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Gross Anatomy > ANOIA Back/Spine/Thorax > Flashcards

ANOIA Back/Spine/Thorax Flashcards

1
Q

Origin of trapezius

A

external occipital protuberance, medial portion of superior nuchal line of occiput, ligamentum nuchae, spinous process C7-T12

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2
Q

Insertion of trapezius

A

lateral 1/3 of clavicle, acromion, spine of scapula

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3
Q

Action of upper fibers trapezius

A

Bilaterally: extend head and neck
Unilaterally: lateral flexion of head to same side, rotate head opposite side, elevate scapula, upward rotation of scapula (S/T joint)

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4
Q

Action of middle fibers trapezius

A

adduct scapula (S/T joint), stabilize scapula (S/T joint)

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5
Q

Action of lower fibers trapezius

A

depress scapula (S/T joint), Upwardly rotate scapula (S/T joint)

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6
Q

Nerve innervation trapezius

A

Spinal portion of crainial nerve XI (accessory) and ventral ramus C2,3,4

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7
Q

Origin Rhomboid major

A

spinous process T2-T5

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8
Q

Insertion Rhomboid major

A

medial border of scapula between spine and inferior angle

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9
Q

Action rhomboid major

A

adduct scapula (scapulothoracic joint), elevate scapula (S/T joint), downwardly rotate scapula (S/T joint)

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10
Q

Nerve innervation rhomboid major

A

dorsal scapular C4, 5

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11
Q

origin levator scapula

A

transverse processes of C1-C4

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12
Q

Insertion levator scapula

A

medial border of scapula between superior angle and superior portion of spine of scapula

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13
Q

action levator scapula

A

Unilaterally: elevate scapula (scapulothoracic joint), downwardly rotate scapula (S/T joint), Laterally flex head and neck, rotate head and neck to same side
Bilaterally: Extend head and neck

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14
Q

nerve innervation levator scapula

A

cervical 3, 4 and dorsal scapular C4, 5

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15
Q

Origin longissimus

A

common tendon (thoracis), transverse processes of upper 5 thoracic vertebrae (cervicis and capitis)

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16
Q

Insertion longissimus

A

Lower 9 ribs and transverse procsses of thoracic vertebrae (thoracis), transverse processes of cervical vertebrae (cervicis), mastoid process of temporal bone (capitis)

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17
Q

Action longissimus

A

Unilaterally: laterally flex vertebral column to same side
Bilaterally: extend vertebral column

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18
Q

nerve innervation longissimus

A

spinal

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19
Q

origin multifidi

A

sacrum and transverse processes of lumbar through cervical vertebrae

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20
Q

insertion multifidi

A

spinous processes of lumbar vertebrae through C2 (span 2 or 4 vertebrae)

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21
Q

action multifidi

A

Unilaterally: rotate vertebral column to opposite side
Bilaterally: extend vertebral column

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22
Q

nerve innervation multifidi

A

spinal

23
Q

origin semispinalis capitis

A

transverse processes of C4-T5

24
Q

insertion semispinalis capitis

A

between superior and inferior nuchal lines of occiput

25
Q

nerve innervation semispinalis capitis

A

cervical

26
Q

action semispinalis capitis

A

extend vertebral column and head

27
Q

origin splenius cervicis

A

spinous processes of T3-T6

28
Q

insertion splenius cervicis

A

transverse processes of C1-C3

29
Q

action splenius cervicis

A

Unilaterally: rotate head and neck at the same time, laterally flex head and neck to same side
Bilaterally: extend head and neck

30
Q

nerve innervation splenius cervics

A

cervical

31
Q

origin quadratus lumborum

A

posterior iliac crest

32
Q

insertion quadratus lumborum

A

last rib and transverse processes of L1-L4

33
Q

action quadratus lumborum

A

Unilaterally: laterally tilt (elevate) pelvis, laterally flex vertebral column to same side
Bilaterally: fix last rib during forced inhalation, assist to extend vertebral column

34
Q

nerve innervation quadratus lumborum

A

lumbar plexus T12, L1, 2, 3

35
Q

origin intercostals

A

inferior border of the rib above

36
Q

insertion intercostals

A

superior border of the rib above

37
Q

action intercostals

A

External: draw ribs superiorly to assist in inhalation
Internal: draw ribs inferiorly to assist with exhalation

38
Q

nerve innervation intercostals

A

thoracic

39
Q

origin serratus posterior superior

A

spinous processes C7-T1

40
Q

insertion serratus posterior superior

A

posterior surface of ribs 2-5

41
Q

action serratus posterior superior

A

elevate ribs during inhalation

42
Q

nerve innervation serratus posterior superior

A

T 1, 2, 3, 4

43
Q

origin interspinalis

A

cervical: spanning the spinous processes of C2-T3
lumbar: spanning the spinous processes of T12-L5

44
Q

insertion interspinalis

A

cervical: spanning the spinous processes of C2-T3
lumbar: spanning the spinous processes of T12-L5

45
Q

nerve innervation interspinalis

A

spinal

46
Q

action interspinalis

A

extend vertebral column

47
Q

origin external oblique

A

external surfaces of ribs 5-12

48
Q

insertion external oblique

A

anterior part of the iliac crest, rectus sheath to linea alba

49
Q

action external oblique

A

Unilaterally: flaterally flex vertebral column to same side, rotate vertebral column to opposite side
Bilaterally: flex vertebral column, compress abdominal contents

50
Q

nerve innervation external oblique

A

(T5-6), T7-11, T12

51
Q

Origin Transverse abdominis

A

lateral inguinal ligament, iliac crest, thoracolumbar fascia and internal surface of lower 6 ribs

52
Q

insertion transverse abdominis

A

rectus sheath to linea alba

53
Q

action transverse abdominis

A

compress abdominal contents

54
Q

nerve innervation transverse abdominis

A

T7-12, L1, iliohyogastric and ilioinguinal, ventral divisions

Gross Anatomy (3 decks)

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