Increased capillarisation describes:

Increased capillarisation describes:

• A. Increased capillarisation
• B. The amount of blood per beat
• C. The pressure of circulating blood on the walls of blood vessels
• D. The need for extra oxygen after strenuous exercise

Answer: (A)

Capillarisation refers to the growth of more capillaries around muscle fibres, increasing capillary density. This adaptation, typical of endurance training, shortens the diffusion distance for oxygen and nutrients from the blood to the muscle and speeds the removal of carbon dioxide and lactic acid. As a result, muscles can receive more oxygen at a given effort, supporting aerobic metabolism and improving endurance performance and recovery. It's not about the amount of blood pumped per heartbeat, blood pressure, or post-exercise oxygen needs; it specifically describes the formation of more small blood vessels to enhance oxygen delivery and waste removal.

Capillarisation refers to the growth of more capillaries around muscle fibres, increasing capillary density. This adaptation, typical of endurance training, shortens the diffusion distance for oxygen and nutrients from the blood to the muscle and speeds the removal of carbon dioxide and lactic acid. As a result, muscles can receive more oxygen at a given effort, supporting aerobic metabolism and improving endurance performance and recovery. It's not about the amount of blood pumped per heartbeat, blood pressure, or post-exercise oxygen needs; it specifically describes the formation of more small blood vessels to enhance oxygen delivery and waste removal.