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

Question 1

Function of Serratus Anterior?

Answer 1

Holds the scapula against the thoracic wall

Protracts and laterally rotates the scapula

Question 2

Origin of Serratus Anterior

Answer 2

Ribs 1-8 and relevant intercostal spaces

Question 3

Insertion of Serratus Anterior

Answer 3

Medial border of the scapula (passes under before inserting)

Question 4

Innervation of Serratus Anterior

Answer 4

Long Thoracic Nerve

Question 5

Functions of Trapezius Muscle?

Answer 5

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

Question 6

Origin of Trapezius

Answer 6

Spinous Processes of C1-T12

External Occipital Protuberance
Ligamentum Nuchae

Question 7

Insertion of Trapezius

Answer 7

Superior spine of Scapula
Acromion
Lateral 1/3 of Clavicle

Question 8

Innervation of Trapezius

Answer 8

Accessory Nerve (CN11)

Question 9

Function of Deltoid

Answer 9

Abduction of arm beyond 15 degrees

Assistance in flexion and extension

Question 10

Origin of Deltoid

Answer 10

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

Question 11

Insertion of Deltoid

Answer 11

Deltoid Tuberosity of the Humerus

Question 12

Innervation of Deltoid

Answer 12

Axillary Nerve

Question 13

Function of Lattisimus Dorsi

Answer 13

Adduction
Medial Rotation
Flexion
Extension

Question 14

Origin of Latissimus Dorsi

Answer 14

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

Question 15

Insertion of Latissimus Dorsi

Answer 15

Intertubercular Sulcus of humerus

Question 16

Innervation of Latissimus Dorsi

Answer 16

Thoracodorsal Nerve

Question 17

Function of Rhomboid Major

Answer 17

Elevation and retraction of the scapula

Question 18

Origin of Rhomboid Major

Answer 18

Spinous Processes of T2-T5

Supraspinatous Ligaments

Question 19

Insertion of Rhomboid Major

Answer 19

Posterior Medial Surface of the Scapula

root of spine to inferior angle

Question 20

Innervation of Rhomboid Major

Answer 20

Dorsal Scapular Nerve

Question 21

Function of Rhomboid Minor

Answer 21

Elevation and retraction of the scapula

Question 22

Origin of Rhomboid Minor

Answer 22

Spinous Processes of C7-T1

Lower Ligamentum Nuchae

Question 23

Insertion of Rhomboid Minor

Answer 23

Posterior Medial Scapula

superior angle to root of spine

Question 24

Innervation of Rhomboid Minor

Answer 24

Dorsal Scapular Nerve

Question 25

Function of Levator Scapulae

Answer 25

Elevation of the Scapula

Question 26

Origin of Levator Scapulae

Answer 26

Transverse Processes of C1 and C2 | Posterior Tubercles of Transverse Processes of C3 and C4

Question 27

Insertion of Levator Scapulae

Answer 27

Posterior surface of medial border of Scapula

Question 28

Innervation of Levator Scapulae

Answer 28

Dorsal Scapular Nerves | C3 and C4 Spinal nerves

Question 29

Function of Subclavius

Answer 29

Depresses the clavicle, pulling the shoulder down | Pulls the clavicle medially

Question 30

Origin of Subclavius

Answer 30

Rib 1 (Cartilage/Rib junction)

Question 31

Insertion of Subclavius

Answer 31

Middle of Clavicle

Question 32

Innervation of Subclavius

Answer 32

Nerve to Subclavius

Question 33

Function of Pectoralis Major

Answer 33

Flexion Adduction Medial Rotation of the arm The clavicular head FLEXES the EXTENDED arm The sternocostal head EXTENDS the FLEXED arm

Question 34

Origin of Pectoralis Major

Answer 34

Anterior Surface of the Clavicle (Clavicular head) Sternum, Costal Cartilage 1-7, External Oblique (Sternocostal head)

Question 35

Insertion of Pectoralis Major

Answer 35

Intertubercular Sulcus of the Humerus

Question 36

Innervation of Pectoralis Major

Answer 36

Medial Pectoral Nerve | Lateral Pectoral Nerve

Question 37

Function of Pectoralis Minor

Answer 37

Depresses the shoulder | Protracts the Scapula

Question 38

Origin of Pectoralis Minor

Answer 38

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

Question 39

Insertion of Pectoralis Minor

Answer 39

Coracoid Process of the Scapula

Question 40

Innervation of Pectoralis Minor

Answer 40

Medial Pectoral Nerve

Question 41

Muscles in Intermediate Group of Back muscles

Answer 41

Serratus Posterior Superior | Serratus Posterior Inferior

Question 42

Origin of Serratus Posterior Superior

Answer 42

Ligamentum Nuchae | Spinous ProcessesC7-T3

Question 43

Insertion of Serratus Posterior Superior

Answer 43

Ribs 2-5

Question 44

Innervation of Serratus Posterior Superior

Answer 44

Thoracic Nerves T2-T5 | Anterior Rami

Question 45

Function of Serratus Posterior Superior

Answer 45

Elevate Ribs 2-5

Question 46

Origin of Serratus Posterior Inferior

Answer 46

Spinous Processes T11-L3

Question 47

Insertion of Serratus Posterior Inferior

Answer 47

Ribs 9-12

Question 48

Innervation of Serratus Posterior Inferior

Answer 48

Thoracic Nerves T9-T12 | Anterior Rami

Question 49

Function of Serratus Posterior Inferior

Answer 49

Depress ribs 9-12

Question 50

Fascia covering and organising Deep/Intrinsic Muscles of the back

Answer 50

Thoracolumbar Fascia

Question 51

Innervation of Deep/Intrinsic Back Muscles

Answer 51

Posterior Rami of Spinal Nerves

Question 52

Muscles in Spinotransversales (Superficial Intrinsic) group

Answer 52

Splenius Capitis | Splenius Cervicis

Question 53

Function of spinotransversales muscles

Answer 53

Extension of Neck (acting together) Rotation of Neck (acting individually)

Question 54

Origin of Splenius Capitis

Answer 54

Mastoid Process | Superior Nuchal Line

Question 55

Insertion of Splenius Capitis

Answer 55

Ligamentum Nuchae | Spinous Processes C7-T4

Question 56

Origin of Splenius Cervicis

Answer 56

Transverse Processes C1-C3

Question 57

Insertion of Splenius Cervicis

Answer 57

Spinous Processes T3-T6

Question 58

Muscles in Erector Spinae (Intermediate intrinsic) group

Answer 58

Spinalis (most medial) Longissimus Iliocostalis (most lateral)

Question 59

Function of erector spinae muscles

Answer 59

Primary extensors of the vertebral column

Question 60

Muscles in Transversospinales (Deep intrinsic) group

Answer 60

Semispinalis Multifidis Rotares

Question 61

Function of transversospinales muscles

Answer 61

Extension and Rotation of Vertebral Column (fine movements)