SAR SH 522 Lecture Notes - Lecture 7: Special Visceral Efferent Fibers, Special Visceral Afferent Fibers, General Somatic Afferent Fibers

• School: Boston University
• Department: Speech, Language & Hearing Sciences
• Course: SAR SH 522
• Professor: Polyak

Document Summary

The cranial nerves corticobulbar tract: move our head, neck, face. Cranial nerves are peripheral nerve components that arise from the brain stem. They are similar to spinal nerves, previously discussed. Sensory cranial nerves receive information from the body and transits it to the brain (afferent) Motor cranial nerves relay information from the brain and transmit it to the body (efferent) Together, spinal nerves and cranial nerves serve the peripheral body and head/neck respectively. Cranial nerves are often referred to by roman numeral, or both. The number assigned to the cranial nerves are based on the level of the brain stem they arise: Cranial nerves can have sensory function motor function or mixed. Cranial nerves: olfactory sensory, optic sensory, oculomotor motor, trochlear motor. 5. trigeminal both: abducens motor. 7: vestibulocochlear sensory, glossopharyngeal both, vagus both, accessory motor, hypoglossal motor facial both. General: bers are found both in cranial nerves and spinal nerves. Special: bers are found only in cranial nerves.