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Ch 14: Peripheral Nervous System Sensory Receptors Motor Endings Cranial Nerves The Four Plexuses Extremities
Review of Reflexes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Fig 14.2
Peripheral Sensory Receptors ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Peripheral Sensory  Receptors,  cont’d ,[object Object],[object Object],[object Object],[object Object]
Peripheral Sensory Receptors,  cont’d ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Proprioception ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
The Other End (Effectors) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Peripheral Nerves  (repetitio est…) Definition: bundles of axons.  AKA tracts in CNS   Organization – coverings (chapter 12): Epineurium  – wraps entire nerve  Perineurium  – wraps fascicles of tracts Endoneurium  - wraps individual axons Function: sensory - afferent motor - efferent mixed - contains axons of both
Anatomy of a Peripheral Nerve
Cranial Nerves ,[object Object],[object Object],[object Object],[object Object]
Olfactory Nerve (= CN or N I) ,[object Object],[object Object],[object Object],[object Object]
Optic Nerve (N II) ,[object Object],[object Object],[object Object]
Oculomotor (N III) ,[object Object],[object Object],[object Object]
Trochlear (N IV) ,[object Object],[object Object],[object Object]
Trochlear Nerve (N IV) Oculomotor (N III) Lateral view
Trigeminal (CN V) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Abducens (CN VI) C : Motor  O : Pons D : Lateral rectus eye muscle
Facial (CN VII) ,[object Object],[object Object],[object Object],Table 14.3
Facial (CN VII),  cont’d Bell’s Palsy
Vestibulocochlear (CN VIII) ,[object Object],[object Object],[object Object],[object Object]
Vestibulocochlear (CN VIII)
Glossopharyngeal (CN IX) C : mixed O : sensory from posterior 1/3 of tongue / motor from medulla oblongata D : medulla / muscles for swallowing, parotid gland
Vagus (CN X) ,[object Object],[object Object],[object Object],[object Object]
 
Accessory (CN XI)   AKA Spinal Accessory  ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
N XII N XI
Mnemonics Out On Our Table Top Are Fruits, Very Green Veggies And Hamburgers   Oh, Once One Takes The Anatomy  Final, Very Good Vacations Appear Heavenly
Spinal Nerves ,[object Object],[object Object],[object Object]
4 Principal   Plexuses ,[object Object],[object Object],[object Object],[object Object],[object Object]
Cervical Plexus Phrenic nerve - innervates diaphragm
Brachial Plexus
Nerves  of the Arm Musculocutaneous nerve  – innervates biceps and brachialis muscles Median nerve  - innervates lateral flexors Ulnar nerve  - innervates medial flexors Radial nerve  - innervates forearm extensors
Lumbar Plexus Femoral Nerve Lumbosacral Trunk (to Sciatic Nerve) Obturator Nerve
Sacral Plexus
Nerves of the Leg ,[object Object],[object Object],[object Object],[object Object],[object Object]
Narrow lumbar disk spaces result in pressure on the spinal roots L-5  T-12
The white oval is a postsurgical cyst or abscess
Shingles ,[object Object],[object Object],[object Object]
 

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Chapter14 peripheralns marieb

  • 1. Ch 14: Peripheral Nervous System Sensory Receptors Motor Endings Cranial Nerves The Four Plexuses Extremities
  • 2.
  • 3.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8. Peripheral Nerves (repetitio est…) Definition: bundles of axons. AKA tracts in CNS Organization – coverings (chapter 12): Epineurium – wraps entire nerve Perineurium – wraps fascicles of tracts Endoneurium - wraps individual axons Function: sensory - afferent motor - efferent mixed - contains axons of both
  • 9. Anatomy of a Peripheral Nerve
  • 10.
  • 11.
  • 12.
  • 13.
  • 14.
  • 15. Trochlear Nerve (N IV) Oculomotor (N III) Lateral view
  • 16.
  • 17. Abducens (CN VI) C : Motor O : Pons D : Lateral rectus eye muscle
  • 18.
  • 19. Facial (CN VII), cont’d Bell’s Palsy
  • 20.
  • 22. Glossopharyngeal (CN IX) C : mixed O : sensory from posterior 1/3 of tongue / motor from medulla oblongata D : medulla / muscles for swallowing, parotid gland
  • 23.
  • 24.  
  • 25.
  • 26. N XII N XI
  • 27. Mnemonics Out On Our Table Top Are Fruits, Very Green Veggies And Hamburgers Oh, Once One Takes The Anatomy Final, Very Good Vacations Appear Heavenly
  • 28.
  • 29.
  • 30. Cervical Plexus Phrenic nerve - innervates diaphragm
  • 32. Nerves of the Arm Musculocutaneous nerve – innervates biceps and brachialis muscles Median nerve - innervates lateral flexors Ulnar nerve - innervates medial flexors Radial nerve - innervates forearm extensors
  • 33. Lumbar Plexus Femoral Nerve Lumbosacral Trunk (to Sciatic Nerve) Obturator Nerve
  • 35.
  • 36. Narrow lumbar disk spaces result in pressure on the spinal roots L-5 T-12
  • 37. The white oval is a postsurgical cyst or abscess
  • 38.
  • 39.  

Editor's Notes

  1. do NOT require cerebral processing but can be modified by cerebral control
  2. Scm = sternocleido mastoid muscle
  3. Plexus - plexuses