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Explain how change in blood flow to a runner's muscles helps him to run.

An increase in blood flow to the skeletal muscles means that more glucose and oxygen is delivered to the muscles via the blood. These are both needed in aerobic respiration to produce ATP/ energy for musc...

SW
Answered by Susannah W. Biology tutor
15681 Views

Describe three ways in which the body maintains its temperature in different climates

The temperature of the body is detected by the thermoregulatory centre in the hypothalamus in the brain, which can detect the temperature of the blood. Therefore it recieves information about changes to t...

VW
Answered by Victoria W. Biology tutor
3566 Views

Describe the way in which the normal heart beat is initiated and controlled

The heart muscle is myogenic, which means that it can contract without any input from the nervous system. The stimulus for the muscle to contract originates from a group of specialised ca...

SS
12127 Views

Describe the process of breathing out.

Firstly, the intercostal muscles contract. This causes the ribcage to move upwards and outwards. The diaphragm also contracts. This all has the combined effect of increasing the volume of the lungs. As a ...

JZ
Answered by Julia Z. Biology tutor
4660 Views

Explain how blood sugar level is controlled in the body?

The control of different substances in the body keeping them at a stable equilibrium level is called homeostasis. One area of this is blood sugar level control, if blood sugar level is too high or too low...

AS
Answered by Angus S. Biology tutor
8145 Views

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