Week 5- Spinal cord, spinal nerves Flashcards

1
Q

Label the parts of the vertebrae

And list the roles of the different parts

A

Vertebral body: Weight bearing part

Vertebral Arch —>

Vertebral foreamina: Forms Vertebral Canal when all vertebrae together. Contains and protects spinal cord

Pedicle: Joins vertebral body to arch

Lamina: Bone that extends from pedicle and joins at midline forming

vertebral arch roof

Spinous Process: Entends posteroinferiorly from lamina. Point of attachment for muscle and ligaments

Transverse Process: Entends posterolaterally. Point of articulation for ribs in thoracic region

Articular Facets- Inferior & superior: Articulate with the respective inferior and superior articular processes of vertebrae above and below forming facet joints

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2
Q

What does the change in the vertebral foramen reflect?

A

Amount of nueral tissue

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3
Q

Which region is this vertebrae from?

Label the parts

Discuss the Features

A

Cervical

Body: Short and square. Concave surface superiorly & convex shape inferiorly.

Transverse Processes: Foramen Transversarium

Spinous Process: Bifid

Vertebral Foramen: Triangular

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4
Q

Which region is this vertebrae from?

Label the parts

Discuss the Features

A

Thoracic

Vertebral Body: Demifacets (inferior & superior) for articulation with rib head

Transverse Process: Facets for articulation with rib tubercle

Spinous Process gets longer

Vertebral body gets smaller

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5
Q

Which region is this vertebrae from?

Label the parts

Discuss the Features

A

Lumbar

Body: Cylindrical

Vertebral Foramen: Triangular shape

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6
Q

Which region is this vertebrae from?

Label the parts

Discuss the Features

A

Sacral

Fused Sacral vertebrae

Posterior and Anterior surface: 4 pairs of forarmia to allow passage of S1-S4

L Shape facets on lateral surface for articulation with pelvic bone

Traingular shape: apex points inferiority

Concave anteriorly

Convex posteriorly

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7
Q

Cervical spinal nerves exit ____ their correspondingly numbered vertebrae

A

Cervical spinal nerves exit above their correspondingly numbered vertebrae

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8
Q

What do spinal nerves exit through?

What are the boarders of the exit points?

What happens if the boarders of the exit points have pathology?

A

Intervertebral Foramen spinal nerve exit

If pathology affecting the below can compress the nerve

Anterior: IV Disc

Posterior: Articular Processes of Vertebral arch & their associated joint

Inferiorly & Superiorly: Adjacent p**edicle notches

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9
Q

What type of nerves do spinal nerves contain?

A

Mixed!

Somatic sensory & motor

Visceral sensory

Autonomic nerves (motor) T1-L2 & S2-S4

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