WEEK 8 Flashcards
plus lecture flashcards from week 9
Digestion
When the body breaks down food into simple substances that can be used as nutrients or excreted as waste
peristalsis
Involuntary muscle contractions that occur throughout the digestive system that move food along the pathway to be digested
What initiates the process of decomposing food?
saliva
how long does food remain in the stomach?
2 to 8 hours
liver functions
Removes toxins from the blood and produces bile, which breaks down carbohydrates, proteins, and fats
gallbladder functions
Stores bile and then releases it when the body needs it.
pancreas functions
Aides in the metabolism of sugar by producing insulin.
small intestine
Where food is broken down and the majority of the nutrients are absorbed
large intestine
Removes electrolytes and water from food while turning it into waste.
rectum
storage area for feces at the end of the large intestine
what does a healthy weight-loss plan consist of?
losing 1 to 2 pounds per week
what can a weight-loss of just 5% to 10% of total body weight improve?
blood pressure
blood glucose
cholesterol levels
what are the two nutrient categories
macronutrients and micronutrients
macronutrients
Building blocks of a diet, which include carbohydrates, fat, and protein.
micronutrients
vitamins and minerals; only small amounts of these nutrients are required in the diet.
optimal for growth, development, and body function
protein
the major building block of the body
provide amino acids that the body needs to build and repair muscle
carbohydrates
The digestive system turns carbohydrates into sugar to provide the body’s cells, organs, and tissues with the energy they need to function.
need the most of these in your diet
glycemic index
A carbohydrate-containing food’s ability to increase the body’s blood glucose level.
fats
Essential nutrient that help the body absorb vitamins while providing energy.
monounsaturated fats are good, trans fats are found in lots of processed foods
vitamins
Carbon-based organic micronutrients that promote health and support optimal functioning of the body.
fat-soluble vitamins
Vitamins that do not dissolve in water but instead are dissolved in fats.
water-soluble vitamins
Vitamins that are carried to the tissues of the body but are not stored in the body.
include vitamin C and B complex
minerals
Noncarbon, inorganic nutrients that promote health and support optimal functioning of the body.
include iron, zinc, and calcium
foods that have a high glycemic index
potatoes, white bread, and processed snack foods