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Gross 1 > Exam 2 Shoulder muscles > Flashcards

Exam 2 Shoulder muscles Flashcards

1
Q

Muscles that originate on the vertebral column or skull

A
  1. Trapezius
  2. Rhomboid Major
  3. Rhomboid Minor
  4. Levator Scapula
  5. Latissimus Dorsi
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2
Q

Origin of the trapezius

A
  • External Occipital Protuberence (EOP)
  • Superior Nuchal Line
  • Ligamentous nuchae
  • Spines of the thoracic vertebrae
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3
Q

Insertion of the trapezius

A

Clavicle

acromion process

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4
Q

Actions of the trapezius

A
  1. stabilizes the scapula (holds it in normal anatomical position)
  2. Upper portion: elevates the scapula
  3. Middle & lower portions: adducts the scapula
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5
Q

Nerve supply of the trapezius

A
  • Motor innervation from the spinal accessory nerve (XI cranial)
  • Sensory innervation from C4 & C5
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6
Q

Origin of the Rhomboid Major

A

Spine/ upper thoracic vertebrae

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7
Q

Insertion of the Rhomboid Major

A

Vertebral border of the scapula

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8
Q

Origin of the Rhomboid Minor

A

Spines/ Lower thoracic & 1st thoracic vertebrae

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9
Q

Insertion of the Rhomboid Minor

A

Vertebral border/ scapula

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10
Q

Origin of the levator scapula

A

transverse process/ upper cervical vertebrae

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11
Q

Insertion of the levator scapula

A

Superior angle / scapula

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12
Q

Actions of Rhomboid Major, minor & levator scapula

A
  1. Elevates the scapula
  2. Adducts the scapula
  3. stabilizes the scapula
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13
Q

Nerve supply of the Rhomboid major, minor & levator scapula

A

Dorsal scapular nerve (C5)

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14
Q

Origins of the latissimus dorsi

A
  • Spines/ lower thoracic & lumbar vertebrae
  • thoracodorsal fasica
  • Crest of ilium
  • Lower ribs
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15
Q

Insertion of the latissimus dorsi

A

Intertubercular groove (lesser tubercle)/ humerus

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16
Q

Actions of latimmimus dorsi

A
  1. Extends, adducts & medially rotates the humerus

2. Involved w/ forced expiration

17
Q

Nerve supply of the latissimus dorsi

A

thoracodaorsal (C6, C7 & C8)

Gross 1 (29 decks)

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