AP PSYCHOLOGY

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. For example, you have one pair of olfactory nerves.

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: -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-4: -Olfactory nerve (CN I), optic nerve (CN II), oculomotor nerve (CN III), trochlear nerve (CN IV), trigeminal nerve (CN V), abducens nerve (CN VI), facial nerve (CN VII), vestibulocochlear nerve (CN VIII), glossopharyngeal nerve (CN IX), vagus nerve (CN X), accessory nerve (CN XI), and hypoglossal nerve (CN XII).

Detailed explanation-5: -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.