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Human Biology
GCSE

What does the cornea do?

bends light as it enters the eye

Answered by Lily W. Human Biology tutor
3588 Views

Describe what is meant by "cardiac output"

Cardiac output is the volume of blood pumped out of the heart every minute. It is made up of: stroke volume and heart rate.Stroke volume is the volume of blood pumped out with each heart beat.Heart rate i...

Answered by Stephen Y. Human Biology tutor
4037 Views

Describe the physiology of the cardiac cycle and how it is regulated.

The heart is a myogenic muscle, meaning the cells contract with no stimulus. However, this is not sufficient to keep a person alive so the cellular contractions are co-ordinated within the heart and the r...

Answered by Emily D. Human Biology tutor
3621 Views

What are the three types of muscle found in the muscle

Skeletal, smooth and cardiac muscle.

Answered by Gareth P. Human Biology tutor
3731 Views

Explain why the concentration of glucagon in the blood rises before eating a meal.

Insulin and Glucagon are the two major hormones in the control of blood glucose, and although they have similar effects, they act in different conditions. When you eat a meal, Insulin is responsible for m...

Answered by Connor A. Human Biology tutor
5659 Views

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