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Gross Anatomy > Superficial Back Muscles > Flashcards

Superficial Back Muscles Flashcards

Learn origin, insertion, innervation, blood supply, action

1
Q

Latissimus Dorsi(Action)

A

Internal rotation, adduction, and extension of the humerus.

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2
Q

Latissimus Dorsi(innervation)

A

Thoracodorsal nerve

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3
Q

Rhomboid Minor (action)

A

Retraction of the scapular, slight downward rotation and elevation.

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4
Q

Levator Scapulae (Innervation)

A

Upper cervical nerve, dorsal scapular nerve

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5
Q

Latissimus Dorsi (Blood Supply)

A

Thoracodorsal artery

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6
Q

Latissimus Dorsi (Insertion)

A

Intertubercular groove of the humerus

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7
Q

Latissimus Dorsi (Origin)

A

Spinous processes of T7-L5, illiac crest, lower 4 ribs, thoracolumbar fascia.

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8
Q

Trapezius (Insertion)

A

(EOP-C4) lateral aspect of clavicle
(C5-T4)- acromion
(T5-T12)- spine of spacula

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9
Q

Trapezius (Innervation)

A

CN11 accessory nerve

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10
Q

Levator Scapulae (blood supply)

A

Upper cervical vessel

Dorsal scapular artery

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11
Q

Trapezius (blood supply)

A

Transverse cervical artery

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12
Q

Rhomboid Minor (blood supply)

A

Dorsal scapular artery

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13
Q

Rhomboid Minor (innervation)

A

Dorsal Scapular nerve

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14
Q

Trapezius (origin)

A

EOP (external occipital protuberance)
Superior nuchal line
Nuchal ligament
Spinous processes and supraspinatus ligaments of C7-T12

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15
Q

Levator Scapulae (action)

A

Elevates the scapula

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16
Q

Rhomboid Minor (insertion)

A

Medial edge of scapula at level of spine of scapula

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17
Q

Rhomboid Minor (Origin)

A

SP of C7-T1

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18
Q

Trapezius (actions)

A

Upper- Shoulder elevation
Middle-aged Shoulder elevation, upward scapular rotation, scapular retraction
Lower- Shoulder and scapular depression, upward scapular rotation
ALL three contract to perform scapular retraction

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19
Q

Serratus Anterior (action)

A

Protraction of scapula

Upward rotation of scapula

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20
Q

Serratus Anterior (origin)

A

Anterior ribs #1-9

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21
Q

Serratus Anterior (Insertion)

A

Medial edge of the ventral surface of the scapula, inferior angle of the scapula

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22
Q

Serratus Anterior (Blood supply)

A

Lateral thoracic artery

23
Q

Serratus Anterior (Innervation)

A

Long thoracic nerve

24
Q

Levator Scapulae (insertion)

A

Superior angle of scapula, near medial border

25
Q

Levator Scapulae (origin)

A

Transverse Processes of C1-C4

26
Q

Rhomboid Major (Insertion)

A

Medial edge of scapula- inferior to the rhomboid Minor

27
Q

Rhomboid Major (origin)

A

Spinous processes of T2-T5

28
Q

Rhomboid Major (Innervation)

A

Dorsal scapular nerve

29
Q

Rhomboid Major (blood supply)

A

Dorsal scapular artery

30
Q

Rhomboid Major (action)

A

Retraction of scapula

Slight downward rotation and elevation

31
Q

Deep Back Muscles 3 groups

A

Splenius
Erector Spinae
Transverso-Spinalis

32
Q

Originate on spinous processes and run laterally up?

33
Q

Run parallel to midline

A

Erector Spinae

34
Q

Runs from transverse process to spinous process?

A

Transverso-spinalis

35
Q

2 “bandage” muscles; deep in Trapezius, but most superficial of deep muscles and located in the neck and upper thorax

36
Q

The 2 muscles of the splenius are?

A

Capitis

Cervicis

37
Q

Broad, flat muscle; produces rotation in direction of contracted muscle?

38
Q

Origin of the splenius Capitis

A

Spinous Process of C7-T3

39
Q

Insertion of the splenius Capitis

A

Mastoid Process

Superior Nuchal Line (lateral part)

40
Q

Nerve of the splenius Capitis

A

Dorsal Primary Rami

41
Q

Action of splenius Capitis

A

Bilaterally-Extension of the head and neck

Unilaterally-Rotation of the same side

42
Q

Narrow muscle that wraps around splenius Capitis portion

43
Q

Origin of thesplenius Cervicis

A

Spinous process of T5-T7

44
Q

Insertion of the splenius Cervicis

A

Transverse Process of C1-C4

45
Q

Nerve for splenius Cervicis

A

Dorsal Primary Rami

46
Q

3 columns of muscles, long group of muscles seen in bundles on each side of the spine?

A

Erector Spinae

47
Q

Origin of the Erector Spinae?

A

Spinous process of T11-S3
Iliac Crest
Surface of Sacrum

48
Q

Action of Erector Spinae

A

Ext. of vertebral column (bilaterally)

Lateral flexion to the same side of contraction (unilaterally)

49
Q

Three columns of the Erector Spinae?

A

Iliicoatalis
Longissimus
Spinalis

I LOVE SPAGHETTI

50
Q

Most lateral of the erector Spinae and contains 3 parts?

A

Iliocostalis

51
Q

3 parts of the iliocostalis

A

Lumborum
Thoracic
Cervicis

52
Q

Origin of the Ilicostalis lumborum (erector Spinae)

A

Iliac Crest

53
Q

Insertion of the iliostalis Lumborum (erector Spinae)

A

Lower 6 ribs

Gross Anatomy (34 decks)

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