How does the oxygen reach the body's cells?

Answer 1

Glucose: Having gone through the digestive system, it is absorbed in the small intestine into the blood. from here it can be transported to anywhere in the body

Oxygen: The oxygen is breathed into the alveoli, which are inside the lungs. these have a large surface area for absorption. The alveoli absorbs it straight into the blood.

Other useful tips

Small intestine: finger-like things called villi, these stick out of the wall of the small intestine. This is for (obviously) a bigger surface area for absorption.

Alveoli: these look like lots of bubbles, therefore having... Do i even need to say it? ... a bigger surface area for absorption

Villi:

http://neuromedia.neurobio.ucla.edu/campbell/epithelium/wp_images/107%20villi.jpg

Alveoli:

http://www.3dscience.com/img/Products/Images/clip_art/respiratory_alveoli_web.jpg

Answer 2

The red blood cells carry the oxygen around, and the white blood cells protects the body for sickness. The reason why we need glucose, is for the digestive system, the digestive system takes out the glucose from the food and the small intestines absorbs it. Oxygen is need for the respiratory system, basically it brings in oxygen that is diffused in the avioli. The cardiovascular system transports the energy that has now been made to the place in which it is needed.

Energy is made from oxygen and glucose, when they both are reacted together. Oxygen enters the body by the respiratory system and the glucose enters by the digestive system. These two system link together as it's a maths formulae for energy.

When glucose and oxygen are both in the body, the cardiovascular transport it blood to the place which the blood is needed to be in the body, like the muscles.

Glucose is systematically degraded into carbon dioxide and water in the presence of oxygen. The process (respiration) releases energy which is stored in the glucose molecule.

Answer 3

Through the blood. Oxygen is drawn in by the lungs, binds to hemoglobin proteins within erythrocytes (aka red blood cells), and the erythrocytes are then pumped by the heart throughout the body, supplying all cells with oxygen.

Answer 4

Oxygen enters the body through the respiratory system by inhaling air into the lungs. In the lungs, oxygen attaches to hemoglobin in red blood cells and is then transported through the bloodstream to cells in the body where it is used in cellular respiration to produce energy.

Answer 5

your blood is made of a liquid called plasmaand two types of cells: Red blood cells and white blood cells

Answer 6

through a series of complex chemical activity way too involved to go into here.

Answer 7

Through the lungs ,by the process of difusion.

Answer 8

Both of these substances are delivered to the cells of the body via the bloodstream.

Hope this helps!