GRADES

Thursday, 4 October 2018

RESPIRATORY SYSTEM


THE RESPIRATORY SYSTEM
It absorbs oxygen into the body and releases carbon dioxide. The lungs and the trachea are organs of the respiratory system.
There are two processes involved in respiration: pulmonary ventilation and gas exchange.
  • PULMONARY VENTILATION is the movement of air into and out of the lungs. This process is performed by two movements inspiration and expiration.
  • GAS EXCHANGE take place in the alveoli.During this porcess, oxygen from the outside air passes into your blood and carbon dioxide which is in the blood passes to your lungs and leaves your body.


Now, it is time to have a look how respiration is performed.


Rowan Atkinson is hilarous!!


Friday, 28 September 2018

PRESENT CONTINUOUS GAMES


DIGESTIVE SYSTEM


THE DIGESTIVE SYSTEM

It breaks food we eat into smaller molecules that our body can absorb. The stomach and the intestines are organs of the digestive system.

There are 3 stages in the digestive process:
  • DIGESTION: it is the set of changes to food as it travels along the digestive tract. The objective is to transform food into nutrients.
  • ABSORPTION: in the absorption stage the nutrients pass to the blood through capillaries which are found in the villi in the small intestine walls.
  • EXCRETION: the final stage of the digestive process includes the preperation and elimination of the part of our food that our body does not need.



Let's see how food travels inside your body