The two main muscles of inspiration are the diaphragm and the external intercostal muscles.

In the mouth there is secretion of the following enzymes:

The respiratory center is found in:

Where on the figure is the tracheal cartilage?  Enter the corresponding letter for this structure.

Excess of glucose will be converted in the form of proteins as a preferred storage.

This is the preferred source for ATP production:

Most of the ATP is produced during this process:

There are three secondary bronchi in the right lung, whereas there are two in the left lung.

Digestion in the lumen of the small intestine is performed by these enzymes:

What is labeled with a “K”?