Muscles of the Back and Thorax (Movement, SPOT TEST 1&2) Flashcards

1
Q

Function of Serratus Anterior?

A

Holds the scapula against the thoracic wall

Protracts and laterally rotates the scapula

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2
Q

Origin of Serratus Anterior

A

Ribs 1-8 and relevant intercostal spaces

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3
Q

Insertion of Serratus Anterior

A

Medial border of the scapula (passes under before inserting)

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4
Q

Innervation of Serratus Anterior

A

Long Thoracic Nerve

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5
Q

Functions of Trapezius Muscle?

A

Upper fibres ELEVATE the scapula
Middle fibres RETRACT/ABDUCT the scapula
Lower fibres DEPRESS the scapula

All fibres working together rotate the scapula during abduction above 90 degrees

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6
Q

Origin of Trapezius

A

Spinous Processes of C1-T12

External Occipital Protuberance
Ligamentum Nuchae

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7
Q

Insertion of Trapezius

A

Superior spine of Scapula
Acromion
Lateral 1/3 of Clavicle

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8
Q

Innervation of Trapezius

A

Accessory Nerve (CN11)

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9
Q

Function of Deltoid

A

Abduction of arm beyond 15 degrees

Assistance in flexion and extension

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10
Q

Origin of Deltoid

A

Inferior to spine of scapula
Acromion
Lateral 1/3 of Clavicle

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11
Q

Insertion of Deltoid

A

Deltoid Tuberosity of the Humerus

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12
Q

Innervation of Deltoid

A

Axillary Nerve

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13
Q

Function of Lattisimus Dorsi

A

Adduction
Medial Rotation
Flexion
Extension

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14
Q

Origin of Latissimus Dorsi

A

T7-T12 Spinal Processes
Fascia over the Lumbar Vertebrae
Iliac Crest

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15
Q

Insertion of Latissimus Dorsi

A

Intertubercular Sulcus of humerus

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16
Q

Innervation of Latissimus Dorsi

A

Thoracodorsal Nerve

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17
Q

Function of Rhomboid Major

A

Elevation and retraction of the scapula

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18
Q

Origin of Rhomboid Major

A

Spinous Processes of T2-T5

Supraspinatous Ligaments

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19
Q

Insertion of Rhomboid Major

A

Posterior Medial Surface of the Scapula

root of spine to inferior angle

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20
Q

Innervation of Rhomboid Major

A

Dorsal Scapular Nerve

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21
Q

Function of Rhomboid Minor

A

Elevation and retraction of the scapula

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22
Q

Origin of Rhomboid Minor

A

Spinous Processes of C7-T1

Lower Ligamentum Nuchae

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23
Q

Insertion of Rhomboid Minor

A

Posterior Medial Scapula

superior angle to root of spine

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24
Q

Innervation of Rhomboid Minor

A

Dorsal Scapular Nerve

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25
Q

Function of Levator Scapulae

A

Elevation of the Scapula

26
Q

Origin of Levator Scapulae

A

Transverse Processes of C1 and C2

Posterior Tubercles of Transverse Processes of C3 and C4

27
Q

Insertion of Levator Scapulae

A

Posterior surface of medial border of Scapula

28
Q

Innervation of Levator Scapulae

A

Dorsal Scapular Nerves

C3 and C4 Spinal nerves

29
Q

Function of Subclavius

A

Depresses the clavicle, pulling the shoulder down

Pulls the clavicle medially

30
Q

Origin of Subclavius

A

Rib 1 (Cartilage/Rib junction)

31
Q

Insertion of Subclavius

A

Middle of Clavicle

32
Q

Innervation of Subclavius

A

Nerve to Subclavius

33
Q

Function of Pectoralis Major

A

Flexion
Adduction
Medial Rotation of the arm

The clavicular head FLEXES the EXTENDED arm
The sternocostal head EXTENDS the FLEXED arm

34
Q

Origin of Pectoralis Major

A

Anterior Surface of the Clavicle (Clavicular head)

Sternum, Costal Cartilage 1-7, External Oblique (Sternocostal head)

35
Q

Insertion of Pectoralis Major

A

Intertubercular Sulcus of the Humerus

36
Q

Innervation of Pectoralis Major

A

Medial Pectoral Nerve

Lateral Pectoral Nerve

37
Q

Function of Pectoralis Minor

A

Depresses the shoulder

Protracts the Scapula

38
Q

Origin of Pectoralis Minor

A

Anterior, Superior Border of Ribs 3-5/ Clavipectoral Fascia

39
Q

Insertion of Pectoralis Minor

A

Coracoid Process of the Scapula

40
Q

Innervation of Pectoralis Minor

A

Medial Pectoral Nerve

41
Q

Muscles in Intermediate Group of Back muscles

A

Serratus Posterior Superior

Serratus Posterior Inferior

42
Q

Origin of Serratus Posterior Superior

A

Ligamentum Nuchae

Spinous ProcessesC7-T3

43
Q

Insertion of Serratus Posterior Superior

A

Ribs 2-5

44
Q

Innervation of Serratus Posterior Superior

A

Thoracic Nerves T2-T5

Anterior Rami

45
Q

Function of Serratus Posterior Superior

A

Elevate Ribs 2-5

46
Q

Origin of Serratus Posterior Inferior

A

Spinous Processes T11-L3

47
Q

Insertion of Serratus Posterior Inferior

A

Ribs 9-12

48
Q

Innervation of Serratus Posterior Inferior

A

Thoracic Nerves T9-T12

Anterior Rami

49
Q

Function of Serratus Posterior Inferior

A

Depress ribs 9-12

50
Q

Fascia covering and organising Deep/Intrinsic Muscles of the back

A

Thoracolumbar Fascia

51
Q

Innervation of Deep/Intrinsic Back Muscles

A

Posterior Rami of Spinal Nerves

52
Q

Muscles in Spinotransversales (Superficial Intrinsic) group

A

Splenius Capitis

Splenius Cervicis

53
Q

Function of spinotransversales muscles

A

Extension of Neck (acting together)

Rotation of Neck (acting individually)

54
Q

Origin of Splenius Capitis

A

Mastoid Process

Superior Nuchal Line

55
Q

Insertion of Splenius Capitis

A

Ligamentum Nuchae

Spinous Processes C7-T4

56
Q

Origin of Splenius Cervicis

A

Transverse Processes C1-C3

57
Q

Insertion of Splenius Cervicis

A

Spinous Processes T3-T6

58
Q

Muscles in Erector Spinae (Intermediate intrinsic) group

A

Spinalis (most medial)
Longissimus
Iliocostalis (most lateral)

59
Q

Function of erector spinae muscles

A

Primary extensors of the vertebral column

60
Q

Muscles in Transversospinales (Deep intrinsic) group

A

Semispinalis
Multifidis
Rotares

61
Q

Function of transversospinales muscles

A

Extension and Rotation of Vertebral Column (fine movements)