The Respiratory system Copy

The respiratory system is responsible for helping you to breathe. Air (or oxygen) is drawn in through the nose (where it is warmed and filtered) and taken into the lungs via the trachea. Here, it passes along the bronchi and bronchioles before it reaches the alveoli where capillary exchange occurs.

Capillary exchange relates to the blood capillaries that surround the alveoli. The oxygenated blood passes through the alveoli and blood capillaries to enter the circulatory system. At the same time, deoxygenated blood from the body passes though the blood capillaries and alveoli to be expelled from the body.

There are two forms of respiration:

·         internal

·         external.

Internal respiration relates to cellular respiration (respiration occurring in the cells of the body.

External respiration relates to the movement of gases between the alveoli and blood capillaries.

respiratory presentation