Diet Assessment

8/3/2019 Diet Assessment

http://slidepdf.com/reader/full/diet-assessment 1/5

Explain the role of the following organs in the digestive system

The mouth and salivary glandsSalivary glands are in the mouth below the tongue and back of themouth. When food is in your mouth they release an enzyme calledamalayse, which starts the break up of foods.

The mouth is adapted to receive food by ingestion, break it intosmall particles by mastication, and mix it with saliva.

The Oesophagus

The oesophagus is a muscular tube of around 10 inches thatdelivers food from the mouth to the stomach.

The Stomach The stomach's main function is digestion. It does this by: Storing thefood we eat, Breaking down the food into a liquidly mixture calledchyme , Mixing enzymes which is are chemicals that break downfood, slowly empties that liquidly mixture into the small intestine.

The Pancreas

The pancreas is a vital organ that is part of the human digestive and

http://www.daviddarling.info/encyclopedia/S/saliva.html

http://www.daviddarling.info/encyclopedia/S/saliva.html



endocrine systems. The pancreas makes enzymes and hormonessuch as insulin and glucagon for the body.

The pancreas is an important component of the digestive system. It

manufactures and secretes digestive enzymes such as amylase,which digests starch. It also produces lipase, which breaks downfats, and trypsin, a protein processor. The pancreas creates andsecretes insulin, glucagon and other hormones. Insulin and glucagonare especially important for the maintenance of blood sugar, as

insulin lowers the blood sugar and glucagon increases the bloodsugar according to the body's needs.

The Liver

The function of the liver has many roles:

• produces bile for the break down of fats• converts glucose (sugars) to glycogen (stored sugar)• filters harmful substances from the blood such as alcohol• storage of vitamins and minerals (Vitamin A, D, E, & K)• Responsible for producing cholesterol. Produces about 80%

within the body.• matures red blood cells

The large Intestine The large intestine is the thick, lower end of the digestive system,containing the appendix, colon and rectum. Its principle function isto reabsorb water and maintains the fluid balance of the body.Certain vitamins are also taken in through the large intestinal wall.

The small IntestineThe small intestines are responsible for absorbing most of the nutrients found within yourfood. By the time ingested food reaches the small intestine, it has been mechanically

broken down into a liquid. As this liquid flows across the inner surface of the smallintestine (which has many small folds to increase the surface area), nutrients within the

food come into contact with the many small blood vessels which surround the smallintestine. This blood then leaves the small intestine, carrying away nutrients, water

electrolytes, vitamins, minerals, fats and medications to the entire body. It can take threeto six hours for a meal to pass from one end of the small intestine to the other, and that is

dependent on the makeup of the food passing through; meals containing a lot of fibermove more quickly.

The Colon



Responsible for the final stages of the digestive process, the colon'sfunction is threefold: to absorb the remaining water and electrolytesfrom indigestible food matter; to accept and stores food remainsthat were not digested in the small intestine; and to eliminate solid

waste (feces) from the body.

The rectum The role of the rectum is to hold the solid waste from the elimination

The Bladder The bladder is a sort of pouch found in the end of the genitourinarytract. Its function is to retain the urine of the body until it can bereleased to the urethra and out of the body.

The Gaul bladder

The gallbladder stores about 50ml of bile (1.7 US fluid ounces.),which is released when food containing fat enters the digestivetract, stimulating the secretion of cholecystokinin (CCK). The bile,produced in the liver, emulsifies (breaks down), fats and neutralizesacids in partly digested food.After being stored in the gallbladder, the bile becomes more

concentrated than when it left the liver, increasing its potency andintensifying its effect on fats. Most digestion occurs in the upperintestine, or, the duodenum, where it is release

Explain the role of the following food sources

Food Source Role Examples of Foodtype

Carbohydrates Carbohydrates are basicallysugar and starch. They breakdown into glucose moleculesin the body in digestion. Whenused as energy (glucose),carbohydrates become fuelfor your muscles and brain. If

your body does not have anyuse for the glucose, it is

Rice, potato,pasta, bread.



converted into glycogen andstored it in the liver andmuscles as an energy reserve.

Your body can store about ahalf a day's supply of

glycogen. If your body hasmore glucose than it can useas energy, or convert toglycogen for storage, theexcess is converted to fat.

Summary: Carbohydrates area source of energy for thehuman body

Fats Fats are a scores of energy Chips, cakes, fat foodse.g. burgers hot dogs

Proteins They are the basic buildingblocks of living things andare responsible for thegrowth and repair of bodycells and tissues. Thehuman body is about onehalf muscle in weight, andmuscles are mostly made

of proteins.

Meat , fish , eggs ,nuts , liver



Evaluate your own diet

Carbohydrates 50 %

Fat 20 %

Proteins 30 %

How healthy is your diet?

I Think that my diet is healthy. I have plenty of carbs andprotein. And a view fatty foods for energy to help me getthrough the day.

Does your sport demand any specific diet requirements, if sowhat physiological changes does this cause?

I do no sports. However I do a lot of walking which requiresplenty of carbohydrates and protein. And also fats forenergy. However not to much fats.

Documents

Diet Assessment