P ERIPHERAL NERVOUS SYSTEM Dr Iram Tassaduq COMPONENTS OF PERIPHERAL NERVOUS SYSTEM Cranial nerves...

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Transcript of P ERIPHERAL NERVOUS SYSTEM Dr Iram Tassaduq COMPONENTS OF PERIPHERAL NERVOUS SYSTEM Cranial nerves...

Page 1: P ERIPHERAL NERVOUS SYSTEM Dr Iram Tassaduq COMPONENTS OF PERIPHERAL NERVOUS SYSTEM Cranial nerves Spinal nerves.
Page 2: P ERIPHERAL NERVOUS SYSTEM Dr Iram Tassaduq COMPONENTS OF PERIPHERAL NERVOUS SYSTEM Cranial nerves Spinal nerves.

PERIPHERAL NERVOUS SYSTEM

Dr Iram Tassaduq

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COMPONENTS OF PERIPHERAL NERVOUS

SYSTEM

Cranial nerves

Spinal nerves

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CRANIAL NERVES

12 pair of nerves that arise from brain & exit through foramina leading to muscles, glands & sense organs in head & neck

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THE SPINAL NERVES

31 pairs of spinal nerves (1st cervical above C1)mixed nerves exiting at intervertebral foramen

Page 6: P ERIPHERAL NERVOUS SYSTEM Dr Iram Tassaduq COMPONENTS OF PERIPHERAL NERVOUS SYSTEM Cranial nerves Spinal nerves.
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Page 8: P ERIPHERAL NERVOUS SYSTEM Dr Iram Tassaduq COMPONENTS OF PERIPHERAL NERVOUS SYSTEM Cranial nerves Spinal nerves.
Page 9: P ERIPHERAL NERVOUS SYSTEM Dr Iram Tassaduq COMPONENTS OF PERIPHERAL NERVOUS SYSTEM Cranial nerves Spinal nerves.
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EXTENT OF SPINAL CORD

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EXTENT OF SPINAL CORD Spinal cord grows

slowly as compared to vertebral column.

It ends at lower border of L1

Length of nerve roots increase progressively

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CAUDA EQUINA Roots of lumbar

and sacral nerves below the level of termination of cord form a vertical bundle of nerves that resemble a horse tail

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DERMATOME

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NERVE PLEXUSES Ventral rami branch & anastomose repeatedly to

form 5 nerve plexuses cervical in the neck, C1 to C5

supplies neck and phrenic nerve to the diaphragm brachial in the armpit, C5 to T1

supplies upper limb and some of shoulder & neck lumbar in the low back, L1 to L4

supplies abdominal wall, anterior thigh & genitalia sacral in the pelvis, L4, L5 & S1 to S4

supplies remainder of butt & lower limb coccygeal, S4, S5 and C0

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