EVERYDAY SCIENCE

Detailed explanation-1: -How many cranial nerves are there? You have 12 cranial nerve pairs. Each nerve pair splits to serve the two sides of your brain and body.

Detailed explanation-2: -There are 12 pairs of cranial nerves in the human body. The olfactory nerve, optic nerve, facial nerve, oculomotor nerve, vagus nerve, hypoglossal, nerve, vestibulocochlear nerve, accessory nerve, trochlear nerve, glossopharyngeal nerve, trigeminal nerve and abducens nerve.

Detailed explanation-3: -Most doctors claim to have 12 cranial nerves, whereas humans in fact have 24 (12 pairs). However, on semantic grounds, we probably have 26. The name “olfactory nerve” presupposes smell, a perception of an airborne chemical stimulus that reaches consciousness.

Detailed explanation-4: -Hypoglossal nerve. Your hypoglossal nerve is the 12th cranial nerve. It’s responsible for the movement of most of the muscles in your tongue. It starts in the medulla oblongata and moves down into the jaw, where it reaches the tongue.

Detailed explanation-5: -The hypoglossal nerve is one of 12 cranial nerves. It’s also known as the 12th cranial nerve, cranial nerve 12 or CNXII. This nerve starts at the base of your brain. It travels down your neck and branches out, ending at the base and underside of your tongue.