Wednesday, December 23, 2009

What is malnutrition?

Malnutrition refers to insufficient, excessive, or imbalanced consumption of nutrients by an organism. In developed countries, the diseases of malnutrition are most often associated with nutritional imbalances or excessive consumption.

Wednesday, December 16, 2009

Are there different types of digestion?

Physical Digestion is the process of breaking down food into smaller pieces.The physical breakdown of food into smaller pieces without any chemical change to the molecules of the food is called physical digestion. Smaller pieces of food have a larger surface area compared to a big piece of food.

Thursday, December 10, 2009

Is a strict diet important?

An adequate diet provides sufficient energy as well as adequate supplies of essential nutrients to support growth, repair, and maintenance of tissues. Malnutrition is poor nutrition that results either from a lack of essential nutrients or a failure to utilize them; malnutrition may result from undernutrition or overnutrition.

Friday, December 4, 2009

What actually makes up the digestive system?

The digestive system is made up of our mouth, oesophagus, stomach, liver, gall bladder, small intestines, pancreas and the large intestines.

Sunday, November 29, 2009

How is food digested?

Digestion involves mixing food with digestive juices, moving it through the digestive system, and breaking down large molecules of food into smaller molecules. Digestion begins in the mouth, when you chew and swallow, and is completed in the small intestine.

Sunday, November 22, 2009

Why is digestion important?

When you eat foods—such as bread, meat, and vegetables—they are not in a form that the body can use as nourishment. Food and drink must be changed into smaller molecules of nutrients before they can be absorbed into the blood and carried to cells throughout the body. Digestion is the process by which food and drink are broken down into their smallest parts so the body can use them to build and nourish cells and to provide energy.

Monday, November 16, 2009

What is digestion?

Digestion is the process of breaking down food so that it's small enough to be absorbed and used by the body for energy or in other bodily functions.

Tuesday, November 10, 2009

My Learning Targets

What is digestion?
Why is digestion important?
How is food digested?
What actually makes up the digestive system?
Is a strict diet important?
Are there different types of digestion?
What is malnutrition?