Peripheral Nervous System
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| How many pairs of cranial nerves are there? | 12
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| Except for one, cranial nerves serve only the? | Head and neck structures
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| What are the nerves numbered with? | Roman numerals
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| How can the names of the nerves be remembered? | "Oh, Oh, Oh, to touch and feel very good velvet, ah ah!"
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| How can the you remember if the nerves are sensory, motor, or both? | "Some say marry money, but my brothers says bad business marry money"
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| "Oh" Olfactory nerve (CNI) | Sensory nerve, carries afferent impulses for the sense of smell, and olfactory bulbs are located on the inferior surface of the frontal lobes
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| "Oh" Optic nerve (CNII) | Sensory nerve, carries afferent impulses for vision, optic nerves converge to form the optic chiasma and then separates as the optic tracts
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| "Oh" Oculomotor nerve (CNIII) | Motor nerve, inferior oblique muscle, superior rectus muscles, inferior rectus muscle, medial rectus muscle, and causes pupil constriction and controls lens shape for visual focusing
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| "To" Trochlear nerve (CNIV) | motor nerve, motor to the superior oblique muscle (depresses the eye and turns to laterally), trochlear emerge from the dorsal surface of the midbrain
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| How many pairs of cranial nerves are there? | 12
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| Except for one cranial nerves serve only the? | Head and neck structures
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| What are the nerves numbered with? | Roman numerals
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| How can the names of the nerves be remembered? | "Oh, Oh, Oh, to touch and feel very good velvet, ah ah!"
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| How can the you remember if the nerves are sensory, motor, or both? | "Some say marry money, but my brothers says bad business marry money"
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| "Oh" Olfactory nerve (CNI) | Sensory nerve, carries afferent impulses for the sense of smell, and olfactory bulbs are located on the inferior surface of the frontal lobes
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| "Oh" Optic nerve (CNII) | Sensory nerve, carries afferent impulses for vision, optic nerves converge to form the optic chiasma and then separates as the optic tracts
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| "Oh" Oculomotor nerve (CNIII) | Motor nerve, inferior oblique muscle, superior rectus muscles, inferior rectus muscle, medial rectus muscle, and causes pupil constriction and controls lens shape for visual focusing
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| "To" Trochlear nerve (CNIV) | motor nerve, motor to the superior oblique muscle (depresses the eye and turns to laterally), trochlear emerge from the dorsal surface of the midbrain
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| "Touch" Trigeminal nerve (CNV) | Mixed nerve, largest, divided into 3 parts (ophthalmic, maxillary, and mandibular), major general sensory nerves of the face, motor to the muscles of mastication
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| "And" Abducens nerve (CNVI) | motor nerve, motor to the lateral rectus muscle which moves eye laterally, nerves emerge from the inferior pons
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| "Feel" Facial nerve (CNVII) | mixed nerve, primarily motor to face, divided into 5 parts: Temporal, Zygomatic, Buccal, Mandibular, Cervical (Two Zebras Bit My Cow)
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| "Very" Vestibulocochlear nerve (CNVIII) | Sensory nerve, vestibular branch transmits afferent impulses for sense of equilibrium, cochlear branch transmits afferent impulses for sense of hearing
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| "Good" Glossopharyngeal nerve (CNIX) | mixed nerve, motor to superior pharyngeal muscles, sensory to pharynx and posterior tongue
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| "Velvet" Vagus nerve (CNX) | mixed nerve, supplies the thoracic and abdominal vicera, regulates heart rate, breathing, and digestive system activity, 1 exception not head or neck
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| "Ah" Accessory nerve (CNXI) | motor nerve, motor to the larynx, pharynx, and soft palate, motor to the trapezius and the sternocleidomastoid muscles
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| "aH" Hypoglossal nerve (CNXII) | motor nerve, motor to the intrinsic and extrinsic muscles of the tongue
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| How many pairs of spinal nerves? | 31 pairs
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| Pairs of cervical nerves? | 8
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| Pairs of thoracic nerves? | 12
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| pairs of lumbar nerves? | 5
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| pairs of sacral nerves? | 5
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| pairs of coccygeal nerves? | 1
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| What kind of nerves are spinal nerves? | mixed nerves
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| How are spinal nerves formed? | by the union of the dorsal and ventral roots
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| After emerging from the vertebral column, what happens to the spinal nerve? | it divides into a large ventral ramus and a smaller dorsal ramus
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| Dermatomes | area of skin innervated by cutaneous branches of a single spinal nerve
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| Plexuses | nerve networks made up of the ventral primary rami, cervical plexus (C1-C4), brachial plexus (C5-T1), lumbar plexus (L1-L4), sacral plexus (L4-S4)
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Created by:
mchuan
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