Science in Medicine Revision guide

Explain the difference between a sign and a symptom. (4 marks)

Why are the wrist and neck good points on the body for measuring the pulse? Describe how you measure the pulse. (4 marks)

What are the optimum temperature and blood glucose levels of humans? (2 Marks)

Normal blood pressure is 120/80 mmHg. What are the names of the top and bottom numbers? (2 marks)

How is your blood glucose kept constant? (6marks)

Explain how we keep our internal body temperature constant when we are in a cold environment?( 5marks)

The ___________________ ____________________is the range of wavelengths or frequencies over which electromagnetic radiation extends. The X-ray region of the falls far outside the range of visible wavelengths and can pass through materials. In biological tissue, bones and metal appear_____________________, fate and muscle appear__________________ and air in the lungs appear__________________________. Two other ways in which X-Rays are used are in__________________________ and___________________________________ (5marks)

The abbreviation MRI means____________________ ______________________. It is a medical imaging technique that uses _______________________________and radio waves. It gives a _______________________of the brain while an_______________________ shows activity in the brain. (6 marks)

An ___________________________scan is a medical test that uses high-frequency sound waves to capture live images from the inside of your body. It's also known as ___________________________. If there is pain or swelling, it gives an ______________ view of organs, vessels, and tissues, without needing to make an incision. Unlike other imaging techniques, it uses no radiation so it is the preferred method for viewing a ______________________. This is because radiation can change its _____________ sequence. (5marks)

______________________is the process by which doctors can see inside the body without making an incision. An instrument called an ____________________ is used. It is a long tube with a ___________________ and ____________________ at the end. One way it is used is to do ____________________, where fluid or tissue is withdrawn from an area in the body for testing. (5marks)