Digestive System

Mechanical digestion starts when food is chewed physically by the teeth (grinding and tearing the food), and the remaining steps of digestion continue from then on.

Because the body needs to get rid of waste, (food that is not used.) If it didn't you would be poisoned.

Not usually but you could ask your surgeon.

Gallbladder is a sac for holding some bile that is produced by the liver for the body to brake down and digest fats. with or without a gallbladder, the liver is still producing bile; however, the bile is not as readily secreted in the body, and the liver can become overwhelmed when it faces with a large amount of fats (especially saturated and hydrogenated fats). This leads to the difficulty of digesting fats; small amount of fats can cause discomfort. Secondly, the dumping of bile is now not as easy to be regulated which can cause diarrhea after eating. Finally, after the gallbladder being removed, the bile produced by the liver becomes thick and sluggish, painful symptoms and bile stones in the liver (particularly in the common hepatic duct) can occur.

Enzymes contribute to chemical digestion. They are produced by the pancreas and together with bile, chemically change food into molecules so that it can be absorbed easily by the body.

The food materials is ingested into the cell via endocytosis which is digested by lysosomes which contains various hydrolytic enzymes. Waste materials so formed after digestion is excreted by cell by process called exocytosis.

RESPIRATORY SYSTEM is the process of respiration. The lungs is the main organ of the respiratory system because it receives oxygen and take out the carbon dioxide. DIGESTIVE SYSTEM is the process of digestion. The main organ is the stomach because this is where the digestion occurs.

I think it really all depends on what type of food you have in that mouthful.

The epiglottis in the Oral Cavity

I think you mean "does"
It starts the moment you put the food in your mouth. Your mouth is part of your digestive tract. Mouth, esophagus, stomach, small intestine, large intestine, rectum.

lipase enzyme

The teeth (in the mouth) - for chewing, and the muscles around the gut - for peristalsis.

Saliva is a liquid which comes into your mouth from the salivary glands in each cheek. Its main purpose is not to taste something, but it does alter the taste of foods, particularly starches which are turned into sugars. When we chew our food the saliva is mixed in with it, and this makes the food mixture soft enough to be swallowed. Saliva acts as a lubricant.

the steps of digestion:

1. the food enter through your mouth as the mechanical muscles(teeth and tongue) break down the food into smaller bits while the chemical(saliva or spit) breaks it down so it is easier to chew and swallow

2.next the food gets sent down to the esophagus where it uses muscles contractions to break down your food

3.it gets sent to your stomach where it takes about 10 for water to pass and about 3-4 hours for fatty foods to pass

4. next it gets sent down to the small intestine where the nutrients is taken out and pushed to the liver where it is kept and released

5.goes down to large intestine where your bowel movement is made and you will then release your feces once it hits ur rectum and exits from the body

Diarrhea is a disorder characterized by frequent, watery stools caused by irritation of the intestinal lining. This creates hyperactivity of muscle contractions (peristalsis), causing a rushing of the watery contents in the small intestine through the large intestine. This rushing does not allow the large intestine the time needed to reabsorb the water which equates to diarrhea.

the respiratory system and the digestive system share the Pharynx. The Respiratory system contains the eppiglottis, which keeps food going down the esophogus instead of the trachea

The muscular movement of the intestinal canal is called peristalsis.

Digestion of some fats can begin in the mouth where lingual lipase breaks down some short chain lipids into diglycerides. However fats are mainly digested in the small intestine. The presence of fat in the small intestine produces hormones that stimulate the release of pancreatic lipase from the pancreas and bile from the liver which helps in the emulsification of fats for absorption fatty acids.

The digestive system does not have as one of its functions the need for nutrients, apart form them needed to keep it healthy and functioning. It is more appropriate to ask, what nutrients do the cells of the body need? And how can the digestive system function optimally in order to accomplish that goal?

The purpose of the digestive system is to break down foods in order to supply nourishment to the cells of the body. So, ultimately, it is what we choose to ingest that will provide the nutrients that our body needs. The digestive system is just an avenue for good nutrition to be supplied to the body.

So, to answer your question more technically: All nutrients are involved in the digestive system because that is how the nutrients gain access to all the cells in the body.

Those things that you eat that are made of cellulose help clean your colons because cellulose is one of those things that the human body can't completely break down.

It distributes bile and pancreatic acids to help break down food

Because of all the fat and carbs an average of 4 to 6 hours depending on your age and exercise

More than 50% must be removed before there is a significant reduction in capability

Duodenum and jejunum can perform each other's roles in digestion and absorption

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.