SPINAL CORD

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SPINAL CORD SPINAL NERVES

• MARTINI, ANATOMY PHYSIOLOGY, 7TH EDITION,
  CHAPTER 13
• LAB MANUAL, CHAPTER 7

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PRESENTATION CREATED BY ALFONSO A. PINO.
MD.COLLABORATORPROFESSOR NIDIA ROMER.
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NOTE

• THIS IS A STUDY GUIDE, NOT AN ALL INCLUSIVE
  REVIEW.
• THERE MIGHT BE THINGS NOT COVERED BY THIS STUDY
  GUIDE THAT MIGHT BE ASKED IN YOUR PRACTICUMS /
• QUIZZES.
• STUDENTS ARE RESPONSIBLE FOR READING THEIR
  TEXBOOK (S) AND FOR ALL THE MATERIAL COVERED
  DURING THE LABORATORY PERIOD, AS PER THE COURSE
  SYLLABUS

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SPINAL MENINGES

• SURROUDS THE SPINAL CORD FOR PHYSICAL STABILITY
• 
  SHOCK ABSORPTION
• WALL OF VERTEBRAL CANAL (NO PART OF MENINGES)
• EPIDURAL SPACE- CONTAINS FAT AND BLOOD VESSELS
  
• 
  IMP FOR ANESTESIC INJECTION
• DURA MATER- OUTERMOST COVERING OF SPINAL CORD
• SUBDURAL SPACE
• ARACNOID MATER
• SUBARACNOID SPACE- FILLED WITH CSF
• CSF- SHOCK ABSORBER
• DIFFUSIUM MEDIUM FOR WASTES,
  GASES,
• NUTRIENTS CHEMICALS
• PIA MATER -PIADELICATE, MATERMOTHER FOR
• 
  NOURISHEMENT

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SPINAL CORD

• DENDICULAR LIGAMENTS- PREVENT LATERAL
• 
  MOVEMENT OF THE SPINAL CORD
• CONUS MEDULARIS-
• END PART OF THE SPINAL CORD, LIKE A CONUS
• CAUDA EQUINA- NERVE FIBERS EXTENDING AFTER
• CONUS MEDULARIS, LIKE
  A HORSE TAIL
• FILUM TERMINALE- TO ANCHOR SPINAL CORD
  VERTICALLY BY CONNECTING IT WITH COCCYX
• F- TO PREVENT UP DOWN MOVEMENT
• GRAY MATTER- IT HAS NUCLEI
• POSTERIOR (DORSAL) HORNS SOMATIC
  VISCERAL
• 
  SENSORY NUCLEI
• ANTERIOR (VENTRAL) HORNS-SOMATIC MOTOR
• 
  NUCLEI
• LATERAL HORNS- AUTONOMIC (VISCERAL) NUCLEI

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• GREY COMMISSURE- TO CONNECT TWO SIDES OF THE
• 
  GREY MATTER
• CENTRAL CANAL (THE HOLE IN THE MIDDLE)-
• CONTEINS
  CSF(CEPHALO SPINAL FLUID)
• WHITE MATTER- IT HAS TRACS OR FASCICULUS
• POSTERIOR (DORSAL) WHITE COLUMN
  (FUNICULUS)
• 
  CARRY SENSORY INFO
• LATERAL WHITE COLUMN (FUNICULUS)-
• 
  CARRY SENSORY MOTOR INFO
• ANTERIOR (VENTRAL) WHITE COLUMN
  (FUNICULUS)
• 
  CARRY SENSORY MOTOR INFO
• ANTERIOR MEDIAN FISSURE- DEEP GROOVE
• POSTERIOR MEDIAN SULCUS- SHALLOW GROOVE

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SPINAL NERVES

• POSTERIOR ROOT- CARRY SENSORY INFO
• POSTERIOR ROOT GANGLIA- CONTEINS SENSORY NEURONS
  
  
• ANTERIOR ROOT- CARRIES MOTOR INFO
• POSTERIOR RAMUS (SMALLER)- CARRIES SENSORY
  MOTOR INFO
• 
  
  
• ANTERIOR RAMUS- (THICKER)- CARRIES SENSORY
  MOTOR INFO

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PLEXUSES

• CERVICAL
• BRACHIAL
• LUMBAR
• SACRAL

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CERVICAL PLEXUS

• SERVES OR INNERVATES NECK SHOULDER
• PHRENIC NERVE- IT EXTENDS BELOW THE
• SHOULDER TO THE
  DIAPHRAGM.
• IT CAUSES THE DIAPHRAGM TO CONTRACT
  
  
• IMP- FOR BREATHING

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• BRACHIAL PLEXUS- SERVES OR INNERVATES UPPER LIMB
  
• 
  SHOULDER
• AXILLARY N- SERVES DELTOID TERES
  MINOR
• AND
  SKIN OF THE SHOULDER
• 
  (FROM ANTERIOR TO POSTERIOR)-
• RADIAL NERVE- SERVES POSTERIOR
  UPPER LIMB
• MUSCULOCUTANEOUS N-SERVES ANTERIOR
  ARM,
• 
  BICEPS BRACHII BRACHIALIS
• MEDIAN N- SERVES ANTERIOR FOREARM
• ULNAR N- SERVES ANTERIOR HAND

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LUMBAR PLEXUS

• IT SERVES OR INNERVATES SKIN SOME MUSCLES OF
  ANTERIOR ABDOMEN, BUTTOCKS, GENITALIA, ANTERIOR
  LATERAL POSTEROMEDIAL THIGH MEDIAL SURFACE OF
  LEG AND FOOT
• FEMORAL NERVE ANTERIOR MUSCLES OF THE
  THIGH, FLEXORS ADDUCTORS OF THE HIP, SKIN OF
  THE THIGH(ANTERO MEDIAL SURFACE) SKIN OVER THE
  MEDIAL SURFACE OF LEG AND FOOT
• RECTUS FEMORIS
• VASTUS MEDIALIS
• VASTUS LATERALIS
• VASTUS
  INTERMEDIUS

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LUMBAR PLEXUS SACRAL PLEXUS
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SACRAL PLEXUS

• IT SERVES OR INNERVATES BUTTOCK (GLUTEUS)
  
• POSTERIOR LOWER LIMB, ANTERIOR LEG
  FOOT
• LATERAL LEG, SOME MUSCLES OF GENITALIA
  
• INCLUDING EXTERNAL ANAL AND URETHRAL
• 
  SPHINCTERS
• SCIATIC N (THIKER)- SERVES POSTERIOR THIGH
• COMMON PERONEAL N (GOES ANTERIORLY)- SERVES
  
  ANTERIOR LEG FOOT
• TIBIAL N (GOES POSTERIORLY)- SERVES POSTERIOR
  LEG
  
  FOOT

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LUMBAR PLEXUS SACRAL PLEXUS
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