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Anatomy - BAM > Final: Lecture 14 > Flashcards

Final: Lecture 14 Flashcards

0
Q

Intrinsic muscles of the back…

A
  • support upright posture and allow movements of the vertebral column
  • involved in proprioception and are innervated by the dorsal rami of spinal nerves
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1
Q

Extrinsic muscles of the back…

A
  • move the limbs

* Innervated by CN1 (accessory nerve) or branches of brachial plexus

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2
Q

Serratus posterior superior

A
  • Proximal: nuchal ligament, spinous processes of C7-T3 vertebrae
  • Distal: superior border of ribs 2-4
  • Innervation: T2-T5 intercostal nerves (ventral rami)
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3
Q

Serratus Posterior Inferior

A
  • PA: spinous processes of T11-L2
  • DA: inferior borders of ribs 8-12, near their angles
  • Actions: depress ribs
  • Innervation: intercostal nerves and subcostal nerve (ventral rami)
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4
Q

Name the two extrinsic muscles of the back.

A

•serratus posterior superior and inferior

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5
Q

Splenius Cervicis

A
  • Origin: nuchal ligament (ligamentum nuchae) and spinous processes of T1-T6
  • Insertions: tubercles of transverse processes of C1-C4
  • Actions: bilaterally- extend head and neck, Unilaterally-laterally flex neck and rotate head to side of contracting muscles
  • Innervation: dorsal rami of spinal nerves
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6
Q

Splenius Capitis

A
  • Origin: nuchal ligament and spinous processes of T1-T6
  • Insertions: lateral parts of mastoid processes and superior nuchal line
  • Actions: Bilaterally-extend head and neck, Unilaterally-laterally flex neck and rotate head to side of contracting muscle
  • Innervation: dorsal rami of spinal nerves
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7
Q

Superficial layer of Erector spinae group

A
  • Iliocostalis, longissimus, and spinalis
  • Actions: bilaterally-extend vertebral column and head, Unilaterally-laterally flex vertebral column
  • Innervation: dorsal rami of spinal nerves
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8
Q

Iliocostalis (most lateral portion)

A
  • Lumborum, thoracis, and cervicis
  • Orgin: broad common tendon attaches to iliac crest, posterior part of sacrum, sacroiliac ligaments, sacral and inferior lumbar spinous processes, and supraspinous ligament
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9
Q

Longissimus Thoracis

A
  • Orgin: same as iliocostalis

* Insertion: ribs and adjacent transverse processes of thoracic vertebrae

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10
Q

Longissimus Cervicis

A
  • Origin: transverse process of cervical vertebrae

* Insertion: transverse processes of cervical vertebrae

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11
Q

Longissimus Capitis

A
  • Origin: transverse processes of cervical vertebrae

* Insertion: mastoid processes

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12
Q

Spinalis

A
  • Thoracis: orgain on spinous processes and insert on spinous processes superior to them
  • Cervicis and Capitis
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13
Q

Transversospinalis Group

A
  • Semispinalis, Rotatores, Multifidus
  • Posture muscles
  • Innervation: dorsal rami of spinal nerves
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14
Q

Semispinalis Cervicis

A
  • cervical transverse processes to spinous processes of 2nd cervical vertebra
  • extend head, thoracic and cervical regions, rotates them contralaterally
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15
Q

Semispinalis Capitis

A
  • superfical to cervicis
  • transverse processes of 1-6 thoracic vertebrae to nuchal line
  • extend head, thoracic, and cervical regions, rotates them contralaterally
16
Q

Semispinalis Thoracis

A
  • Transverse to spinous processes in thoracic region

* extend head, thoracic and cervical regions, rotates them contralaterally

17
Q

Multifidus

A
  • cover lamina and span vertebral segments from sacrum all the way to 2nd cervical
  • originate on transverse processes and insert on spinous
  • easiest to see in lumbar region
  • Actions: stabilizes vertebrae during localized movements of vertebral column
18
Q

Rotatores Brevis

A
  • transverse process of one vertebra to base of spinous process of next vertebra above (spans one intervertebral joint)
  • Action: extend head, thoracic and cervical regions, rotates them contralaterally
19
Q

Rotatores Longus

A
  • transverse process of one vertebra to spinous process of 2nd vertebra above (spans 2 intervertebral joints)
  • Actions: extend head, thoracic and cervical regions, rotates them cotnralaterally
20
Q

Interspinales

A

•Innervation: dorsal rami of spinal nerves

21
Q

Intertransversari

A

• Innervation: dorsal and ventral rami of spinal nerves!!!!

22
Q

Levator Costarum

A

•Innervations: ventral and dorsal rami of C8-T11 s. nerves

23
Q

Suboccipital Triangels bones

A

•Atlas (C1) and Axis (C2)

24
Q

Suboccipital Region Muscles

A
  • Rectus capitis posterior major and minor, obliquus capitis superior and inferior
  • mainly posterior muscles, aid in extension and rotation at atlantoaxial joint
  • All are innervated by suboccipital nerves (dorsal rami of C1)
25
Q

Occipital Neuralgia

A
  • Caused by irritation of greater occipital (dorsal rami C2) and lesser occipital nerves (ventral rami C2)
  • Symptoms include neck pain that spreads radiates upward and around the sides of the head, following the C2 dermatome

Anatomy - BAM (10 decks)

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