Logged out
Access All our Essays in an Instant
Swap your work for FREE access, or pay £4.99 for instant access
Discover the effect of differing body states on the pulse rate of a 13/14 year old male. The body states are lying down, seated, standing up, jogging on the spot.
Member rating:
(1 vote)
| Words:
| Submitted: Fri Feb 20 2004
Page Preview
On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:
Background: The heart is the body's most important organ. Without it nothing would work. The heart has the tiresome job of pumping blood around the body non-stop. Without it, the human race wouldn't exist. Some areas need more blood then others, so the body's veins and arteries siphon off the blood accordingly. The heart is a muscular organ which pumps blood around the blood vessels (the heart and blood vessels together are called the cardiovascular system). It is surrounded by the pericardial sac. This consists of an outer membrane (the pericardium) and the cavity (pericardial cavity) between it and the heart. This cavity is filled with a cushioning fluid (pericardial fluid). The heart has four chambers - two atria and two ventricles, all lined by a thin tissue layer called the endocardium. Oxygenated blood from the lungs is sent to the heart so it can be pumped all over the body....
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 147,187 others
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
