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Gross Anatomy Exam 1 > Back Muscles > Flashcards

Back Muscles Flashcards

0
Q

Insertion of Trapezius

A

Lateral third of Clavicle
Acromion
Spine of Scapula

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1
Q

Origin of Trapezius

A

Medial third of Superior Nuchal Line
EOP
Nuchal Ligament
Spinous processes of C7 to T12

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2
Q

Innervation of Trapezius

A

CN XI- spinal accessory nerve- motor

C3, C4 -sensory

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3
Q

Actions of Trapezius

A

Elevates/Depresses/Retracts Scapula

Rotates Glenoid cavity

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4
Q

Origin of Latissimus Dorsi

A

Spinous processes of T7 to T12
Thoracolumbar Fascia
Iliac Crest
Inferior 3 or 4 ribs

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5
Q

Insertion of Lat

A

Floor of interubercular sulcus (groove) of Humerus

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6
Q

Innervation of Lat

A

Thoracodorsal nerve

C6, C7, C8 -segmental

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7
Q

Actions of Lat

A

Extend/ adducts/ medially rotates shoulder joint

Raises body towards arms when climbing

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8
Q

Origin of Levator Scapulae

A

Posterior Tubercle of transverse processes of C1 to C4

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9
Q

Insertion of Levator Scapulae

A

Medial border of Scapula superior to root of spine

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10
Q

Innervation of Levator Scapulae

A

Dorsal Scapular C5

Cervical C3 and C4 spinal nerves

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11
Q

Actions of Levator Scapulae

A

Elevates scapula and tilts the glenoid cavity inferiorly by rotating the scapula

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12
Q

Origin of Rhomboid Major

A

Spinous Process of T2 to T5

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13
Q

Insertion of Rhomboid Major

A

Medial border of Scapula from level of spine to inferior angle

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14
Q

Innervation of Rhomboid Major

A

Dorsal Scapular Nerve (C4 & C5)

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15
Q

Actions of Rhomboid Major

A

Retract and rotate Scapula- depress glenoid cavity

fix scapula to thoracic wall

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16
Q

Origin of Rhomboid Minor

A

Nuchal Ligament

Spinous processes of C7 to T1

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17
Q

Insertion of Rhomboid Minor

A

Triangular area at medial end of Scapular spine

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18
Q

Innervation of Rhomboid Minor

A

Dorsal Scapular Nerve (C4 and C5)

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19
Q

Actions of Rhomboid Minor

A

Retract and rotate Scapula- depress glenoid cavity

fix scapula to thoracic wall

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20
Q

What are the Posterior Axio-Appendicular muscles

A 
Trapezius
Latissimus Dorsi
Levator Scapulae
Rhomboid Major
Rhomboid Minor
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21
Q

Origin of Splenius Capitis

A

Nuchal Ligament

C7 to T6

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22
Q

Insertion of Splenius Capitis

A

Mastoid process of Temporal bone

Lateral third of Superior Nuchal line of Occipital bone

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23
Q

Innervation of Splenius Capitis

A

Posterior Rami of Spinal Nerves

24
Q

Actions of Splenius Capitis

A

Acting Alone- Laterally flex neck and rotate head to side of active muscles
Acting Together- Extend Head and Neck

25
Q

Origin of Splenius Cervicis

A

Nuchal Ligament

C7 to T6

26
Q

Insertion of Splenius Cervicis

A

Tubercles of transverse process of C1 to C3 or C4

27
Q

Innervation of Splenius Cervicis

A

Posterior Rami of Spinal Nerves

28
Q

Actions of Splenius Cervicis

A

Acting Alone- Laterally flex neck and rotate head to side of active muscles
Acting Together- Extend Head and Neck

29
Q

I Love Spaghetti

A

Iliocostalis
Longissimus
Spinalis

30
Q

Origin of Iliiocostalis

A

Broad Tendon from posterior part of Iliac Crest
Posterior surface of Sacrum
Sacro-iliac ligaments
Sacral and inferior lumbar spinous processes
Supraspinous Ligament

