The Term Respiration Is Derived from Latin Word “Respire”. It Means:

A) To Inhale

B) To Exhale

C) To Breathe

D) to Respire

Respiration is an important process in our body. During respiration, we inhale oxygen from the nose and exhale carbon dioxide. The word "respiration" comes from the Latin word respire, which means "to breathe."

There are two types of respiration:

1. Cellular respiration – This happens inside the mitochondria of cells.
2. External respiration (breathing) – This is the process of taking air in and out of the lungs. During breathing, oxygen enters the blood and carbon dioxide is removed.

The gaseous exchange happens in the tiny air sacs of the lungs called alveoli. The oxygen we inhale is used in cells to produce energy. Inside the mitochondria, oxygen helps break down food into carbon dioxide, water, and energy (ATP). The circulatory system carries oxygen to all parts of the body.

So, the correct answer is option C.