CH 12: Spinal Cord (Final Exam) Flashcards
Where is the Spinal Cord Located?
- In Vertebral FORAMEN
Where does the Spinal Cord Begin and End?
Begin: FORAMEN Magnum of Occipital bone
End: Conus Medullaris
Where does CSF collect within the Spinal Cord (SC) ?
Below L3
The Cauda Equina is only for what roots?
Lumbar & Sacral
What structure of the SC is a bundle of spinal nerve roots from the Conus Medullaris?
Cauda Equina
The Cauda Equina is considered as ______ tissue?
- Nerve
The Filum Terminale is considered as ____ Tissue?
Connective
What structure of the SC has the Pia mater extending to the coccyx & anchors the SC?
Filum Terminale
What are the 3 Meninges of the Brain and SC?
- Dura Mater, Arachnoid Mater, & Pia Mater
The Pia Mater is Homologus to ___?
Visceral layer
Dura Mater is Homologous to ____?
Parietal Layer
What are the structures of the SC?
- Brian & SC meninges, Epidural Space, Cerebral Spinal Fluid
What are the Brain & SC Meninges listed from Outside to inside
- Dura Mater, Arachnoid Mater, Pia Mater
Where can CSF be found in the SC?
- Subarachnoid space
What structure of the SC is between the Vertebrae & Spinal Dura Mater & Considered as a cusion of fat?
Epidural Space
What space of the SC is used for Epidural Anesthesia?
- Epidural Space
What penetrates the dura mater & arachnoid mater?
CSF
What surrounds the Brain and SC?
CSF
Grey Matter of the SC is ?
On the inside
White Matter of the SC is on the ?
Outside
What matter of the SC resembles a Butterfly or the letter H?
Gray Matter
What does the Dorsal Horn contain?
interneurons
What is the function of the Dorsal Horn?
Receives sensory input from sensory Neuron
What Horn contains Motor Neurons?
Ventral Horn
What is the function of Motor Neurons ?
-to exit the SC
Both Dorsal and Ventral horns are within ___?
Grey Matter
Where are the Dorsal and Ventral Root located?
Within Vertebral Foramen
What root contain Sensory Fibers/ Neurons?
Dorsal Root
What Root of the SC contain Somatic & Autonomic Neurons ( Motor Fiber) ?
Ventral Roots
What is the function of the Dorsal Root?
Input to SC
What root gives output to the Peripheral Body?
Ventral Root
Each Spinal Nerve connects to spinal cord Via ______?
Ventral & Dorsal Nerve Roots
Both Ventral & Dorsal Nerve Roots?
Untie; forming spinal nerves and intervertebral foramina
What is the function of Gray Commissure?
- Encloses Central Canal by 4th ventricle
- Connects Masses of Gray Matter
Can a vegetative patient perform stretch reflex?
Yes; only spinal cord is required ( not brain)
What reflex requires Grey Matter ONLY?
Stretch Reflex
What matter innervates skeletal muscles by SOMATIC NERVES
- Gray Matter
What matter innervates SMOOTH & CARDIAC muscles by AUTONOMIC NERVEs?
Gray Matter
What Matter receives sensory information from peripheral ( mainly in trunk region)?
Gray Matter
What is the the function of White matter ?
Communicates to brain by Nerve Tracts allowing communication between Brain and SC
What matter is required for Plantar Reflex?
- Grey matter
- Mostly White Matter!!
What is the direction of the Ascending sensory Tract & what side of the SC is it on?
- Up; Dorsal Side
The Descending Motor Tract goes ____ and is on the _______ side of the SC?
- Down ; Ventral Side
