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Nutrition Exam 1
Nutrition Exam 1
58
Health Care
Undergraduate 4
09/22/2012

Additional Health Care Flashcards

 


 

Cards

Term
Six Classes of Nutrients
Definition
  1. Carbohydrates
  2. Lipids
  3. Proteins
  4. Vitamins
  5. Minerals
  6. Water
Term
Vitamin's Role in the Body
Definition
Facilitate the release of energy from carbohydrates, fats and proteins
Term
Mineral's Role in the Body (2 things)
Definition
  1. In structures such as bones or teeth
  2. Found in fluids which influence fluid balance and distribution
Term
Water's Role in the Body
Definition
Provides the environment in which nearly all of the body's activities are conducted
Term
Inorganic Nutrients (2 nutrients)
Definition
  1. Minerals
  2. Water
Term
Organic Nutrients (4 nutrients)
Definition
  1. Carbohydrates
  2. Lipids
  3. Proteins
  4. Vitamins
Term
Energy Yielding Nutrients (3 nutrients)
Definition
  1. Carbohydrate
  2. Fat
  3. Protein
Term
Calculating Food Energy
Definition

Multiply the number of grams of carbohydrate, protein or fat by 4,4 or 9 and then add together

 

(Carbohydrate x 4) + (Protein x 4) + (Fat x 9) = Food Energy

Term
Key Recommendations for the Dietary Guidelines for Americans 2010 (5 chapters)
Definition
  1. Balanacing kCalories to Manage Weight
  2. Foods and Food Components to Reduce
  3. Foods and Nutrients to Increase
  4. Building Healthy Eating Patterns
  5. Helping American Make Healthy Choices
Term
Calculating Nutrient Density
Definition

Divide milligrams or grams of food by kcalories

 

(mg)/(kcal)

 

 

Term
What must be on the nutrition facts panel? (3 things)
Definition
  1. Serving Sizes
  2. Nutrient Quantities
  3. Daily Values
Term
What caloric diet is used to determine Daily Values?
Definition
2000 kcalorie diet
Term
What are Daily Values?
Definition
Show certain nutrition information as a percentage of your daily value needed to meet recommendations
Term
What must the Daily Values provide information on?
Definition

Total food energy

Food energy from fat

Total fat

Saturated fat

Trans fat

Cholesterol

Sodium

Total Carbohydrate

Dietary fiber

Sugars

Protein

Vitamin A

Vitamin C

Iron

Calcium

Term
History of USDA's Food Recommendations Leading to MyPlate (5 previous)
Definition
  1. Food for Young Children
  2. Food Wheel
  3. Food Guide
  4. Food Groups
  5. Food Pyramid
  6. MyPlate
Term
Dietary Guidelines: What year were they created, how often are they updated and what are they focused on now?
Definition
  1. 1990
  2. Every 5 years
  3. Children and obesity epidemic
Term
Recommended Sodium Level
Definition
2300 milligrams a day
Term
Cholesterol Recommendation
Definition
300 milligrams
Term
List segments of the digestive tract in order from the mouth to the colon (21 parts, from textbook)
Definition
  1. Mouth
  2. Pharynx
  3. Salivary Glands
  4. Epiglottis
  5. Trachea
  6. Esophagus
  7. Esophageal Sphincters
  8. Diaphram
  9. Stomach
  10. Pyloric Sphincter
  11. Liver
  12. Gall Bladder
  13. Bile Duct
  14. Appendix
  15. Small Intestine
  16. Ileocecal Valve
  17. Pancreas
  18. Pancreatic Duct
  19. Large intestine
  20. Rectum
  21. Anus
Term
What are the pharynx, epiglottis, trachea and esophagus?
Definition
  1. Pharynx: directs food from mouth to esophagus
  2. Epiglottis: protects airway during swallowing
  3. Trachea: allows air to pass to and from lungs
  4. Esophagus: passes food from the mouth to the stomach
Term
What do the diaphram, gallbladder, apendix, and pancreas have to do with digestion?
Definition
  1. Diaphram: Separates the abdomen from the thoracic cavity
  2. Gallbladder: Stores bile
  3. Appendix: Houses bacteria and lymph cells
  4. Pancreas: Manufactures enzymes to digest all energy yielding nutrients and releases bicarbonate to nutrilize acid chyme
Term
Explain the mechanical processes of digestion in order of occurrence
Definition

Chew food

Swallow

Epiglottis closes to protect airway

Upper sphincter opens

Peristalsis moves food along

Lower sphincter closes

Stomach grinds food into chyme

Pyloric sphincter opens and closes

Segmentation in small intestine

Ileocecal valve opens

Peristalsis moves food

Travels to colon and rectum

Rectum and anal canal hold

Rectal muscles relax

Excretion

 

