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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.
What else can I help you with?
Is formation of chyme by the stomach an example of mechanical digestion?
Yes, the formation of chyme in the stomach is an example of mechanical digestion. This process involves the mixing and churning of food with gastric juices to break it down into a semi-fluid mass that can be easily digested further.
How are chemical and physical digestion alike?
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 DigestionThe 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 anotherMechanical 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 erosionPhysical 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_digestionmechanical digestion is when you chew up your food. I thinkchemical digestion is when chemical break down food.Mechanical => ChewingChemical => HCl in Stomach
Enzyme associated with the mouth?
The primary enzyme in human saliva is amylase and serves to break down complex starches like the carbohydrates that would be found in a cracker for example, into more simple sugars to begin the process of chemical digestion.
What is an example of secretion?
An example of secretion is the release of digestive enzymes by the pancreas into the small intestine to aid in the digestion of food.
What is an example of a parasympathetic response?
The parasympathetic response regulates organs and body systems. It is responsible for the "resting" activities of the human body, e.g. salivating, sexual arousal, digestion, excretion etc.
Is emulsification an example of mechanical digestion?
Mechanical digesting is this that involve physical breakdown or movement of food not chemical. Actions like chewing and swallowing would be mechanical.
Chewing is an example of?
a. absorptionb. chemical digestionc. eliminationd. mechanical digestionThe answer is: d. mechanical digestion
Is formation of chyme by the stomach an example of mechanical digestion?
Yes, the formation of chyme in the stomach is an example of mechanical digestion. This process involves the mixing and churning of food with gastric juices to break it down into a semi-fluid mass that can be easily digested further.
Type of digestion that involves using enzymes and other body acid to break food down into smaller molecules?
Mechanical digestion is the physical mashing and pulling apart of food like chewing your food. Chemical digestion uses acids and enzymes to chemically break down the food until it is small enough to be absorbed through the wall of the small intestine.
Is teeth grinding food a mechanical digestion or a chemical digestion?
Mechanical, of course.. If you experience your saliva deteriorating your food any time soon, let me know. Actually, saliva is there to help break down carbohydrates. The teeth in the mouth also digest food mechanically. In other words, the mouth uses both chemical and mechanical digestion to break down food.
Chewing food in the mouth is an example of?
Mechanical digestion.
Churning of the stomach is an example of what type of digestion?
mechanical
Which organ does mechanical and chemical digestion begin?
mechanical digestion is when you are breaking down food almost by hand. you're breaking it down manually. an example of mechanical digestion is chewing. it begins in your mouth and ends once you swallow.
What does mechanical digestion mean?
Mechanical digestion happens in only in 2 of your digestion organs mouth and stomach. Mechanical digestion is the mechanical way you digest your food for example when your eating your teeth are mechanical digesting your food by making your food smaller by chewing on it your not changing your food in any way that only happens chemical digestion is happening.Another example of mechanical digestion is in your stomach when the food is bong to the stomach your stomach is squeezing mushing up the food to make it smaller (your stomach is made out of 3 lairs of mussel's which squeeze in all 3 different direction's).
Is stomach mechanical or chemical digestion?
Both To further clarify: Mechanical: The stomach is a muscular sack. It contracts and relaxes, sloshing and squeezing the food inside to break it down and to ease the job of the 'chemicals'. Another example is how many birds swallow stones to enhance the crushing and churning in their stomachs. Chemical: The conditions and enzymes within the stomach contribute to chemical digestion. Hydrochloric acid, for example, creates an acidic environment that denatures proteins; whilst enzymes such as pepsin react at a molecular level with peptides to cleave them apart.
What is digesting food an example of?
Digesting food is a very good example of a chemical change. However, it is also a common example of a physical change with the body.
Is the stomach mechanical digestion or chemical digestion?
It is both: Mechanical: The stomach is a muscular sack. It contracts and relaxes, sloshing and squeezing the food inside to break it down and to ease the job of the 'chemicals'. Another example is how many birds swallow stones to enhance the crushing and churning in their stomachs. Chemical: The conditions and enzymes within the stomach contribute to chemical digestion. Hydrochloric acid, for example, creates an acidic environment that denatures proteins; whilst enzymes such as pepsin react at a molecular level with peptides to cleave them apart.
