Anatomy Lab 19: Nervous System (Brain & Cranial Nerves) PDF

Anatomy Lab 19: Nervous System (Brain & Cranial Nerves) Human Brain Model *required sheep brain ID ID Externally: 1. cerebrum: a. frontal lobe* b. parietal lobe* c. temporal lobe* d. occipital lobe* 2. gyrus (gyri pl.) - general 3. sulcus (sulci pl.) - general 4. longitudinal fissure* 5. central sul...

Anatomy Lab 19: Nervous System (Brain & Cranial Nerves) Human Brain Model *required sheep brain ID ID Externally: 1. cerebrum: a. frontal lobe* b. parietal lobe* c. temporal lobe* d. occipital lobe* 2. gyrus (gyri pl.) - general 3. sulcus (sulci pl.) - general 4. longitudinal fissure* 5. central sulcus 6. parieto-occipital sulcus 7. precentral gyrus 8. postcentral gyrus 9. lateral sulcus (Sylvian fissure) 10. transverse fissure (image on midsagittal view) 11. a. olfactory bulb* b. olfactory tract* 12. optic nerve (CN II)* 13. optic chiasm(a)* 14. optic tract* 15. mammillary body* 16. cerebral peduncles* 17. pituitary gland (if on model or sheep brain)* 18. cerebellum* (folia of cerebellar cortex are the little lines) 19. vermis* 20. brain stem > spinal cord (what can be visualized on sheep brain)* 21. trigeminal nerve (CN V)* 22. abducens nerve (CN VI)* 23. dura mater (not shown here, may be present on the sheep brain)* 24. falx cerebri (not shown here, may be present on the sheep brain)* 25. tentorium cerebelli (not shown here, may be present on the sheep brain)* ID internally (e.g. in midsagittal section): 1. cerebrum: cerebral cortex* 2. cerebrum: insular lobe (insula)* 3. corpus callosum* 4. fourth ventricle* 5. third ventricle* 6. cerebral aqueduct (aqueduct of the midbrain) 7. lateral ventricle(s)* 8. septum pellucidum (between lateral ventricles) 9. interventricular foramen (lateral ventricle to 3rd ventricle) 10. fornix* 11. thalamus* a. interthalamic adhesion 12. hypothalamus 13. epithalamus 14. pineal gland/body* 15. pons* 16. optic chiasm* 17. pituitary gland (if on model or sheep brain)* 18. midbrain* 19. tectum > corpora quadrigemina a. superior colliculus* (pl. colliculi) b. inferior colliculus* (pl. colliculi) 20. medulla oblongata* 21. mammillary body* 22. cerebral peduncles* 23. cerebellum a. arbor vitae* b. folia of cortex* (seen on #18 on pg. 1) Ventricles (numbered as on previous page) 7. lateral ventricles 9. interventricular foramen (canal) 5. 3rd ventricle 6. cerebral aqueduct 4. 4th ventricle Cranial nerves: (must name each as L./R.) # Name Location Action Sensory, Motor Autonomic or Both/Mixed CN I CN II CN III Olfactory Optic Oculomotor Nasal cavity to temporal lobe eye - thalamus/occipital lobe Midbrain to eye CN IV CN V Trochlear Trigeminal Midbrain to eye Pons to face (3 branches) CN VI CN VII Abducens Facial Pons to eye Pons CN VIII Vestibulocochlear Pons (vestibular) Medulla oblongata (cochlear) CN IX Glossopharyngeal Medulla oblongata CN X Vagus Medulla oblongata CN XI Accessory Medulla oblongata CN XII Hypoglossal Medulla oblongata Olfaction (smell) Vision Somatic: extraocular eye ms. & upper lid, Autonomic: pupil constriction, accommodation of lens Superior oblique ms (eye) Sensory: touch, pain & temp from face & tongue (ant 2/3) Motor: chewing (mastication), middle ear ms. Lateral rectus ms. Sensory: taste (ant 2/3 tongue), facial, neck & scalp senses Motor: facial ms (expression), production of tears & saliva Balance, equilibrium (sensory) Hearing (sensory & motor) Sensory: Taste (post 1/3 of tongue), swallowing, baroreceptors (BP), chemo receptors (O2 level) Motor: swallowing, saliva production Sensory: taste (epiglottis), proprioception from voice box, monitors O2/CO2, somatic ear; autonomic visceral organs Motor: swallowing, voice production, coughing, GI organs, ↓HR Sensory: proprioception/pain, neck/traps Motor: head & pectoral girdle Speech, swallowing, mvmt of head Sensory Sensory Motor (somatic & autonomic) Y Motor (somatic) Both Motor Both Y Sensory (has motor that does not innervate ms) Both Y Both Y Motor (sensory part enters SC) Motor Cranial Nerves (on lab quiz you must indicate L. or R.) 1) Olfactory n. a) Olfactory bulb b) Olfactory tract 2) Optic n. a) Optic chiasm b) Optic tract 3) Oculomotor n. 4) Trochlear n. 5) Trigeminal n. 6) Abducens n. 7) Facial n. 8) Vestibulocochlear n. 9) Glossopharyngeal n. 10) Vagus n. 11) Accessory n. 12) Hypoglossal n. 1 2b 1a 3 2a 2b 4 5 6 7 8 9 10 11 Cranial Nerve Mnemonics CN I (Olfactory n.) On CN II (Optic n.) On CN III (Oculomotor n.) On CN IV (Trochlear n.) They CN V (Trigeminal n.) Travelled CN VI (Abducens n.) Along CN VII (Facial n.) Finding CN VIII (Vestibulocochlear n.) Voldemort CN IX (Glossopharyngeal n.) Guarding CN X (Vagus n.) Very CN XI (Accessory n.) Ancient CN XII (Hypoglossal n.) Horcruxes Oh Oh Oh To Touch And Feel Very Green Vegetables And Herbs For Sensory vs Motor vs Both: Some Say Marry Money But My Brother Says Big Brains Matter Most 12