MYTUTOR SUBJECT ANSWERS

120 views

How is blood glucose maintained in the body?

The control of blood glucose levels is an example of homeostasis. The human body requires glucose for normal respiration of cells, but the blood levels is in a narrow range.

Insulin and glucagon are hormones released from the pancreas into the blood stream. They are called endocrine hormones, because they are in the blood stream (endocrine).

How Insulin Controls Blood Glucose

Insulin is secreted from the islet cells in the pancreas - in beta cellsHIGH blood glucose stimulates the release of insulin. There is a low level of insulin secreted by the pancreas, but in high glucose levels, more insulin is released into the blood stream. LOW blood glucose results in less secretion of insulin.

In HIGH blood glucose, insulin in the blood stream causes glucose to enter cells resulting in a net reduction in blood glucose - into the normal range.

In LOW blood glucose, more glucagon is released.

The Effect of Glucagon On Blood Glucose

Glucagon is also released by the pancreas, but it acts on liver cells to release glucose contained in glycogen molecules - this is called glycogenolysis (the breakdown of glycogen into glucose).

Glucagon can also stimualte the liver to produce glucose out of other nutrients in the body, like proteins.

If glucose levels are too low then glucagon is released, which results in an increase in blood glucose back to the normal range.

Mirac D. GCSE Human Biology tutor, A Level Human Biology tutor, GCSE ...

3 months ago

Answered by Mirac, an A Level Biology tutor with MyTutor

Still stuck? Get one-to-one help from a personally interviewed subject specialist

129 SUBJECT SPECIALISTS

£20 /hr

Fabiha A.

Degree: Biomedical Science (Bachelors) - Kings, London University

Subjects offered: Biology, Science+ 2 more

Biology
Science
Maths
Chemistry

“About me I am currently studying Biomedical Science at King's College London because it combines my twomost loved subjects, Biology and Chemistry. My enthusiasm for all things science make me want to keep learning and also use my kno...”

£20 /hr

Ruth W.

Degree: Biochemistry (Masters) - Birmingham University

Subjects offered: Biology, Science+ 3 more

Biology
Science
Physics
Maths
Chemistry

“About Me: I am a biochemistry student at the University of Birmingham.  I have always had a real passion and love for all things science and maths and I hope that my tutorials will instil this love in you too. I’m very patient and fr...”

MyTutor guarantee

£20 /hr

Grace J.

Degree: Biological Sciences (Bachelors) - Exeter University

Subjects offered: Biology, Maths+ 2 more

Biology
Maths
Extended Project Qualification
Chemistry

“I'm a Biological Sciences student in my 3rd and final year at the University of Exeter. I have a passion and enthusaism for all things science and computer based and hope to encourage this love through my tutorials.  I am a very patie...”

About the author

Mirac D.

Currently unavailable: for regular students

Degree: Medicine (Bachelors) - Manchester University

Subjects offered: Biology, Science+ 5 more

Biology
Science
Maths
Human Biology
History
-Personal Statements-
-Medical School Preparation-

“About Me I am a final year medical student at Manchester. I have a keen interest in the sciences (especially in Biology) and I also have an extra undergraduate degree (a BSc in Pathology). I hope that my interest in science will give ...”

MyTutor guarantee

You may also like...

Posts by Mirac

How is blood glucose maintained in the body?

What is the role of mitochondria in animal cells?

Other A Level Biology questions

What is meant by the semi-conservative replication of DNA?

How is a message transferred across a synapse?

What is an enzyme?

What are the steps involved in the mark-release-recapture technique and which factors does it rely upon?

View A Level Biology tutors

Cookies:

We use cookies to improve our service. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok