Back Muscles Flashcards

1
Q

Trapezius (Origin/Insertion)

A
Superior Nuchal line
External Occipital protuberance
Nuchal ligament
SP C7-T12
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
Lateral 1/3 clavicle (superior)
Acromion, Spine of Scapula (medial)
Tubercle of inferior spine of scapula (inferior)
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2
Q

Trapezius (Innervation/Action)

A

Spinal Acessory n. (MOTOR)
Sensory C3-C4
__________________
elevate, depress, retract the scapula

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3
Q

Trapezius BS

A

Superficial Branch of Transverse Scapular aa (branch of Subclavian aa)

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4
Q

Latissimus Dorsi (O and I)

A
SP T7-L5
Lower 3 or 4 ribs
Thoracolumbar fascia
Iliac Crest
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
Humerus medial lip bicipital groove
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5
Q

Latissimus Dorsi (Innervation/Action)

A

Thoracodorsal n. (C6-C8) / extend, adducts, medially rotates humerus

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6
Q

Latissimus Dorsi BS

A

Thoracodorsal aa of subscapular aa

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7
Q

Levator Scapulae (O and I)

A

TP C1-C4 / Superior angle of Scapula (medial border)

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8
Q

Levator Scapulae (Innervation/Action)

A
Dorsal Scapular (C5)
Cervical nerves (C3,C4)
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
Elevates scapula (lift load)
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9
Q

Levator Scapulae BS

A

Dorsal Scapular aa

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10
Q

Rhomboid Major/Minor (O and I)

A

Major: Nuchal lig., SP T2-T5
Minor: Nuchal lig., SP C7-T1
_______________________
Medial border of scapula, inferior to spine

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11
Q

Rhomboid Major/ Minor (Innervation/Action)

A

Dorsal Scapular n (C4-C5)/ Stabilize, Retract, Elevate, & Internally Rotate Scapula

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12
Q

Rhomboid Major/Minor BS

A

Dorsal Scapular aa

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13
Q

Serratus Posterior Superior (O and I)

A

Ligament Nuchae
SP C7-T3
_______________
External surface of 2nd to 5th ribs

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14
Q

Serratus Posterior Superior (Innervation/Action)

A

Anterior rami of 2nd to 5th thoracic nerves
__________________________________
Elevate ribs (inspiration)

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15
Q

Serratus Posterior Superior BS

A

Dorsal branches of upper intercostal aa

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16
Q

Serratus Posterior Inferior (O and I)

A

SP T11-L2
_______________
Inferior borders of last 4 ribs (9-12)

17
Q

Serratus Posterior Inferior (Innervation/Action)

A

Anterior rami of 9th -12th thoracic nerves
_______________________________
Depress ribs (expiratory)

18
Q

Serratus Posterior Inferior BS

A

Dorsal branches of lower intercostal aa