Term
Salivary Glands Role in Digestion
Definition
Saliva moistens food and salivary amylase begins carhbohydrate breakdown
Term
Pancreas' Role in Digestion
Definition
Secretes enzymes through ducts in the duodenum that break down proteins, carbohydrates and fats and neautralizes stomach acid
Term
Liver and Gallbladder's Role in Digestion
Definition
Liver creates bile to be stored in the gallbladder for later secretion into the duodenum. Bile emulsifies fat
Term
Explain the Role of Enzymes in Digestion
Definition
Enzymes are proteins that facilitate the chemical break down of molecules - in digestion this is known as hydrolysis
Term
Simple Diffusion
Definition
Nutrients cross into intestinal cells freely, requires no energy
Term
Facilitated Diffusion
Definition
Nutrients need a specific carrier to tranport them from one side of the cell membrane to the other
Term
Active Transport
Definition
Nutrients must move against a concentration gradient (they require energy to be absorbed)
Term
Gastrin
Definition
Food entering the stomach stimulates cells to release gastrin and gastrin stimulates the stomach glands to secrete HCL
Term
Secretine
Definition
The presence of acidic chyme stimulates the cells of the duodenum to release secretin, which stimulates the pancreas to release neutralizing enzymes 
Term
Cholecystokinin (CCK) (2 roles)
Definition

Fat in the intestine stimulates the release of the hormone CCK, which travels to the gallbladder and tells it to release bile for emulsification

 

When fat triggers it's release it slows down GI tract mobility

Term
Bile
Definition
An emulsifier that prepares fat and oil for digestion; created by the liver and stored in the gallbladder
Term
Gallbladder
Definition
organ that stores bile, alerted by CCK when fat is present and bile needs to be excreted
Term
Chyme
Definition
semiliquid mass of partly digested food expelled by the stomach into the duodenum
Term
Bicarbonate
Definition
alkaline compound secreted from the pancreas that neutralizes stomach acid
Term
Bolus
Definition
swallowed food
Term
Mucus
Definition
slippery substance secreted by the cells of the GI lining that protects cells from exposure to digestive juices; lines stomach and GI tract
Term
5 Sphincters of the GI Tract
Definition

Upper esophageal sphincter

Lower esophageal sphincter

Pyloric sphincter

Ileocecal Valve

Inner Anal Sphincter/Outer Anal Sphincter

Term
Villi & Microvilli
Definition
Fingerlike projections in the small intestine and the even smaller projections on their surface
Term
Peristalsis
Definition
Waves of contracting muscles
Term
Three Sections of the Small Intestine
Definition

Duodenum

Jejunum

Ileum

Term
3 Important Monosaccharides
Definition
  1. Glucose
  2. Fructose
  3. Galactose
Term
3 Important Disaccharides and Their Components (glucose +)
Definition
  1. Maltose (glucose + glucose)
  2. Sucrose (glucose + fructose)
  3. Lactose (glucose + galactose)
Term
3 Important Polysaccharides
Definition
  1. Glycogen
  2. Starches
  3. Fibers
Term
Soluble Fibers
Definition
Help with heart disease and diabetes. Lower blood cholesterol by binding with bile in the GI tract so that the liver must use cholesterol to make more
Term
Insoluble Fibers
Definition
Promote bowel movement and help prevent colon cancer
Term
Explain how carbohydrates are digested in the GI Tract
Definition

Salivary amylase begins to break down polysaccharides and releases maltose

Digestion stops in the stomach as salivary amylase is neutralized by stomach acid

Pancreatic amylase breaks down food in the small intestine to glucose and maltose chains

Maltase breaks maltose into 2 glucose molecules, Sucrase breaks sucrose into 1 glucose and 1 fructose and Lactase breaks lactose into 1 glucose and 1 galactos

In the large intestine only fiber remains

Term
3 Carbohydrate Enzymes
Definition

Maltase

Sucrase

Lactase

Term
Lactose Intolerance
Definition

Normally the intestinal cells produce enough of the enzyme lactase to ensure that the disaccharide lactose is digested and absorbed efficiently

 

When more lactose is consumed than the available lactase can handle, lactose molecules remain in the intestine undigested

Term
The Role of Glucose in the Body
Definition
Glucose is used as energy for every cell in the body, especially red blood cells, the nervous system, and the brain.

Unused Glucose is stored as glycogen in the liver. When blood sugar falls, the liver hydrolizes glycogen chains and releases glucose into the blood stream.
Term
What hormones regulate glucose and what are their roles?
Definition

Insulin - puts glucose into cells

Glucagon - brings glucose out of storage when necessary

Term
Find the Percentage of Fat for a Given Nutrient
Definition
Fat kcal/ Total kcal = (#) X 100 = percent
Term
Endocytosis
Definition
A cell forms a vesicle to surround and engulf a nutrient and the nutrient is dissolved in water inside the vesicle to be absorbed intact.
Term
Heartburn/GERD
Definition
Lower esophageal sphincter malfunctions and allows stomach acid into the asophagus
Term
Ulcers (Defintion and 3 Causes)
Definition

A lesion of the skin or mucous membranes characterized by inflammation and damaged tissue

 

Caused by:

  1. Bacterial infection with H. pylori
  2. Use of certain inflammatory drugs
  3. Disorders that cause excessive gastric acid secretion
Term
Diarrhea
Definition
Frequent loose, watery stools that indicate that contents are moving too quickly through the intestines for absorption or water has been drawn from the intestinal tract and added to food 
Term
Oligosaccharides (definition & food sources)
Definition

Usually 3-10 monosaccharides linked together that's undigested portions serve as food for intestinal microflora

 

Food Sources: Legumes, beans, cabbage, brussel sprouts, & broccoli

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