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Anatomy > O & I Superfical Back > Flashcards

O & I Superfical Back Flashcards

1
Q

Origin: Rhomboid Major

A

Spinous Process of T2-T5 vertebrae

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2
Q

Insertion: Rhomboid Major

A

Medial border of the scapula from the level of spine to inferior angle

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3
Q

Innervation: Rhomboid Major

A

Dorsal Scapular Nerve (C4, C5)

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4
Q

Actions: Rhomboid Major

A

Retracts scapula & rotates its glenoid cavity inferiorly & fixes scapula to thoracic wall

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5
Q

Origin: Rhomboid Minor

A

Nuchal ligament & Spinous processes of C7 and T1 Vertebrae

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6
Q

Insertion: Rhomboid Minor

A

Smooth triangular area at the medial end of scapular spine

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7
Q

Innervation: Rhomboid Minor

A

Dorsal Scapular Nerve (C4, C5)

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8
Q

Actions: Rhomboid Minor

A

Retracts scapula & Rotates its glenoid cavity inferiorly, & fixes scapula to thoracic wall

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9
Q

Origin: Latissimus Dorsi

A

Thoracolumbar fascia of the inferior 6 thoracic, all lumbar, and sacral spinous processes, outer lip of iliac crest, and inferior 3-4 ribs

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10
Q

Insertion: Latissimus Dorsi

A

Floor of bicipital groove (intertuberculuar sulcus) on the humerus
**may sometimes attach to inferior angle of scapula

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11
Q

Innervation: Latissimus Dorsi

A

Thoracodorsal nerve (C6, C7, C8) from the posterior cord of the brachial plexus

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12
Q

Actions: Latissimus Dorsi

A

Extends, medially (internally) rotates, and adducts the humerus. Raises body towards arms during climbing.

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13
Q

Origin: Trapezius

A

Medial 1/3 of superior nuchal line, external occipital protuberance, nuchal ligament, & spinous processes of C7-T12

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14
Q

Insertion: Trapezius

A

Lateral 1/3 of clavicle, acromion process, & spine of scapula

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15
Q

Innervation: Trapezius

A

Spinal Accessory Nerve (CN XI: motor) & C3 and C4 (pain and proprioception)

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16
Q

Action: Trapezius

A

Superior (descending fibers): elevate scapula/shoulders maintaining level of shoulders against gravity or resistance

Middle fibers: retract scapula

Inferior fibers (ascending fibers): depress scapula/shoulders

Superior & Inferior fibers together: rotate the glenoid cavity of the scapulae superiorly; with shoulders fixed, bilateral contraction extends the neck; unilateral contraction produces lateral flexion to the same side

17
Q

Origin: Levator Scapula

A

Posterior tubercles of transverse processes of C1-C4 vertebrae

18
Q

Insertion: Levator Scapula

A

Medial border of scapula superior to the root of the scapular spine

19
Q

Innervation: Levator scapula

A

Dorsal scapular nerve (C4, C5) & Cervical (C3, C4) nerves

20
Q

Action: Levator Scapula

A

Elevates scapula & rotates its glenoid cavity inferiorly by rotating scapula

Anatomy (25 decks)

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