Lecture 3 - Spinal Cord and Peripheral Nervous System Flashcards
Label the missing parts of the spinal cord
Where do nerves and blood flow move through the spinal cord?
Intervertebral Foramen
Label the missing parts
How many spinal nerve pairs do we have
31
How many spinal nerve pairs are cervical
8
How many spinal nerve pairs are thoracic
12
How many spinal nerve pairs are Lumbar
5
How many spinal nerve pairs are sacral
5
How many spinal nerve pairs are found in coccyx
1
T or F: Cervical nerves exit above the corresponding vertebra
T
Explain why there are 8 cervical nerves
Because C8 leaves above T1
Label the 3 meninges
Meninges
3 connective tissue membranes that protect the CNS and blood vessels
Name the 3 meninges
- Pia Mater
- Arachnoid Mater
- Dura Mater
What are the 3 meningeal spaces between each layer
- Epidural Space
- Subdural Space
- Subarachnoid Space
Epidural Space is found where
Above dura mater
Where is the subdural space found
Below the dura mater
Where is the subarachnoid space found
Below the arachnoid
What meningeal space does a lumbar puncture take place?
Subarachnoid Space
What meningeal space is an epidural provided
Epidural Space
Where is CSF fluid found
Subarachnoid space
Function of the CSF
Cushion for CNS and nourishes the brain and spinal cord
What is the function of the denticulate ligament
Supports the spinal cord and holds pia mater in place
Name all the divisions of the PNS
Name all the missing parts of the spinal cord
White Matter is [myelinated /unmyelinated]
Myelinated
Grey matter is [myelinated/unmyelinated]
unmyelinated
Ventral is [sensory/motor]
motor
Dorsal is [sensory/motor]
sensory
Voluntary Muscle innervation pathway…
1) Ventral horn of spinal cord
2) ventral root
3) spinal nerve
4) ventral or dorsal ramus
5) muscle
Sensory innervation pathway…
- Sensory receptor
- Ventral or dorsal ramus
- Spinal nerve
- Dorsal root ganglion
- Dorsal root
- Dorsal horn of spinal cord
Name what happens at each impairment
1) Spinal nerve -> loss of sensory and motor information
2) Dorsal root -> loss of sensory information
3) Ventral horn of spinal cord -> Loss of motor information
Dorsal ramus because they are only having motor problems with dorsal and not ventral areas of body Ventral refers to front of body and dorsal refers to back of body
