IMPORTANT MUSCLES

Question 1

Trapezius Origin

Answer 1

Superior nuchal line, external occipital protuberance, nuchal ligament, spinous process of C7-T12

Question 2

Trapezius Insertion

Answer 2

clavicle, acromion, spine of scapula

Question 3

Trapezius Vessels

Answer 3

supreficial branch of transverse cervical artery

Question 4

Trapezius Actions

Answer 4

ERR- elevation, retraction, rotation of the scapula

Question 5

Lats Origin

Answer 5

spinous process of T7-12, thoracolumbar fascia, iliac crest, inferior 3-4 ribs

Question 6

Lats Insertion

Answer 6

intertubercular groove of humerus

Question 7

Lats Innervation

Answer 7

thoracodorsal nerve

Question 8

Lats Vessels

Answer 8

thoracodorsal artery

Question 9

Lats Actions

Answer 9

EAM- extends, adducts, medially rotates

Question 10

Rhomboid names

Answer 10

minor, major, lavetor scapulae

Question 11

Rhomboids Innervation

Answer 11

dorsal scapular nerve

Question 12

Rhomboids Vessels

Answer 12

deep branch of transverse cervical artery

Question 13

Rhomboid Minor Origins

Answer 13

ligamentum nuchae, C7 and T1 spinous processes, base of spine of scapula

Question 14

Rhomboid Major Origins

Answer 14

T2-5 spinous processes, below base of scapula dorsally

Question 15

Rhomboids Actions

Answer 15

retraction of scapula - PUSH UPS

Question 16

Levator Scapulae Action

Answer 16

elevates scapula, tilts glenoid cavity down

Question 17

Levator Scapulae Origin

Answer 17

posterior tubercles of transverse processes of C1-4

Question 18

Lavetor Scapulae Insertion

Answer 18

medial border of scapula (superior angle)

Question 19

Lavetor Scapulae Innervation

Answer 19

dorsal scapular nerve

Question 20

Serratus Posterior Superior Origin

Answer 20

attached to nuchal ligament, C7-T1 spines and superior borders of ribs 2-4

Question 21

Serratus Posterior Inferior Origin

Answer 21

spinous processes of T11 - L3 and inferior borders of ribs 8/9-12

Question 22

Serratus form what layer?

Answer 22

form the deepest layer of the extrinsic muscles of the back

Question 23

Serratus Function

Answer 23

Inspiratory in function

Question 24

Serratus Innervation

Answer 24

intercostal nerves

Question 25

Serratus Vessels

Answer 25

intercostal arteries

Question 26

Intrinsic Muscles Layer 1

Answer 26

Spinotransversalis (Splenius Group) Splenius capitis/cervicis

Question 27

Intrinsic Muscles Layer 2

Answer 27

Erector spinae group or sacrospinalis Spinalis, Longissimus, Iliocostalis

Question 28

Intrinsic Muscles Layer 3 Name

Answer 28

transversospinalis group

Question 29

Intrinsic Muscles Layer 3

Answer 29

Semispinalis capitis/cervicis, rotatores, multifidus

Question 30

Intrinsic Muscles Layer 4 Name

Answer 30

ILI Group

Question 31

Intrinsic Muscles Layer 4

Answer 31

Interspinales cervicis, intertransversarii cervicis, levatores costorum, interspinales lumborum, intertransversarii lumborum

Question 32

Suboccipital Muscles

Answer 32

rectus capitis posterior minor/major, obliquus capitis superior/inferior COVERED BY THE SEMISPINALIS CAPIITIS

Question 33

Suboccipital Nerves

Answer 33

Dorsal primary rami of C1 and C2

Question 34

Suboccipital Arteries

Answer 34

occipital and vertebral arteries

Question 35

What are all the intrinsic back muscles innervate by?

Answer 35

posterior rami of the spinal nerves

Question 36

The superficial back muscles (extrinsic) are innervated by what primary rami?

Answer 36

ventral primary rami

Question 37

The deep back muscles are innervated by what collectively?

Answer 37

dorsal primary rami

Question 38

What is housed in the suboccipital triangle?

Answer 38

suboccipital nerve and vertebral artery

Question 39

What are the borders of the suboccipital triangle?

Answer 39

obliquus capitis inferior, obliquus capitis superior, and rectus capitis posterior major

Question 40

Trapezius Innervation

Answer 40

Spinal accessory nerve CN XI