Functional Components Q General somatic efferent fibers(GSE): innervate skeletal muscles of eye and tongue Special visceral efferent fibers(SVE): transmit motor impulses from the brain to skeletal muscles derived from brachial (gill) arches of embryo. These include the muscles of mastication, facial expression and swallowing Q General visceral efferent fibers(GVE: transmit motor impulses from the general visceral motor nuclei and relayed in parasympathetic ganglions The postganglionic fibers supply cardiac muscles smooth muscles and glands
Functional Components General somatic efferent fibers (GSE): innervate skeletal muscles of eye and tongue Special visceral efferent fibers (SVE): transmit motor impulses from the brain to skeletal muscles derived from brachial (gill) arches of embryo.These include the muscles of mastication, facial expression and swallowing General visceral efferent fibers (GVE): transmit motor impulses from the general visceral motor nuclei and relayed in parasympathetic ganglions. The postganglionic fibers supply cardiac muscles ， smooth muscles and glands
Sensory fiber related ganglion in the cranial nerve Cell body of both somatic sensory visceral sensory neuron are located in sensory ganglion, their peripheral branch distributes to receptor and central branches to related sensory nucleus. there are six pairs of sensory ganglions in cranial nerve CNS PNS Sensory ganglion Central branch peripheral branch Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University
Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Cell body of both somatic sensory & visceral sensory neuron are located in sensory ganglion,their peripheral branch distributes to receptor and central branches to related sensory nucleui.there are six pairs of sensory ganglions in cranial nerve Sensory fiber & related ganglion in the cranial nerve CNS PNS Sensory ganglion Central branch peripheral branch
Classification of cranial Nerves Sensory cranial nerves: are composed entirely of afferent (sensory) nerve fibers bringing sensations the brain I Olfactory nerve II Optic nerve Vu vestibulocochlear nerve Motor cranial nerves: are composed entirely of efferent (motor) fibers Il Oculomotor nerve TV Trochlear nerve Vi Abducent nerve XI Accessory nerve XI Hy poglossal nerve Mixed cranial nerves: possess both sensory and motor fibers-- V Trigeminal nerve Ⅶ Facial nerve IX Glossopharyngeal nerve X Vagus nerve
Classification of Cranial Nerves • Sensory cranial nerves: are composed entirely of afferent (sensory) nerve fibers bringing sensations the brain Ⅰ Olfactory nerve Ⅱ Optic nerve Ⅷ Vestibulocochlear nerve • Motor cranial nerves: are composed entirely of efferent (motor) fibers Ⅲ Oculomotor nerve Ⅳ Trochlear nerve Ⅵ Abducent nerve Ⅺ Accessory nerve Ⅻ Hypoglossal nerve • Mixed cranial nerves: possess both sensory and motor fibers-- Ⅴ Trigeminal nerve, Ⅶ Facial nerve, Ⅸ Glossopharyngeal nerve Ⅹ Vagus nerve
Copy Right- Hong Olfactory Nerve Fudan University Olfactory cells(SvA) Cribriform foramina -Olfactory bulb Component sensory Connect telencephalon Opening cribriform foramina Distribution olfactory mucosa Clinic olfactory dysfunction Copy Rignt- Honggi ZHANG-Depdrahrento yuan University
Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Component sensory Connect telencephalon Opening cribriform foramina Distribution olfactory mucosa Clinic olfactory dysfunction Olfactory Nerve Olfactory cells (SVA) → Cribriform foramina → Olfactory bulb
Copy Right- Hongqi tomy-Fudan University Optic Nerve Component sensory Connect diencephalon Opening optic canal Distribution retina Clinic partial or full blind Copy Right- Hongqi ZHA/' U Department of Anatomy-Fudan University
Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Component sensory Connect diencephalon Opening optic canal Distribution retina Clinic partial or full blind Optic Nerve