THE NEURAL TISSUE MARTINI, ANATOMY

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THE NEURAL TISSUEMARTINI,
ANATOMY PHYSIOLOGY,7TH EDITION, CHAPTER
12LAB 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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NEURAL TISSUE

• NEURON STRUCTURE
• CLASSIFICATION OF NEURONS BY
• 
  STRUCTURE
• CLASSIFICATION OF NEURONS BY
• 
  FUNCTION
• SCHWANN CELLS
• GREY MATTER
• WHITE MATTER

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NEURON STRUCTURE

• CELL BODY (SOMA)
• NEUROFIBRILS (BLACK OR BROWN LINES IN MODEL)
• F- INTRACELLULAR TRANSPORT
• NISSIL BODIES- BLUE IN ONE MODEL BLUE WITH
  RED
  DOTS IN ANOTHER MODEL
• F- PROTEIN SYNTHESIS
• DENDRITES- THEY ARE SHORT CITOPLASMATIC
• 
  PROJECTIONS FROM CELL BODIES
• F- TO RECEIVE THE NERVE IMPULSE OR
  SIGNAL
• AXON- IT IS A CITOPLASMATIC PROJECTION FROM THE
• 
  CELL BODY
• F-TO CARRY AWAY THE NERVE IMPULSE OR
  SIGNAL

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• AXON HILLOCK- THE PLACE WHERE THE
• THE
  NEUROFIBRILS CONVERGE
• F- TRIGGER ZONE FOR NERVE
  IMPULSE
• AXON TERMINALS- END PART OF THE NEURON
  
• THAT CONNECTS WITH ANOTHER
  NEURON
• F- TO RELEASE THE
  NEUROTRANSMITER
• 
  

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Martini pg 135
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NEURONS BY STRUCTURE

• ANAXONIC
• BIPOLAR
• UNIPOLAR
• MULTIPOLAR

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Figure 12-3 A Structural Classification of
Neurons
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• SCHWANN CELLS- THEY SURROUND THE AXON
• F- TO PRODUCE THE MYELIN SHEATH
• MYELIN SHEATH- LAYERS OF CELL MEMBRANE THAT
• SURROUND THE AXON (YELLOW IN THE
  MODELS
• F-TO ISOLATE THE AXON
• NEURILEMMA- OUTERMOST LAYER WITH NUCLEUS
• 
  OF THE SCHWANN CELL
• NODES OF RANVIER-AREA BETWEEN TWO SCHWANN
• 
  CELLS
• F- TO PRODUCE SALTATORY CONDUCTION
  
• (JUMPING CONDUCTION), TO INCREASE
  THE
• SPEED OF NERVE IMPULSE
  TRANSMISSION

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NEURONS BY FUNCTIONS

• SENSORY OR AFFERENT- IT CARRIES IFORMATION
• TOWARDS THE CNS (CENTRAL NERVOUS
• 
  SYSTEM)
• MOTOR OR EFFERENT- IT CARRIES INFORMATION
• 
  AWAY FROM CNS
• ASSOCIATION NEURONES OR INTERNEURONS-
• THEY CARRY IMPULSES BETWEEN
• SENSORY MOTOR NEURONS LOCATED AT
  CNS

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NEURONS BY FUNCTIONS
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• GREY MATTER- NON MYELINATED PARTS OF THE
• NEURONS GLIA
  (CELL BODIES)
• IT FORMS NUCLEI IN THE CNS
• WHITE MATTER- MYELINATED FIBERS
• IT FORMS TRACS IN THE CNS
• IT FORMS NERVES IN PNS (PERIPHERAL
• 
  NERVE SYSTEM)

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GRAY MATTER WHITE MATTER
(CNS)
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WHITE MATTER (CNS)
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WHITE MATTER
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REMEMBER!GO TO THE TUTORING ROOM AND PRACTICE
WITH MODELS.ROOM 3326.