Explain how a stent works to treat Cardiovascular Disease? (3 marks)

A stent is a small cylinder wire mesh that is inserted into the blood vessel and expanded. This opens the middle of the blood vessel, allowing greater blood flow, meaning more oxygen is delivered to the organ the vessel supplies.

RT

Related Biology GCSE answers

All answers ▸

Briefly describe the structure and function of the respiratory system


Explain why damaged villi may result in poor growth (4 marks)


Plants require nitrates for growth. To maximise crop yield, farmers utilise techniques such as crop rotation and ploughing of fields prior to planting their seedlings. Explain how the two techniques mentioned improve plant yield:


How do blood vessels control body temperature?