Coursework.Info - Inspiration in an Instant

On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:

James Fung 18thJanuary,2002 Biology investigation - investigating the relationship between the breathing rate and the carbon dioxide concentration of exhaled air Result: Breathing rate (Breathes per minutes) A B C D E Resting 12 14 8 12 15 2 minutes exercise 25 20 18 22 25 3 minutes rest 14 10 15 19 16 6 minutes rest 13 5 9 17 15 Carbon dioxide concentration (Carbon dioxide %) A B C D E Resting 19% 3.9% 8.1% 40.8% 6% 2 minutes exercise 20% 3.2% 8.3% 100% 31% 3 minutes rest 2.5% 13.9% 4.8% 47.3% 12% 6 minutes rest 6.3% 2.1% 3.5% 77.3% 9% Fig.2 Analysis: For those 5 sets of data I have got, I have drawn them up on Fig.1. Then I have chosen the one from person E to analyse further, which gives Fig.2. There are some chemoreceptors, which are situated in the medulla of the brain, the arch of the aorta and in the wall of the carotid arteries. And they are stimulated when there is an increase in carbon dioxide level inside our body. Then a nerve impulse is sent to the breathing system by these chemoreceptors in order to regulate the breathing rate. In response to an increase in the concentration of...

Get instant access

• Instant, unlimited access to our documents in full
• Swap your work for free access, or pay £4.99
• To see the full version of this document and 147,228 others

OR

Receive email updates for this category

• Simply tell us your email address and receive a weekly Study Help Email for FREE
• Receive 3 FREE essay views with each email
• Get all the latest essays from Coursework.Info & discussion from TheStudentRoom.co.uk