1 / 47

EXERCISE 19: BRAIN AND CRANIAL NERVES

EXERCISE 19: BRAIN AND CRANIAL NERVES. http://www.vision.caltech.edu/feifeili/101_ObjectCategories/brain/image_0026.jpg. FOREBRAIN. MIDBRAIN. HINDBRAIN. CEREBRUM. Transverse Fissure. ON PARIETAL LOBE Primary somato -sensory area. ON FRONTAL LOBE Primary motor area.

crete
Download Presentation

EXERCISE 19: BRAIN AND CRANIAL NERVES

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. EXERCISE 19: BRAIN AND CRANIAL NERVES http://www.vision.caltech.edu/feifeili/101_ObjectCategories/brain/image_0026.jpg

  2. FOREBRAIN MIDBRAIN HINDBRAIN

  3. CEREBRUM Transverse Fissure

  4. ON PARIETAL LOBE Primary somato-sensory area ON FRONTAL LOBE Primary motor area

  5. Cortex (superficial) is gray matterWhite matter is deeper

  6. DIENCEPHALON= thalamus + hypothalamus

  7. Endocrine Attachments Pineal Gland

  8. MENINGES Same setup as spinal cord— Dura mater most superficial, Arachnoid, Pia mater closest to brain

  9. Mesencephalic or CEREBRAL aqueduct

  10. CHOROID PLEXUSES Specialized capillaries in ventricles Produce CSF—Circulates from here to central canal (s. cord) & around outside of brain/cord too

  11. MIDBRAIN CORPORA QUADRIGEMINA

  12. HINDBRAIN

  13. HINDBRAIN--cerebellum

  14. Don’t Forget! • Sheep Brain Dissection next class!

  15. Sensory Nerve Attachments Optic nerves: to eyes Optic chiasm: cross Optic tracts: to brain

  16. CRANIAL NERVES 12 pairs Connect to brain: CN I cerebrum CN II thalamus CN III-XII brain stem O O O T T A F V G V A H S S M M B M B S B B M M Nerve names: Nerve functions:

  17. Brain Overload!! • Oh, Once One Takes The Anatomy Final, Very Good Vacations Are Heavenly… Or • Oh, Oh, Oh, To Touch And Feel Very Good VIOLINS, AH! • Some Say Marry Money, But My Brother Says Big BROWNIES Matter Most

  18. CN I: OLFACTORY • SENSORY • Smell • From olfactory epithelium • Olfactory nerve-bulb-tract • (Cribriform foramina of ethmoid) 14-21

  19. CN II: OPTIC • SENSORY • From retina • Optic nerve-chiasm-tract • (Optic canal-sphenoid) 14-22

  20. CN III: OCULOMOTOR • Mostly MOTOR • To eye muscles • (superior orbital fissures-sphenoid) 14-22

  21. CN IV: TROCHLEAR • Mostly MOTOR • To superior oblique eye muscles • (superior orbital fissures-sphenoid) 14-22

  22. CN V: TRIGEMINAL • Mixed (sensory and motor) • Ophthalmic Branch • Sensory-orbital, upper face structures • Maxillary Branch • Sensory-lower face structures • Mandibular Branch • Mixed-mouth

  23. 14-24

  24. CN VI: ABDUCENS • Mostly motor • To lateral rectus eye muscles • (superior orbital fissure) 14-23

  25. CN VII: FACIAL • Mixed • To parts of face • Expressions, tear/salivary glands 14-25

  26. CN VIII: VESTIBULOCOCHLEAR • Sensory, from inner ear • Vestibular branch • Balance, equilibrium • Cochlear branch • Hearing 14-26

  27. CN IX: GLOSSOPHARYNGEAL • Mixed to head and neck • Sensory: posterior tongue • Motor: pharyngeal muscles (swallowing), salivary gland 14-27

  28. CN X: VAGUS • Mixed to visceral organs, larynx, pharynx • Sensory: ear, diaphragm, organs • Motor: pharynx, digestive, respiratory, cardiovascular systems 14-28

  29. CN XI: ACCESSORY • Mostly motor • To muscles of neck, upper back • Cranial root • Fibers originate in medulla • Spinal root • Some motor fibers originate in spinal cord • Join at foramen magnum 14-29

  30. CN XII: HYPOGLOSSAL • Mostly motor • To tongue muscles 14-29

  31. CRANIAL NERVES

  32. Sheep Brain Dissection • Safety First! • Sharps: blades and blade holders • Goggles • Gloves • Biohazard waste disposal • No tissue down the drain! • Gloves also • Cleaning the dissection trays & your instruments

  33. Sheep Brain Dissection • http://www.gwc.maricopa.edu/class/bio201/brain/brshpx.htm

  34. Sheep Brain Superficial • Dura mater, pia mater • Lobes (frontal, parietal, temporal, occipital)

  35. Superficial • Pituitary gland • Olfactory bulbs • Optic nerves, optic chiasm, optic tract

  36. Sheep Brain Longitudinal section • Cerebral cortex (gray matter) • Cerebral white matter • Corpus callosum • third, 4th ventricles • Thalamus • Hypothalamus • Pineal gland • Superior colliculi • Inferior colliculi • Pons • Medulla oblongata • Cerebellum (arbor vitae, cerebellar cortex)

  37. Sheep Brain Transverse section • Lateral ventricles

  38. Sheep Brain Superficial • Dura mater, pia mater • Pituitary gland • Olfactory bulbs • Optic nerves, optic chiasm, optic tract • Cerebral cortex (gray matter) • Cerebral white matter • Corpus callosum • Lateral, third, 4th ventricles • Thalamus • Hypothalamus • Pineal gland • Superior colliculi • Inferior colliculi • Pons • Medulla oblongata • Cerebellum (arbor vitae, cerebellar cortex) Longitudinal section & Transverse section

More Related