The table shows the maximum blood pressure produced in the two ventricles of a human heart.
Table
| Ventricle | Maximum blood pressure in kPa\text{kPa}kPa |
|---|---|
| Left | 16 |
| Right | 3 |
Which statement explains the difference in pressure?
The right ventricle has more cardiac muscle because it pumps the blood further.
The left ventricle pumps blood to the lungs, which needs a higher pressure.
The right ventricle holds less blood, so it produces a much lower pressure.
The left ventricle has more cardiac muscle to pump blood around the body.
114 exam-style questions on OCR GCSE Biology 2.2 The challenges of size, covering 2.2.1 Exchange surfaces and surface area : volume ratio, 2.2.2 Substances transported in organisms, 2.2.3 The human circulatory system, 2.2.4 The heart and blood vessels, 2.2.5 Red blood cells and plasma, 2.2.6 Uptake of water and mineral ions by plants, 2.2.7 Transpiration and translocation, 2.2.8 Xylem and phloem, 2.2.9 Environmental factors and water uptake, and 2.2.10 Using a potometer. Each one has a worked solution and a mark scheme showing where the marks go.