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Gross Anatomy Exam 1 > Back Muscles > Flashcards

Back Muscles Flashcards

(58 cards)

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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

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A

Posterior Rami of Spinal Nerves

24
Actions of Splenius Capitis
Acting Alone- Laterally flex neck and rotate head to side of active muscles Acting Together- Extend Head and Neck
25
Origin of Splenius Cervicis
Nuchal Ligament | C7 to T6
26
Insertion of Splenius Cervicis
Tubercles of transverse process of C1 to C3 or C4
27
Innervation of Splenius Cervicis
Posterior Rami of Spinal Nerves
28
Actions of Splenius Cervicis
Acting Alone- Laterally flex neck and rotate head to side of active muscles Acting Together- Extend Head and Neck
29
I Love Spaghetti
Iliocostalis Longissimus Spinalis
30
Origin of Iliiocostalis
Broad Tendon from posterior part of Iliac Crest Posterior surface of Sacrum Sacro-iliac ligaments Sacral and inferior lumbar spinous processes Supraspinous Ligament
31
Insertion of Iliocostalis
(Lumborum, thoracis, and cervicis) Angle of Inferior Ribs and Cervical Transverse processes
32
Innervation of Iliocostalis
Posterior Rami of Spinal Nerves
33
Actions of Iliocostalis
Acting Bilaterally- extend vertebral column and head | Acting Unilaterally- laterally flex vertebral column
34
Origin of Longissimus
Broad Tendon from posterior part of Iliac Crest Posterior surface of Sacrum Sacro-iliac ligaments Sacral and inferior lumbar spinous processes Supraspinous ligament
35
Insertion of Longissimus
(Thoracis, cervicis, capitis) Ribs between tubercles and angles transverse processes in thoracic and cervical regions Mastoid process of Temporal Bone
36
Innervation of Longissimus
Posterior Rami of Spinal Nerves
37
Actions of Longissimus
Acting Bilaterally- extend vertebral column and head | Acting Unilaterally- laterally flex vertebral column
38
Origin of Spinalis
Broad Tendon from posterior part of Iliac Crest Posterior surface of Sacrum Sacro-iliac ligaments Sacral and inferior lumbar spinous processes Supraspinous ligament
39
Insertion of Spinalis
(Thoracis, cervicis, capitis) | Spinous processes in upper thoracic region and cranium
40
Innervations of Spinalis
Posterior Rami of Spinal Nerves
41
Actions of Spinalis
Acting Bilaterally- extend vertebral column and head | Acting Unilaterally- laterally flex vertebral column
42
Some More Ragu
Semispinalis Multifidus Rotatores
43
Origin of Semispinalis
(Thoracis, cervics, capitis) | Transverse processes C4 to T10
44
Insertion of Semispinalis
Occipital bone Spinous processes in upper thoracic and cervical regions spanning 4 to 6 segments
45
Innervation of Semispinalis
Posterior Rami of Spinal Nerves
46
Actions of Semispinalis
Extends head and thoracic and cervical regions of vertebral column Rotates them contra laterally
47
Origin of Multifidus
``` 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
Insertion of Multifidis
Thickest in Lumbar region | Entire length of Spinous processes of vertebra located 2 to 4 segments superior to origin
49
Innervation of Multifidus
Posterior Rami of Spinal Nerves
50
Actions of Multifidis
Unilateral contraction rotates to contralateral side | Stabilizes vertebrae during local movements of vertebral column
51
Origin of Rotatores
Transverse Processes of Vertebra | Best developed in the thoracic region
52
Insertion of Rotatores
Junction of Lamina and Transverse processes or Spinous processes of Vertebra immediately (Brevis) or two segments (Longus) superior to vertebrae origin
53
Innervation of Rotatores
Posterior Rami of Spinal Nerves
54
Actions of Rotatores
May function as organs of proprioception Possibly stabilize the vertebra Assist with local extension Rotatory movements of vertebral column
55
What are the Deep Layer of Intrinsic Back Muscles?
Semispinales Multifidus Rotatores
56
Superficial layer of Intrinsic Back Muscles
Splenius Capitis | Splenius Cervicis
57
Intermediate Layer of Intrinsic Back Muscles- Erector Spinae
Iliocostalis Longissimus Spinalis

Gross Anatomy Exam 1 (4 decks)

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