The Sheep Brain: Cranial Nerves
Published: 29.06.2013
Published: 29.06.2013
There are twelve cranial nerves, and they are not easy to remember. The fact that some are motor nerves, others sensory nerves, and still others both does not make things any easier. Here is an overview. With a musical mnemonic device!
And an addendum, also for students: The hypoglossal nerve (XII) is traditionally classified as a purely motor nerve. However, there is now debate as to whether it might not be sensorimotor after all. It is also listed as such in Trepel.
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A positional term – cranial means "towards the head." In relation to the nervous system, it refers to a direction along the neural axis, i.e., forward.
In animals (without upright gait), the designation is simpler, as it always means forward. Due to the upright gait of humans, the brain bends in relation to the spinal cord, where cranial also means "upward."
cranial
A positional term – cranial means "towards the head." In relation to the nervous system, it refers to a direction along the neural axis, i.e., forward.
In animals (without upright gait), the designation is simpler, as it always means forward. Due to the upright gait of humans, the brain bends in relation to the spinal cord, where cranial also means "upward."