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20 Cards in this Set
- Front
- Back
Cranial Nerve I
Olfactory |
Component: Sensory - afferent info coming in.
Function: Smell Tract: Olfactory cells of nasal mucosa->olfactory bulbs -> pyriform cortex |
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Cranial Nerve II
Optic |
Components: Sensory
Function: Vision Tract: retinal ganglion cells -> optic chiasm -> thalamus (Geniculate) -> primary visual cortex in occipital lobe |
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Cranial Nerve III
Oculomotor Component 1 |
Component 1: motor (move eye)
Function: Movement of eyeball and lens accomodation. Structures innervated: 4 eyeball muscles and 1 eyelid muscle |
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Cranial Nerve III
Oculomotor Component 2 |
Component 2: Parasympathetic
Nucleous location: midbrain Function: pupil constriction (sympathetic causes dialation) Structures innervated: ciliary muscle and pupilary constrictor muscle. |
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Cranial Nerve IV
Trochlear |
Component: Motor
Function: moves eyeball Nucleous location: midbrain Structures innverated: superior oblique muscle |
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Cranial Nerve V
Trigeminal Component 1 |
Component 1: Sensory(impulses of touch, pain, heat, and cold)
Location of Nuclei: pons and medulla Function: 1.sensations 2. general sensory from tongue 3. proprioception Structures innervated: 1. face, scalp, teeth, lips, eyeballs, nose & throat lining 2. anterior 2/3 of tongue 3. muscles of mastication |
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Cranial Nerve V
Trigeminal Component 2 |
Component 2: motor
Function: chewing Nucleous location: trigeminal motor nucleous in pons Structures innervated: muscles of mastication |
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Cranial Nerve VI
Adbucens |
Component: Motor
Function: Eyeball movement Nucleous: abducens nucleus in pons Structures innervated: lateral rectus muscle of eye |
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Cranial Nerve VII
Facial Component 1 |
Component 1: Sensory
Function: taste & proprioception Nucleus location: medulla Structures innervated: 1. anterior 2/3 of tongue 2. face and scalp |
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Cranial Nerve VII
Facial Component 2 |
Component 2: Motor
Function: facial expression Nucleus location: facial motor nucleus in pons Structure innervated: muscles of the face |
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Cranial Nerve VII
Facial Component 3 |
Component 3: Parasympathetic
Function: Salavation and lacrimation(drooling and tears) Nucleus location: Superior salivatory nucleus in medulla Structure innervated: salivary and lacrimal glands via submandibular and pterygopalatine ganglia |
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Cranial Nerve VIII
Vestibulocochlear aka acoustic or auditory nerve |
Component: Sensory - location inner nerve
Functions: Balance & hearing Nucleus: pons and medulla Structures innervated: 1. vestibular apparatus of internal ear 2. cochlear of inner ear 3. auditoy cortex in the temporal lobes |
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Cranial Nerve IX
Glossopharyngeal Component 1 |
Component 1: Sensory
Function: 1. taste 2. proprioception for swallowing 3. blood pressure receptors Nucleus location: medulla Structures innervated: 1. posterior 2/3 of tongue 2. throat muscles 3. carotid sinuses |
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Cranial Nerve IX
Glossopharyngeal Component 2 |
Component 2: Motor
Function: 1. swallowing and gag reflex 2. tear production Nucleus location: medulla Structure innervated: 1. throat muscles 2. lacrimal glands |
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Cranial Nerve IX
Glossopharyngeal Component 3 |
Component 3: Parasympathetic
Function: saliva production Structures innervated: parotid glans - include parotid, submandibular, and sublingual |
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Cranial Nerve X
Vagus Component 1 |
Component 1; Sensory
Function: 1. chemoreceptore 2. pain receptors 3. sensations 4. taste Nucleus location: medulla Structures innervated: 1. blood oxygen concentration, carotid bodies 2. respiratory and digestive tracts 3. external ear, larynx & pharynx 4. tongue |
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Cranial Nerve X
Vagus Component 2 |
Component 2: Motor
Function: 1. heart rate stroke volume 2. peristasis 3. air flow 4. speech and swallowing Nucleus location: Medulla Structures innervated: 1. pacemaker & ventricle muscles 2. smooth muscles of the digestive tract 3. smooth muscle of bronchial tubes 4. muscles of larynx & pharynx |
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Cranial Nerve X
Vagus Component 3 |
Component 3: Parasympathetic - helps to improve digestion
Structures innervated: smooth muscles and glands of the same areas innervated by motor components, as well as thoracic & abdominal areas |
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Cranial Nerve XI
Spinal Accessory |
Component: Motor
Function: Head rotation and shoulder shrugging Nucleus location: accessory nucleus in medulla Structures innervated: trapezius and sternocleidomastiod muscles (head rotation muscle) |
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Cranial Nerve XII
Hypoglossal |
Component: Motor
Function: Speech & swallowing Nucleus location: medulla Structures innervated: throat and tongue muscles |