Circulatory System Multiple Choice Questions (MCQ) PDF Download

MCQ 1: In vertebrates the blood flows in

1. close circulatory system
2. open circulatory system
3. both
4. anticlockwise

MCQ 2: The walls of capillaries are made up of cells named as

1. mesophyll
2. endothelium
3. epithelial
4. endoplasm

MCQ 3: Capillaries help to exchange substances between blood and

1. cells
2. tissue
3. muscles
4. bone marrow

MCQ 4: Arteries have thick elastic walls so that they can maintain the

1. blood pressure
2. heart attack
3. blood deficiency
4. leukocytes

MCQ 5: Aorta divides to form

1. arterioles
2. capillaries
3. vessels
4. veins