Minerals 2 Flashcards
(41 cards)
What are microminerals?
Minerals required in small amounts (less than 100 mg daily) for proper bodily function.
What are alternative names for microminerals?
Often called trace elements due to their minimal required quantities.
What vital functions do microminerals serve?
Essential components for enzymes, hormones, and cellular functions.
List examples of microminerals.
- Iron
- Zinc
- Copper
- Selenium
- Iodine
- Manganese
- Fluoride
What is the role of iron in the body?
Forms the core of hemoglobin, enabling oxygen transport throughout the body.
How does iron support the immune system?
Strengthens immune defenses against pathogens and infections.
What are the impacts of iron deficiency?
Can lead to anemia, fatigue, weakness, and impaired cognitive function.
What percentage of the body’s iron is found in hemoglobin?
65% of the body’s iron is in hemoglobin.
What regulates iron balance in the body?
Regulated by alteration in intestinal absorption.
What is the typical daily absorption rate of iron?
Only 1-3 mg is absorbed daily.
List factors affecting iron absorption.
- Amount of iron in food
- Chemical status of ingested iron
- Presence of ferritin, apoferritin, and gastroferrin
- Availability of acidic medium in the stomach
- Normal intestine and suitable alkaline medium
- Presence of other chemicals in food (oxalate, phytate, tannic acid)
What is the average menstrual blood loss in females?
About 35 ml of blood per cycle.
How much iron is required to restore losses during menstruation?
0.6 mg of iron per day is required.
What is the recommended dietary intake of copper for adults?
0.9 mg/day.
What role does zinc play in the immune system?
Activates T-cells and supports antibody production for fighting infections.
How does zinc contribute to wound healing?
Accelerates tissue repair and promotes proper cell division.
What is the total body content of zinc?
2 – 2.5 g.
What is selenium known for?
Defending cells against oxidative damage and inflammation.
What essential function does selenium serve in the thyroid?
Essential for producing thyroid hormones that regulate metabolism and growth.
What may selenium reduce the risk of?
Certain cancers through DNA repair and immune support.
Fill in the blank: The body contains about ______ of iron.
4-5 g
True or False: Iron absorption is not affected by the presence of other chemicals in food.
False
What is the daily hemoglobin turnover for an adult?
About 25 mg per day.
What happens to hemoglobin during growth?
The requirements for iron increase markedly.