![]() ![]() ![]() Now let’s understand the terms special, general, somatic and visceral. Unlike spinal nerves which are always mixed, cranial nerves can be purely motor, purely sensory or mixed. If it travels from the periphery to the brain, then it is an afferent (sensory) nerve. If the information goes from the brain to the periphery, then it is an efferent (motor) nerve. The function of a nerve is to carry sensory and/or motor information between the body and the brain. They often bring confusion, so let’s explain them before proceeding. ![]() We’re sure that while reading textbooks, you encountered with terms such as afferent, efferent, mixed, general, visceral, special, somatic etc, these refer to modalities of the cranial nerves. Mnemonic (by the numerical order): Some Say Money Matters, But My Brother Says Big Brains Matter Most Mixed (both): trigeminal nerve (CN V), facial nerve (CN VII), glossopharyngeal nerve (CN IX), vagus nerve (CN X). Motor: Oculomotor nerve (CN III), trochlear nerve (CN IV), abducens nerve (CN VI), accessory nerve (CN XI), hypoglossal nerve (CN XII). Sensory: Olfactory nerve (CN I), optic nerve (CN II), vestibulocochlear nerve (CN VIII) On, On, On, They Traveled And Found Voldemort Guarding Very Ancient Horcruxes. Oh, Oh, Oh, To Touch And Feel Very Good Velvet, such- A Heaven 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). So let’s break the stigma of them being hard to understand, and learn this important neuroanatomy topic once and for all.Ī set of 12 peripheral nerves emerging from the brain that innervate the structures of the head, neck, thorax and abdomen. So we’re here to make it easier for you.Ĭranial nerves anatomy is essential for almost any medical specialty since they control so many body functions, such as rolling your eyes when you’re annoyed by something. You know when someone mentions cranial nerves and you roll your eyes all the way back to your midbrain? We know that cranial nerves have always been a challenging subject among anatomy students. ![]()
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