Gross Anatomy - Upper Extremity 1

Front 1

rhomboid minor - origin

Back 1

spines of C7 + T1, lower part of ligamentum nuchae

Front 2

rhomboid minor - insertion

Back 2

medial border of scapula @ root of spine

Front 3

rhomboid minor - action

Back 3

retract/stabilize scapula
elevate medial border of scapula
rotate scapula to depress lateral angle (adduction of arm)

Front 4

rhomboid minor - blood supply

Back 4

dorsal scapular artery

Front 5

rhomboid minor - nerve supply

Back 5

dorsal scapular nerve

Front 6

rhomboid major - origin

Back 6

spines of T2-T5, supraspinous ligament

Front 7

rhomboid major - insertion

Back 7

medial border of scapula below the spine

Front 8

rhomboid major - action

Back 8

retracts/stabilizes scapula
elevates medial border of scapula causing downward rotation
assists in adduction of arm

Front 9

iliocostalis - action

Back 9

extension
lateral flexion of vertebral column
rotates ribs for forceful inspiration

Front 10

iliocostalis - blood supply

Back 10

posterior intercostal/lumbar arteries

Front 11

iliocostalis - nerve supply

Back 11

dorsal primary divisions of spinal nerves

Front 12

longissimus - action

Back 12

extension
lateral flexion of vertebral column
rotates ribs for forceful inspiration

Front 13

longissimus - blood supply

Back 13

posterior intercostal/lumbar arteries

Front 14

longissimus - nerve supply

Back 14

dorsal primary divisions of spinal nerves

Front 15

spinalis - action

Back 15

extends vertebral column

Front 16

spinalis - blood supply

Back 16

posterior intercostal/lumbar arteries

Front 17

spinalis - nerve supply

Back 17

dorsal primary divisions of spinal nerves

Front 18

serratus posterior superior - origin

Back 18

ligamentum nuchae, spinous processes C7-T3

Front 19

serratus posterior superior - insertion

Back 19

upper borders of ribs 2-5 lateral to their angles

Front 20

serratus posterior superior - action

Back 20

raises ribs in inspiration

Front 21

serratus posterior superior - blood supply

Back 21

posterior intercostal arteries

Front 22

serratus posterior superior - nerve supply

Back 22

T1-T4

Front 23

serratus posterior inferior - origin

Back 23

spinous processes of T4-5 and L1-2

Front 24

serratus posterior inferior - insertion

Back 24

lower borders of bottom 4 ribs

Front 25

serratus posterior inferior - action

Back 25

pulls ribs down, resists pull of diaphragm

Front 26

serratus posterior inferior - blood supply

Back 26

posterior intercostal arteries

Front 27

serratus posterior inferior - nerve supply

Back 27

T9-T12

Front 28

trapezius (upper fibers) - origin

Back 28

medial 1/3 of superior nuchal line
ligamentum nuchae
external occipital protuberance
spinous processes C7-T12

Front 29

trapezius (upper fibers) - insertion

Back 29

lateral 1/3 of clavicle

Front 30

trapezius (upper fibers) - action

Back 30

elevates scapula
rotates scapula

Front 31

trapezius (upper fibers) - blood supply

Back 31

transverse cervical artery

Front 32

trapezius (upper fibers) - nerve supply

Back 32

accessory nerve (11th cranial)

Front 33

trapezius (middle fibers) - origin

Back 33

medial 1/3 of superior nuchal line
ligamentum nuchae
external occipital protuberance
spinous processes C7-T12

Front 34

trapezius (middle fibers) - insertion

Back 34

acromion & spine of scapula

Front 35

trapezius (middle fibers) - action

Back 35

retracts (adducts) scapula
rotates scapula

Front 36

trapezius (middle fibers) - blood supply

Back 36

transverse cervical artery

Front 37

trapezius (middle fibers) - nerve supply

Back 37

accessory nerve (cranial nerve 11)

Front 38

trapezius (lower fibers) - origin

Back 38

medial 1/3 of nuchal line
ligamentum nuchae
external occipital protuberance
spinous processes C7-T12

Front 39

trapezius (lower fibers) - insertion

Back 39

medial portion of spine of scapula

Front 40

trapezius (lower fibers) - action

Back 40

depresses scapula

Front 41

trapezius (lower fibers) - blood supply

Back 41

transverse cervical artery

Front 42

trapezius (lower fibers) - nerve supply

Back 42

accessory nerve (cranial nerve 11)

Front 43

what do spinalis, longissimus, & iliocostalis make up?

Back 43

erector spinae

Front 44

latissimus dorsi - origin

Back 44

spinous processes T6-T12, L1-L5, S1-S5
supraspinatal ligament
iliac crest
outer surfaces of lower ribs
inferior angle of scapula

Front 45

latissimus dorsi - insertion

Back 45

bottom of bicipital (intertubercular) groove

Front 46

latissimus dorsi - action

Back 46

extends, adducts, medially rotates arm
draws shoulder downward/backward
keeps inferior angle of scapula against chest wall
accessory muscle of respiration

Front 47

latissimus dorsi - blood supply

Back 47

thoracodorsal artery

Front 48

latissimus doris - nerve supply

Back 48

thoracodorsal nerve

Front 49

levator scapulae - origin

Back 49

posterior tubercle of transverse processes of C1-C4

Front 50

levator scapulae - insertion

Back 50

medial border of scapula at & above spine

Front 51

levator scapulae - action

Back 51

elevates medial border of scapula
rotates to lower lateral angle of scapula
bends neck laterally
pulls scapula medial/up (w/trap & rhomboids)

Front 52

levator scapulae - blood supply

Back 52

dorsal scapular artery

Front 53

levator scapulae - nerve supply

Back 53

dorsal scapular nerve

Front 54

what are the superficial muscles of the deep back?

Back 54

splenius capitus & cervicus
spinalis thoracis, cervicus, capitus
longissimus thoracis, cervicus, capitus
iliocostalis lumborum, thoracis, cervicis

Front 55

what are the transversospinalis muscles of the deep back

Back 55

semispinalis thoracis, cervicis, capitus
multifidus lumborum
rotatores thoracis

Front 56

what are the segmental muscles of the deep back?

Back 56

interspinalis cervicis, lumborum
intertransversii cervicis, lumborum

Front 57

blood supply for all deep back muscles

Back 57

posterior intercostal arteries/lumbar arteries

Front 58

innervation for all deep back muscles

Back 58

dorsal rami