How is body temperature regulated in mammals?

When it’s too hot, vasodilation occurs, in which the capillaries near the surface of the skin increase in diameter, allowing more blood to flow through them, releasing heat. Hairs on the skin lie flat. The sweat glands become active, which allows heat to be lost by evaporation. Some mammals will also begin to pant. When it’s too cold vasoconstriction will take place, limiting blood supply near the skin surface. The erector muscles in the skin will contract, causing hairs to stand up straight, trapping air. The sweat glands are inactive. Shivering (rapid contraction and relaxation of the muscles) to generate heat may also occur.

Answered by Aylin L. Biology tutor

5550 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

Describe the structure of DNA and where it is found inside a human cell


Oxygen is exchanged between the blood capillaries and the tissues. Give two ways in which capillaries are adapted for exchanging blood with the tissues.


Why might a person with coeliac disease have poor growth?


Carbon Dioxide and water are needed for photosynthesis. Write a balanced symbol equation for photosynthesis.


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences