Spinal Cord and Tracts

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CNS tissue enclosed within the vertebral column from the foramen magnum to ___ ?

L1
What is Conus medullaris ?

terminal portion of the spinal cord
What is the Filum terminale ?

fibrous extension of the piamater; anchors the spinal cord to the coccyx
What are Denticulate ligaments ?

Delicate shelves of piamater; attach the spinal cord to the vertebrae
What is the epidural space ?

space between the vertebrae and the dural sheath (dura mater) filled with fat and a network of veins
Label the Diagram ?
What are the Cervical and lumbar enlargements ?

What are the Cauda equina ?

-sites where nerves serving the upper and lower limbs emerge

-collection of nerve roots at the inferior end of the vertebral canal
Label the Diagram ?
What is the Anterior median fissure ?

What is the Posterior median sulcus ?

-separates anterior funiculi

-divides posterior funiculi
What does the Gray matter consists of ?

What is the Gray commissure ?

-soma, unmyelinated processes, and neuroglia

– connects masses of gray matter; encloses central canal
What type of fibers do the Lateral horns have ?

sympathetic nerve fibers
Label the diagram ?
Label the diagram ?
What is somatotopy ?

(precise spatial relationships)
Where do the the nonspecific and specific ascending pathways send impulses to ?

What are these pathways are responsible for ?

Where do the the spinocerebellar tracts send impulses to ?

-Sensory Cortex

-Discriminative touch and conscious proprioception

-Cerebellum and do not contribute to sensory perception
What type of impulses do descending tracts deliver ____ (efferent or afferent ) impulses from the brain to the spinal cord, and are divided into two groups . What are they ?

efferent

-Direct pathways equivalent to the pyramidal tracts

-Indirect pathways, essentially all others Motor pathways involve two neurons (upper and lower)

Author

glparker86

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Card Set

Spinal Cord and Tracts

Description

Neuroanatomy

Updated

2014-02-17T18:14:00Z