Question

Respiration
Why is your left lung smaller than your right lung? __________________________
__________________________________________________________________
14. Accumulation of _______________________ causes pain in our muscles when
you are working “at a level more than your lungs can supply”.

Answer 1

1) Because the heart sits on the left side of the chest (cardiac notch/mediastinal space), the left lung is smaller and has only two lobes (vs three on the right).

14) Accumulation of lactic acid (lactate) causes muscle pain when working above the level your lungs can supply.