Vitamin A Toxicity Quiz

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Which of the following is a symptom of vitamin A deficiency?

Night blindness

Increased susceptibility to respiratory infections

Excessive mucin production

Xerophthalmia (correct)

Dry skin and hair

What is the recommended dietary allowance (RDA) of vitamin A for adult women?

9,900 IU/day

5,000 IU/day

2,300 IU/day (correct)

3,000 IU/day

1,000 IU/day

How does retinoic acid influence gene expression?

By thinning the epithelial tissue

By inhibiting keratinization

By combining with nuclear receptors (correct)

By increasing mucin production

By promoting cell growth

Which vitamin A derivative is used for the treatment of severe cystic acne?

Isotretinoin (Accutane) Signup and view all the answers

What is the upper limit (UL) of vitamin A intake for adults?

10,000 IU/day Signup and view all the answers

Which of the following is a symptom of vitamin A toxicity?

Thickening of the mucin layer in the skin Signup and view all the answers

What is the primary cause of reported cases of vitamin A toxicity?

Inappropriate use of vitamin supplements (retinol) Signup and view all the answers

Which vitamin A derivative is contraindicated for use by pregnant women due to teratogenicity?

Isotretinoin (Accutane) Signup and view all the answers

What is the recommended dietary allowance (RDA) of vitamin A for adult men?

$3,000 IU/day$ Signup and view all the answers

How does retinoic acid influence gene expression?

By combining with nuclear receptors to influence the growth, differentiation, and function of target cells Signup and view all the answers

What is the primary cause of reported cases of vitamin A toxicity?

Ingestion of vitamin supplements (retinol) Signup and view all the answers

What is the mechanism of action (MOA) of retinoic acid in influencing gene expression?

Combining with nuclear receptors to influence gene expression Signup and view all the answers

Which symptom is NOT associated with vitamin A deficiency?

Increased susceptibility to respiratory infections Signup and view all the answers

Which vitamin A derivative is used for the treatment of acute promyelocytic leukemia (APL)?

All-trans-retinoic acid (ATRA) Signup and view all the answers

What is the upper limit (UL) of vitamin A intake for adults?

(9,900 IU/day) Signup and view all the answers

Which of the following is a potential consequence of excessive concentrations of retinoids where goblet cells are present?

Thickening of the mucin layer and extreme thinning of the epithelial tissue Signup and view all the answers

What is the primary concern associated with the use of Isotretinoin (Accutane) by pregnant women?

Teratogenicity Signup and view all the answers

Which condition results from vitamin A deficiency and leads to permanent blindness?

Xerophthalmia Signup and view all the answers

What is the recommended dietary allowance (RDA) of vitamin A for adult men?

$3,000 IU/day$ Signup and view all the answers

What is the upper limit (UL) of vitamin A intake for adults?

$9,900 IU/day$ Signup and view all the answers

Vitamin A Toxicity Quiz

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Questions and Answers

Which of the following is a symptom of vitamin A deficiency?

What is the recommended dietary allowance (RDA) of vitamin A for adult women?

How does retinoic acid influence gene expression?

Which vitamin A derivative is used for the treatment of severe cystic acne?

What is the upper limit (UL) of vitamin A intake for adults?

Which of the following is a symptom of vitamin A toxicity?

What is the primary cause of reported cases of vitamin A toxicity?

Which vitamin A derivative is contraindicated for use by pregnant women due to teratogenicity?

What is the recommended dietary allowance (RDA) of vitamin A for adult men?

How does retinoic acid influence gene expression?

What is the primary cause of reported cases of vitamin A toxicity?

What is the mechanism of action (MOA) of retinoic acid in influencing gene expression?

Which symptom is NOT associated with vitamin A deficiency?

Which vitamin A derivative is used for the treatment of acute promyelocytic leukemia (APL)?

What is the upper limit (UL) of vitamin A intake for adults?

Which of the following is a potential consequence of excessive concentrations of retinoids where goblet cells are present?

What is the primary concern associated with the use of Isotretinoin (Accutane) by pregnant women?

Which condition results from vitamin A deficiency and leads to permanent blindness?

What is the recommended dietary allowance (RDA) of vitamin A for adult men?

What is the upper limit (UL) of vitamin A intake for adults?

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