back muscles oian

Question 1

Trapezius ORIGIN

Answer 1

Skull - External occipital protuberance, Fascia - ligamentum nuchae, Vertebrae - spines of C7, T1-12

Question 2

Trapezius INSERTION

Answer 2

Clavicle - lateral 1/3, acromion and spine of scapula

Question 3

Trapezius ACTION

Answer 3

Both elevates (upper fibers) and depresses (lower fibers) shoulder; retracts scapula; also extends head

Question 4

Trapezius NERVE

Answer 4

Accessory n. (Cranial nerve XI)

Question 5

Latissimus dorsi ORIGIN

Answer 5

Vertebrae - spines of T6-T12 , Fascia - thoracolumbar fascia, Pelvic bone - iliac crest

Question 6

Latissimus dorsi INSERTION

Answer 6

Humerus - Intertubercular (bicipital) groove

Question 7

Latissimus dorsi ACTION

Answer 7

Adducts, extends, and medially rotates arm

Question 8

Latissimus dorsi NERVE

Answer 8

Thoracodorsal n.

Question 9

Levator scapulae ORIGIN

Answer 9

Vertebrae - transverse processes of C1-C4

Question 10

Levator scapulae INSERTION

Answer 10

Scapula - superior angle and medial border

Question 11

Levator scapulae ACTION

Answer 11

Elevates and adducts scapula

Question 12

Levator scapulae NERVE

Answer 12

Dorsal scapular n.

Question 13

Rhomboid minor ORIGIN

Answer 13

Vertebrae - spines of C7, T1

Question 14

Rhomboid minor INSERTION

Answer 14

Scapula - Medial border

Question 15

Rhomboid minor ACTION

Answer 15

Elevates and adducts scapula

Question 16

Rhomboid minor NERVE

Answer 16

Dorsal scapular n.

Question 17

Rhomboid major ORIGIN

Answer 17

Vertebrae - spines of T2-T5

Question 18

Rhomboid major INSERTION

Answer 18

Scapula - Medial border to inferior angle

Question 19

Rhomboid major ACTION

Answer 19

Elevates and adducts scapula

Question 20

Rhomboid major NERVE

Answer 20

Dorsal scapular n.

Question 21

Levatores costarum ORIGIN

Answer 21

Vertebrae - Transverse processes of C7, T1-11

Question 22

Levatores costarum INSERTION

Answer 22

Ribs - inferior to origin

Question 23

Levatores costarum ACTION

Answer 23

Raise ribs in inspiration

Question 24

Levatores costarum NERVE

Answer 24

Dorsal rami of thoracic spinal nerves

Question 25

Serratus posterior superior ORIGIN

Answer 25

Vertebrae - Spines of cervical and upper thoracic vertebrae

Question 26

Serratus posterior superior INSERTION

Answer 26

Ribs

Question 27

Serratus posterior superior ACTION

Answer 27

Raise ribs in inspiration

Question 28

Serratus posterior superior NERVE

Answer 28

Intercostal nerves

Question 29

Serratus posterior inferior ORIGIN

Answer 29

Vertebrae - Spines of upper lumbar and lower thoracic vertebrae

Question 30

Serratus posterior inferior INSERTION

Answer 30

Ribs

Question 31

Serratus posterior inferior ACTION

Answer 31

Lower ribs in expiration

Question 32

Serratus posterior inferior NERVE

Answer 32

Intercostal nerves

Question 33

Splenius ORIGIN

Answer 33

Vertebrae - Spines of T1-T4

Question 34

Splenius INSERTION

Answer 34

Splenius Capitis to Skull - Occipital and temporal bones; Splenius Cervicis to Vertebrae - Transverse processes of C2-C3

Question 35

Splenius ACTION

Answer 35

Extend neck and head (rotate in unilateral action)

Question 36

Splenius NERVE

Answer 36

Dorsal rami of spinal nerves

Question 37

Erector Spinae, 1) Iliocostalis, 2) Longissimus, 3) Spinalis ORIGIN

Answer 37

1) Iliocostalis from Ilium and ribs, 2) Longissimus from transverse processes of vertebrae, 3) Spinalis from spinous processes

Question 38

Erector Spinae, 1) Iliocostalis, 2) Longissimus, 3) Spinalis INSERTION

Answer 38

1) Iliocostalis to ribs and trans procresses, 2) Longissimus to transverse processes of vertebrae, 3) 3) Spinalis to spinous processes

Question 39

Erector Spinae, 1) Iliocostalis, 2) Longissimus, 3) Spinalis ACTION

Answer 39

Extend trunk and vertebral column

Question 40

Erector Spinae, 1) Iliocostalis, 2) Longissimus, 3) Spinalis NERVE

Answer 40

Dorsal rami of spinal nerves

Question 41

Transverso spinalis- 1) Semispinalis2) Multifidus, 3) Rotatores - ORIGIN

Answer 41

All take origin from transverse processes of vertebrae

Question 44

Transverso spinalis- 1) Semispinalis2) Multifidus, 3) Rotatores - INSERTION

Answer 44

1) Semispinalis extend across 5 or 6 vertebrae, 2) Multifidus extend across 3 or 4 vertebrae, 3) Rotatores extend across 1 or 2 vertebrae

Question 47

Transverso spinalis- 1) Semispinalis, 2) Multifidus, 3) Rotatores- ACTION

Answer 47

All extend trunk in bilateral action and rotate vertebral column in unilateral action

Question 50

Transverso spinalis- 1) Semispinalis, 2) Multifidus, 3) Rotatores- Nerve

Answer 50

Dorsal rami of spinal nerves