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SHORT INTRODUCTION TO THE AUTONOMIC NERVOUS SYSTEM COORDINATES THE REGULATION AND INTEGRATION OF BODILY FUNCTIONS. ACTIVITIES ARE NOT UNDER DIRECT CONSCIOUS CONTROL.

A short introduction to the Autonomic Nervous System

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Page 1: A short introduction to the Autonomic Nervous System

SHORT INTRODUCTION TO THE AUTONOMIC NERVOUS

SYSTEM

COORDINATES THE REGULATION AND INTEGRATION OF BODILY FUNCTIONS.

ACTIVITIES ARE NOT UNDER DIRECT CONSCIOUS CONTROL.

Page 2: A short introduction to the Autonomic Nervous System

THE HUMAN NERVOUS SYSTEM DIVISIONS

1PERIPHERAL NERVOUS

SYSTEM

NERVOUS SYSTEM

2CENTRAL NERVOUS SYSTEM

Page 3: A short introduction to the Autonomic Nervous System

THE CENTRAL NERVOUS SYSTEMS

BRAIN

SPINAL CORD

Page 4: A short introduction to the Autonomic Nervous System

1-THE PERIPHERAL NERVOUS SYSTEM

EFFERENT/MOTOR NEURONS CARRY SIGNALS AWAY FROM THE CNS.

AFFERENT/SENSORY NEURONS CARRY SIGNALS TOWARDS CNS.

PERIPHERAL NERVOUS SYSTEMNEURONS ARE LOCATED

OUTDISE CNS.A-EFFERENT DIVISION

B- AFFERENT DIVISION

Page 5: A short introduction to the Autonomic Nervous System

A-EFFERENT DIVISION

a- AUTONOMIC NERVOUS SYSTEM

a- AUTONOMIC NERVOUS SYSTEM

b- SOMATIC NERVOUS SYSTEM

ENTERIC BRAIN OF THE GUTPARASYMPATHATIC CRANIOSACRAL DIVISIONSYMPATHATIC THORACOLUMBAR DIVISION

Page 6: A short introduction to the Autonomic Nervous System

THE NERVOUS SYSTEM SUMMARISED

Page 7: A short introduction to the Autonomic Nervous System

THE ENTERIC NERVOUS SYSTEM THIRD DIVISION OF ANS. INNERVATE GIT, PANCREAS AND

GALLBLADDER. CONSTITUTES THE BRAIN OF THE

GUT. MODULATED BY BOTH

PARASYMPATHETIC AND SYMPATHATIC NERVOUS SYSTEMS.

Page 8: A short introduction to the Autonomic Nervous System

PARASYMPATHETIC NERVOUS SYSTEM

PREGANGLIONIC FIBRES ARISE FROM CRANIAL NERVES (III,VII,IX,X) & SACRAL REGION (S2 TO S4) OF THE SPINAL CORD.

KNOW AS CRANIOSACRAL REGION. DOMINANT IN REST AND DIGEST

SITUATIONS. MAINTAIN HOMEOSTASIS. EXAMPLES INCLUDE DIGESTION AND

ELIMINATION OF WASTES.

Page 9: A short introduction to the Autonomic Nervous System

SYMPATHETIC NERVOUS SYSTEM

PREGANGLIONIC NEURONS ORIGINATE IN THORACIC AND LUMBAR REGION (T1 & L2) OF SPINAL CORD.

KNOWN AS THORACOLUMBAR REGION. RSPONDS TO STRESSFUL SITUTAIONS. PREPARES BODY FOR FIGHT AND FLIGHT

RESPONSE BY INCREASING HEART RATE AND BP , INCREASES BLOOD FLOW TO MUSCLES & HEART, DILATES PUPIL.

Page 10: A short introduction to the Autonomic Nervous System

SYMPATHEITIC AND PARASYMPATHETIC NERVOUS SYSTEMS , A COMPARISION

Page 11: A short introduction to the Autonomic Nervous System

PARASYMPATHETIC AND SYMPATHETIC NERVOUS SYSTEM, A COMPARSION

Page 12: A short introduction to the Autonomic Nervous System

THINGS TO REMEMBERNEURON ALSO CALLED AS A NERVE CELL.IT IS THE

BASIC STRUTUCRAL AND FUNCTIONAL CELL OF THE NERVOUS SYSTEMS.

PROCESSES AND TRANSMITS INFORMATION THROUGH ELECTRICAL AND CHEMICAL SIGNALS.

Page 13: A short introduction to the Autonomic Nervous System

PREGANGLIONIC NEURON A NEURON WHOSE CELL BODY IS

LOCATED WITHIN THE CENTRAL NERVOUS SYSTEM.

CONTAINS A MYELINATED AXON THAT TRAVELS OUT OF THE CNS.

MAKE A SYNAPTIC CONNECTION IN GANGLION (AGGREGATION OF NERVE CELL BODIES LOCATED IN PERIPHERAL NERVOUS SYSTEM).

Page 14: A short introduction to the Autonomic Nervous System

PREGANGLIONIC NEURON

Page 15: A short introduction to the Autonomic Nervous System

POSTGANGLIONIC NEURON NEURON WHOSE CELL BODY IS LOCATED

WITHIN A GANGLION OUTSIDE CNS AND WHOSE FIBRES EXTEND FROM THE GANGLION TO THE EFFECTOR ORGANS.

USUALLY NON-MYELINATED. GANGLIA SERVE AS RELAY STATION

BETWEEN THE PRE AND POST GANGLIONIC FIBRES (SEE PREVIOUS SLIDE).

Page 16: A short introduction to the Autonomic Nervous System

THAT’S ALL FOLKSTHANK YOU