does physical or chemical digestion take place with the tongue?
chemical digestion due to the saliva breaking down food or other things in your mouth.
