Flashcards in Chapter 11 - The Nutritional Connection Deck (94)
true or false: one should assume that a healthy diet needs to be fat free, low sugar and high fibre all the time
FALSE: don't assume that a healthy diet needs to be fat free, low sugar and high fibre all the time
what 3 things should be considered when making food choices?
what are the 2 roles of the digestive system?
1) to produce energy from food ingested
2) to transfer energy rich nutrients, water and electrolytes into your body's internal environment
the __________ forms a continuous route from mouth to anus
the contents of the digestive tract are actually part of the external environment until absorbed through the _________
what is the order of the digestive tract? (list 8)
- small intestine
- large intestine (colon)
what are the 4 glandular organs in the digestive system?
- salivary glands
- gall bladder
what does the digestive system aim to do?
waste material excreted via the gastrointestinal tract is called ________
feces consists mainly of _______ and ______ (including fibre)
bacteria and undigested material
the science of food and how the body uses it in health and disease
list 6 essential nutrients
in the context of nutrition, what does essential refer to?
nutrients that the body is unable to manufacture without
what are 2 reasons essential nutrients are needed?
1) necessary for energy
2) needed for the building and maintenance of tissues
what are essential nutrients relied upon for?
the regulation of body functions
what are the 3 nutrients that provide the body with energy?
energy is expressed in ______
1 kilocalorie = ____ calories
what is the difference between calories and Calories
when there is a capital "C" it refers to kilocalorie
_________ = heat required to raise the temperature of 1kg of water 1 degree celcius
an average person requires approximately ______ kilocalories per day
what is the calorie density of fats?
what is the calorie density of alcohol?
what is the calorie density of carbohydrates?
what is the calorie density of proteins?
_______ are found in every living cell
proteins act as structural components for what 6 places?
5) some hormones
6) cell membranes
proteins are composed of chains of ________
there are ____ commonly recognized amino acids