The Nervous System:
The Spinal Cord and
Spinal Nerves
Introduction
The central nervous system (CNS) consists of the spinal cord and the brain.
The spinal cord and the brain:
Have functional independence.
The spinal cord:
Is more than just a highway for information.
Integrates and processes information.
Gross Anatomy of the Spinal Cord
Gross Anatomy of the Spinal Cord:
The Meninges
Sectional Anatomy of the Spinal Cord
Spinal Nerves
Peripheral Nerves
Cevical Plexus
Muscle of neck &
Phrenic nerve - Diaphragm
Brachial Plexus
Radial nerve – Extensor muscles
Median nerve – Flexor muscles (palmaris longus)
Ulnar nerve – Flexor carpi ulnaris
Musculocutaneous nerve – Biceps brachii & Brachialis
The Brachial Plexus
The Lumbar and Sacral Plexuses
Lumbar & Sacral Plexus
Femoral nerve – Muscle of hip flexion, quadriceps and pectineus muscles
Sciatic nerve – Semitendinosus, semimembranosus and adductor magnus muscles
The Lumbar and Sacral Plexuses
Classification of Reflexes