O Level Biology MCQs - Subtopic
Circulatory system MCQ with Answers
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"Pulmonary veins carry" Multiple Choice Questions (MCQ) on circulatory system with choices red oxygenated blood, bluish red deoxygenated blood, deoxygenated blood from heart to the lungs, and oxygenated blood from lungs to heart for SAT practice test. Solve circulatory system quiz questions for merit scholarship test and certificate programs for online colleges for teaching.
MCQs on Circulatory system
1.
Pulmonary veins carry
2.
When an artery dilates the
3.
In mammals, Endothelium is
4.
When the heart relaxes,
5.
Veins do not require thick walls