Lecture 1: Neuropathy Flashcards
Brain
Encephalopathy
Spinal Cord
myelopathy
Peripheral nerves
Mononeuropathy : Single nerve
Polyneuropathy : Group of nerves
A spinal nerve consists of?
- roots
- main trunk
- 4 primary branches
- peripheral branches
Roots
- located in the vertebral canal
- are associated with spinal cord though they belong to the peripheral nervous system
Dorsal roots are (sensory/motor) while ventral roots are (sensory/motor)
Dorsal : Sensory-afferent
Ventral: Motor- efferent
Main trunk is located?
intervertebral foramen
Spinal nerve formula is determined by?
total number of vertebrae plus 1
Four primary branches of spinal nerve are?
- Dorsal Primary
- Ventral Primary
- Meningeal
- Communicating
Dorsal Primary Branch
Supplies dorsal axial muscles and skin over the dorsal and dorsolateral body areas
Ventral Primary Branch ***
- Largest primary branch
- Supplies ventral axial (hypaxial muscles), muscles of ventral and ventrolateral regions including thoracic and pelvic limbs including skin over these regions
- ventral branches of lower cervical and thoracic region form the brachial plexus
- ventral branches L4-S4 form the lumbrosacral plexus
Meingeal
supplies the coverings of the spinal cord, blood vessels in the vertebral canal and intervertebral discs
Communicating branch**
Runs from the main trunk of spinal nerve to the sympathetic trunk & chain ganglia
Associated with visceral function
Somatic nerve
associated with the body wall (skin, skeletal muscle, joints, tendons)
Visceral
internal organs, smooth muscle, cardiac muscle, and glands
