Summary
Summary Body temperature and negative feedback notes + practice questions
- Course
- Institution
- Book
revision notes and practice questions for Paper 2 GCSE AQA Chemistry; got a 9 for 2021 exam
[Show more]
Connected book
Book Title:
Author(s):
- Edition:
- ISBN:
- Edition:
More summaries for
-
Summary mind map for AQA GCSE Biology Paper 2 Everything You Need To Know ( From A Top Student )
-
Easy Summary of AQA GCSE Biology Paper 2 ( top grade student last minute revision )
-
AQA GCSE Biology (triple) notes Chapter 2-10
Seller
Follow
m1crowav
Content preview
4.5.2.4 Control of bodytemperature
By the end of this module you
understand / be able to:
• Body temperature is monitored and controlled by the
thermoregulatory centre in the brain. The thermoregulatory centre
contains receptors sensitive to the temperature of the blood. The
skin contains temperature receptors and sends nervous impulses to
the thermoregulatory centre.
• If the body temperature is too high, blood vessels dilate
(vasodilation) and sweat is produced from the sweat glands. Both
these mechanisms cause a transfer of energy from the skin to the
environment.
• If the body temperature is too low, blood vessels constrict
Why is it so important for human body temperature to be
maintained at 37oC?
Because temperature is directly linked to enzyme controlled
reactions, such as digestion, which happen all around our body and
if the temperature would be lower, those reactions wouldn’t
happen fast enough and the person would die; same as if the
temperature would get too high, the enzymes would start
denaturing and the person would also die
Thermoregulatory Centre
Core body temperature is monitored by the thermoregulatory centre, located in the
hypothalamus of the brain. The thermoregulatory centre contains receptors
sensitive to the temperature of the blood. The skin contains temperature receptors
and sends nervous impulses to the thermoregulatory centre.
, Anatomy of the skin (just need to be aware of sweat glands, hairs and
blood vessels)
Vasoconstriction & Vasodilation
VASOCONSTRICTION –
explain what is going on in the
diagram below, when the core
body temperature drops too
low
- Skin capillaries constrict
(get narrower) in order to
reduce the flow of blood
next to the surface by
capillaries
- Less heat will be lost from
the surface of the skin via
radiation
VASODILATION – explain
what is going on in the diagram
below, when the core body
temperature gets too high?
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller m1crowav. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $0.00. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75057 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now