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Describe how the body maintains control of blood glucose

If the concentration of glucose in the blood is too high, this is detected by beta cells in the pancreatic islets, which release the hormone insulin . Insulin has several actions in the body: firstly, it inc...
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Answered by Michael B. • Biology tutor
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Explain the nerve cell events that are propagated by each nerve cell to lead to a cough being stimulated by the brain.

Once an irritating particle enters the trachea and stimulates a receptor a series of events take place. The resting membrane potential of a sensory neuron (usually maintained around -70mV ) brought about by ...
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Answered by Alicja R. • Biology tutor
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How might antihypertensive drugs lower the risk of developing atherosclerosis?

Recap: Atherosclerosis is a disease where damage to the endothelium causes LDL (bad) cholesterol deposits to accumulate in the damaged section of endothelial wall. As part of the body's immune response, macr...
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Answered by Daniel R. • Biology tutor
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Explain how the mass balance of a glacier can be an indicator of climate change.

The ELA (Equilibirum Line Altitude) of a glacier identifies the point at which the ablation and accumulation zones are balanced, meaning the mass balance of the glacier is at equilibrium. The altitude of thi...
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Answered by Hannah G. • Geography tutor
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Describe the control of the menstrual cycle by the hormones FSH, LH, Oestrogen and Progesterone, in the situation where the person does not become pregnant. You may use a diagram to show how their levels change throughout the cycle.

Day 1-5: FSH is released from the pituitary gland and stimulates the primary oocytes to complete meiosis 1 and mature. The primary oocyte is inside a primary follicle which matures into a Graafian follicle. ...
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Answered by Udita D. • Biology tutor
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