Collect information in the changes taking place in the food during the process of digestion.( from the school library or internet and display your observations on the bulletin board).
Answers
Answer:
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.
How sight and smell relate to digestion
At first glance — or sniff — the digestive link between your eyes, nose, and stomach sounds a tad weird. But think about it: How many times has the sight or scent of something yummy like a simmering stew or baking bread set your tummy rumbling?
The sight of an appetizing dish or the aroma (actually scent molecules bouncing against the nasal tissues) sends signals to your brain: “Good stuff on the way.” As a result, your brain — the quintessential message center — shoots out impulses that
Make your mouth water.
Make your stomach contract (hunger pangs).
Make intestinal glands start leaking digestive chemicals.
All that from a little look and sniff. Imagine what happens when you actually take a bite!
Tasting and chewing in the digestion process
You know that small bag of potato chips you have stashed way at the back of your desk drawer? Well, dig it out and take a chip.
As the chip hits your tongue, your mouth acts as though someone had thrown the “on” switch in a fun house.
Your teeth chew, breaking the chip into small manageable pieces.
Your salivary glands release a watery liquid (saliva) to compact the chip into a mushy bundle (a bolus in digestive-geek speak) that can slide easily down your throat on a stream of saliva.
Enzymes (which you can think of as digestive catalysts in this case) in the saliva begin to digest carbohydrates in the chip.
Your tongue lifts to push the whole ball of wax . . . no, bolus, back toward the pharynx, the opening from your mouth to your esophagus, and then through a muscular valve called the upper esophageal sphincter, which opens to allow the food through. In other words, you’re about to swallow.
Swallowing food: The slide from esophagus to stomach
your waist and behind your ribs.
Like the walls of your esophagus, the walls of your stomach are strong and muscular. They contract with enough force to break food into ever smaller pieces as glands in the stomach walls release stomach juices — a highly technical term for a highly acidic blend of enzymes, hydrochloric acid (HCl), and mucus. The stomach juices begin the digestion of proteins and fats into their respective bodily building blocks — amino acids and fatty acids.
Churned by the stomach walls and degraded
The digestion of the food takes place by breaking down the complex form of food into simpler form.
Explanation:
Digestion can be defined as the chemical and physical process by which the larger and complex materials are broken down into simpler and smaller components.
The carbohydrate are broken down into its simpler form (disaccharides to monosaccharides). It starts from the mouth.
Digestion also involves the breaking down of proteins and fats into soluble form. All the food that is ingested from the mouth is converted into a form which is absorbed by the body.
The digestion of the food takes place in the stomach and some of it also occurs in the small intestine.
Learn more about digestion:
https://brainly.in/question/12789035
https://brainly.in/question/13864257