31
Q

Insertion of Iliocostalis

A

(Lumborum, thoracis, and cervicis)
Angle of Inferior Ribs and
Cervical Transverse processes

32
Q

Innervation of Iliocostalis

A

Posterior Rami of Spinal Nerves

33
Q

Actions of Iliocostalis

A

Acting Bilaterally- extend vertebral column and head

Acting Unilaterally- laterally flex vertebral column

34
Q

Origin of Longissimus

A

Broad Tendon from posterior part of Iliac Crest
Posterior surface of Sacrum
Sacro-iliac ligaments
Sacral and inferior lumbar spinous processes
Supraspinous ligament

35
Q

Insertion of Longissimus

A

(Thoracis, cervicis, capitis)
Ribs between tubercles and angles
transverse processes in thoracic and cervical regions
Mastoid process of Temporal Bone

36
Q

Innervation of Longissimus

A

Posterior Rami of Spinal Nerves

37
Q

Actions of Longissimus

A

Acting Bilaterally- extend vertebral column and head

Acting Unilaterally- laterally flex vertebral column

38
Q

Origin of Spinalis

A

Broad Tendon from posterior part of Iliac Crest
Posterior surface of Sacrum
Sacro-iliac ligaments
Sacral and inferior lumbar spinous processes
Supraspinous ligament

39
Q

Insertion of Spinalis

A

(Thoracis, cervicis, capitis)

Spinous processes in upper thoracic region and cranium

40
Q

Innervations of Spinalis

A

Posterior Rami of Spinal Nerves

41
Q

Actions of Spinalis

A

Acting Bilaterally- extend vertebral column and head

Acting Unilaterally- laterally flex vertebral column

42
Q

Some More Ragu

A

Semispinalis
Multifidus
Rotatores

43
Q

Origin of Semispinalis

A

(Thoracis, cervics, capitis)

Transverse processes C4 to T10

44
Q

Insertion of Semispinalis

A

Occipital bone
Spinous processes in upper thoracic and cervical regions
spanning 4 to 6 segments

45
Q

Innervation of Semispinalis

A

Posterior Rami of Spinal Nerves

46
Q

Actions of Semispinalis

A

Extends head and thoracic and cervical regions of vertebral column
Rotates them contra laterally

47
Q

Origin of Multifidus

A 
Posterior Sacrum
Posterior Superior Iliac spine of Ilium
Aponeurosis of Erector Spinae
Sacro-ilac ligaments
Mammillary processes of lumbar vertebrae
Transverse processes of Thoracic vertebrae
Articular processes of C4 to C7
48
Q

Insertion of Multifidis

A

Thickest in Lumbar region

Entire length of Spinous processes of vertebra located 2 to 4 segments superior to origin

49
Q

Innervation of Multifidus

A

Posterior Rami of Spinal Nerves

50
Q

Actions of Multifidis

A

Unilateral contraction rotates to contralateral side

Stabilizes vertebrae during local movements of vertebral column

51
Q

Origin of Rotatores

A

Transverse Processes of Vertebra

Best developed in the thoracic region

52
Q

Insertion of Rotatores

A

Junction of Lamina and Transverse processes or Spinous processes of Vertebra immediately (Brevis) or two segments (Longus) superior to vertebrae origin

53
Q

Innervation of Rotatores

A

Posterior Rami of Spinal Nerves

54
Q

Actions of Rotatores

A

May function as organs of proprioception
Possibly stabilize the vertebra
Assist with local extension
Rotatory movements of vertebral column

55
Q

What are the Deep Layer of Intrinsic Back Muscles?

A

Semispinales
Multifidus
Rotatores

56
Q

Superficial layer of Intrinsic Back Muscles

A

Splenius Capitis

Splenius Cervicis

57
Q

Intermediate Layer of Intrinsic Back Muscles- Erector Spinae

A

Iliocostalis
Longissimus
Spinalis

Gross Anatomy Exam 1 (4 decks)

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