everyday science MCQ #1123

One cell thick vessels are called:

everyday science MCQ #1123

  1. Question 1

    Q1. One cell thick vessels are called:

    • A) Veins
    • B) Pulmonary artery
    • C) Capillaries
    • D) Arteries

    Answer: Capillaries

    Explanation: Capillaries are the smallest blood vessels with walls only one cell thick, enabling efficient exchange of oxygen, nutrients, and waste between blood and surrounding tissues.