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Zorluk: KolayHuman Physiology, Health, and Diseases

Vitamins are essential organic micronutrients required for key physiological functions in the human body. Which of the following statements regarding vitamins and deficiency disorders are correct?

  1. Vitamin A deficiency is associated with night blindness (nyctalopia) and xerophthalmia.Cevap
  2. Vitamin C deficiency causes scurvy, characterized by bleeding gums and delayed wound healing.Cevap
  3. C
    Rickets is an infectious viral disease transmitted by mosquito vectors.
  4. D
    Scurvy is caused by a protozoan parasite infecting human blood vessels.

Cevap

The statements highlighting that Vitamin A deficiency causes night blindness/xerophthalmia and Vitamin C deficiency leads to scurvy are correct. Rickets and scurvy are non-communicable nutritional deficiencies, not infectious diseases caused by viruses, protozoa, or vectors.
The statements asserting that Vitamin A deficiency leads to night blindness and Vitamin C deficiency causes scurvy are anatomically and physiologically accurate.

Adım Adım Çözüm

1
Analyze the physiological role of Vitamin A
Vitamin A is required for visual pigment formation in rod cells. Severe deficiency causes night blindness and xerophthalmia.
Establishes correct link between Vitamin A and its clinical deficiency manifestations.
2
Analyze the physiological role of Vitamin C
Vitamin C serves as a essential co-factor for collagen hydroxylases. Deficiency results in weak blood vessel walls, bleeding gums, and scurvy.
Establishes correct link between Vitamin C and collagen tissue integrity.
3
Evaluate statements regarding etiology of Rickets and Scurvy
Both conditions stem from nutritional deficiencies (Vitamin D/calcium and Vitamin C respectively). They are not infectious diseases transmitted by pathogens or vectors.
Differentiates non-communicable nutritional deficits from pathogen-driven infectious diseases.

Anahtar Kavram

Nutritional Deficiencies vs. Pathogenic Infectious Diseases
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Konular

Human Physiology, Health, and Diseases

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