Review Deep Back Flashcards

1
Q

nerves supply the epaxial division muscles

A

dorsal primary rami of spinal nerves

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2
Q

nerves supply the hypaxial division muscles

A

ventral primary rami of spinal nerve

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3
Q

“say hi on the front, but the back is saying eep!”

A

hypaxial is ventral

epaxial is dorsal

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4
Q

muscles derived from epaxial division

A

deep extensor muscles of back

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5
Q

muscles of hypaxial division

A

infrahyoid
flexors of vertebral column
quadratus lumborum

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6
Q

what are the only muscles of the body supplied by the dorsal primary rami of spinal nerve

A

intrinsic back muscles

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7
Q

chief extensor of the vertebral column

A

erector spinae group

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8
Q

where are interspinalis and intertransversaii muscles lacking?

A

thoracic region

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9
Q

what muscles form the suboccipital triangle

A

oblique capitis inferior
oblique capitis superior
recturs capitis posterior major
**NOT MINOR

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10
Q

what structures are found within the suboccipital triangle

A
  • vertebral artery
  • subocciptial n. (dorsal ramus of C1)
  • greater occipital n. (dorsal ramus of C2)
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11
Q

what n. supplies the muscles of the suboccipital triangle

A

suboccipital n.

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12
Q

what is the only back muscle that doesn’t produce extension

A

intertransversarii

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13
Q

what muscles extend and rotate head to the same side?

A

splenius

erector spinae

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14
Q

what muscles extends and rotate head to opposite side

A

multifidus
rotatores
semispinalis

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