Explain, physiologically, how you would decide to use ice or heat on an injury?

My book doesn't have any good info on this question. Is there a reputable website or article to get info to answer this question?

http://orthopedics.about.com/cs/sportsmedicine/a/iceorheat.htm

http://health.howstuffworks.com/medicine/first-aid/ice-or-heat-for-injury.htm

When deciding whether to use ice or heat on an injury, it's important to understand how each affects the body physiologically. Ice and heat have different effects on blood vessels, inflammation, and pain perception, which can guide your decision.

To find information on this topic, I would recommend looking for reputable sources such as medical websites, academic journals, or articles written by healthcare professionals. Here are a few reliable websites that can provide further insights on this subject:

1. Mayo Clinic: The official website of Mayo Clinic offers comprehensive information on various health topics, including when to use ice or heat on injuries. You can search for their articles on pain management, sports injuries, or specific body parts that you are interested in.
Website: www.mayoclinic.org

2. WebMD: WebMD is a well-known source for medical information. They have articles and resources explaining the uses of ice and heat therapy, as well as their benefits and risks.
Website: www.webmd.com

3. National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS): NIAMS provides reliable information on musculoskeletal conditions, including injuries and their treatments. They have resources dedicated to offering guidance on using ice or heat for different types of injuries.
Website: www.niams.nih.gov

4. American Academy of Orthopaedic Surgeons (AAOS): The AAOS website provides educational materials on orthopedic conditions and treatments. They often discuss the use of ice and heat in managing injuries and offer practical guidelines.
Website: www.aaos.org

By consulting these resources, you should be able to find detailed information that explains the physiological effects of ice and heat on injuries, helping you make an informed decision on which method to use.