Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
22 Cards in this Set
- Front
- Back
|
What is another name for Vitamin B3?
|
Niacin
|
|
|
In the body, what are 3 functions of Niacin?
|
Crutial to ATP production
Co-enzyme in energy metabolism RBC formation |
|
|
What are some sources of Vit B3?
|
Lean meat, poultry, fish
Peanuts & peanutbutter Fortified breads & cereals **Indirectly from the conversion of tryptophan by intestional microbs.** |
|
|
Excess niacin results in…(3 items)
|
Facial Flushing
Decrease in blood lipids (it’s a good thing) Can damage the liver |
|
|
What is the name for a deficiency in Niacin/B3?
|
Pellagra
|
|
|
Pellagra is also known as goose flesh.
What are the 3 classic symptoms for Pellagra? |
1) Dementia 2) Diarrhea 3) Dermatitis
(4-- Eventual Death) |
|
|
What are some mucus membrane symptoms of Pellagra?
|
Scarlet glossitis
Ulcerations may appear underneath the tongue, mucosa of lower lip & buccal mucosa Gingival inflamation may resemble ulcerative gingivitis **Remember Pellagra can be associate with a heavy Maze diet-->usually outside of the US.** |
|
|
What is another name for Vitamin B6?
|
Pyridoxine
*Need to know this term* |
|
|
What are the 3 primary functions of Pyridoxine (Vit B6)?
|
1)Co-enzyme
2) Converts tryptophan to Niacin 3) Hemoglobin synthesis for RBC's |
|
|
What foods provide Vit B6?
|
Meat, poultry, fish, & Eggs
Whole Grains Non Citrus Fruits Legumes Dark green leafy vegetables |
|
|
What does and Excess of Pyridoxine lead to? Deficiency?
|
Excess: Toxicity tymptoms from Megadoses like:
Ataxia (loss of coordination) Bone & muscle weakness Severe sensory neuropathy Deficiency: Glossitis & Angular Chelitis (cheilosis) **It is the most toxic of the B vitamins…think deficiency with red or burning tongue.** |
|
|
What is another name for Folate?
|
Folic Acid
|
|
|
Folate is a co-enzyme for approximately ___ other enzymes.
|
20 other enzymes
|
|
|
As far a reproduction goes what is so important about Folic Acid?
What about its importance with RBC's? |
Synthesis of DNA & RNA.
Involved in the maturation of RBC's **Also its important in the proper formation of neural tubes during fetal development.* |
|
|
What is a major source of Folic Acid?
|
Dark Green Leafy Vegetables-->Spinach!
|
|
|
What are the most common deficiences among the B Vitamins? (4 items)
|
Neural Tube Defects
Cleft lip/palate Megaloblastic anemia (blood disorder w/ apperance of very large RBC's) Glossitis (Firey red denuded papillae) *Alcoholics are at risk for Vit B deficiency too.** |
|
|
What is another name for Vit B12?
|
Cobalamin
|
|
|
What are the physiological roles of Cobalamin?
|
Converts folate into a form that is used to produce RBC's & nucleic acids for DNA snythesis
Formation & regeneration RBC's and for myelin synthesis **10-30% of elderly may be unable to absorb B12 naturally due to reduced stomach acidity/lack of intrinsic factor-->Get B12 shots.** |
|
|
What are typical sources for B12/Cobalamin?
|
Animal Protein
Organ Meat Milk/Cheese/Eggs Fish |
|
|
In addition to the elderly who else might be at risk for a B12 deficiency?
|
Vegans-->since no intake of animal foods.
|
|
|
A deficency in Vit B12 is also called Cobalamin deficency.
What are some conditions of this deficency? (3) |
Pernicious Anemia (immature RBC's)
Stomatitis or yellowish mucosa Hemoragic gingiva & bone loss. *Possible link to Alzheimer's risk.* |
|
|
What is Biotin & Pantothenic acid good for?
|
They are coenzymes for the metabolism of :
Carbs, Fats & Proteins |
