Human beings have closed circulation system implying that blood does not leave the blood vessels system which consists of veins, arteries and capillaries (Universereview.ca, 2010). Humans have four heart chambers resulting to a two circuits that is pulmonary and systemic (Double circulation system).
The air enters through the nostrils to lungs then to the heart, is absorbed in the blood arteries which transports oxygen (apart from pulmonary arteries) to the body (Chandra, 2010). The carbon dioxide from the body tissues is carried by blood through the veins (except pulmonary veins) to the heart to the lungs and finally to nostrils (Chandra, 2010).
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.
Read moreEach paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.
Read moreThanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.
Read moreYour email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.
Read moreBy sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.
Read more