OCR GCSE Combined Science A · J250

Heart and Blood Vessel Adaptations

What you need to know

Explain how the structural features of the mammalian heart and blood vessels are adapted to perform their specific circulatory functions.
Describe the anatomy of the heart, including cardiac muscle, names of valves, chambers, and the major associated blood vessels.
Compare the structural adaptations of different blood vessels, focusing on wall thickness, lumen diameter, and the presence of valves.