Which muscles relax during a normal expiration?
Which TWO of the following choices are the primary inspiratory muscles involved in pulmonary ventilation? These are the ones you use during a normal inspiration.
We first breathe in oxygen (O2)
which makes it way to our alveoli
through the airways called bronchi
. This gas then enters the blood
and is picked up by red blood cells.
Red blood cells deliver the gas to the tissues.
The gas is used up in a process called cellular respiration which is necessary to make ATP (the usable energy of a cell).
In the process, carbon dioxide (CO2) is generated as a waste product.
This waste product is picked up by red blood cells from the tissues
and delivered to the alevoli
