1.4 The circulatory system in humans

Practice questions on The circulatory system in humans

• Describe how the structure of the heart allows it to pump blood to both the lungs and the … (4 marks, Describe)
• Explain why the heart is described as having two separate sides, and outline why this arra… (4 marks, Explain)
• Describe the functions of plasma in the human circulatory system. (4 marks, Describe)
• Explain why the human circulatory system is described as a double circulatory system. (4 marks, Explain)
• Explain how white blood cells protect the body against disease. (4 marks, Explain)
• Describe the role of red blood cells in transporting oxygen around the body. (4 marks, Describe)
• Explain why the left ventricle has a thicker muscular wall than the right ventricle. (4 marks, Explain)
• Explain the role of valves in the heart and why they are important for the efficient circu… (4 marks, Explain)
• The heart beats continuously throughout a person's life without tiring. Explain how the he… (4 marks, Explain)
• Describe the sequence of events that causes blood to be pumped out of the heart during one… (4 marks, Describe)