Posterior Appendicular Muscles

Question 1

what are they?

Answer 1

posterior muscles that attach scapula and humerus to the axial skeleton, or the scapular to the humerus

Question 2

Trapezius innervation

Answer 2

motor: accessory nerve/CN11 sensory: C3/C4 spinal nerves

Question 3

Latissimus dorsi innervation

Answer 3

thoracodorsal nerve

Question 4

Levator scapulae

Answer 4

3rd and 4th cervical spinal nerves and dorsal scapular nerve

Question 5

Rhomboid major

Answer 5

dorsal scapular nerve

Question 6

Rhomboid minor

Answer 6

dorsal scapular nerve

Question 7

Accessory nerve innervates (CN XI)

Answer 7

sternocleidomastoid and trapezius

Question 8

CN XI leaves via

Answer 8

foramen magnum

Question 9

Roots of accessory nerve emerge from cervical vertebrae

Answer 9

C1-C5

Question 10

Dorsal scapular nerve arises from

Answer 10

C5

Question 11

Thoracodorsal nerve arises from

Answer 11

posterior cord

Question 12

Arrange these superficial to deep: erector spinae transversospinalis hypaxial

Answer 12

Hypaxial –>erector spinae group –> transversospinalis

Question 13

Trapezius: blood supply

Answer 13

transverse cervical artery

Question 14

Trapezius: actions

Answer 14

elevates, depresses, retracts scapula rotates glenoid fossa

Question 15

Trapezius: innervation

Answer 15

motor: accessory nerve (CN XI) pain and proprioception: C3 and C4

Question 16

What are the ligaments and origins of the trapezius?

Answer 16

Posterior: nuchal ligament O: external occipital protuberance and superior nuchal line C7-T12 vertebrae anterior lateral 1/3 of clavicle spine and acromion process

Question 17

What actions doesnt the scapula perform?

Answer 17

protraction and DOWNWARD rotation

Question 18

Trapezius nuchal ligament is responsible for

Answer 18

retraction

Question 19

thoracic insertions of the trapezius are responsible for

Answer 19

depression and upward rotation

Question 20

Scapular and cervical insertions of trapezius are responsible for

Answer 20

elevation and upward rotation

Question 21

if the inferior angle of the scapula moves toward the axillary region, this is called

Answer 21

upward rotation

Question 22

Triangle of Auscultation

Answer 22

less tissue, easier to hear breathing sound between deltoid, latissimus, and trapezius

Question 23

???

Answer 23

Triangle of auscultation

Question 24

?

Answer 24

lumbar triangle

where herniation often occurs

Question 25

Latissimus dorsi

proximal attachment and distal

Answer 25

spinous process of inferior 6 thoracic vertebrae

thoracolumbar fascia

iliac crest

inferior 3 ribs

distal: bicipital groove

Question 26

latissimus dorsi

actions

Answer 26

extends, adducts, medially rotates humerus. raises torso towards arms during climbing

Question 27

Latissimus dorsi moves the humerus at the

Answer 27

shoulder joint (glenohumeral joint)

Question 28

Latissimus dorsi

Answer 28

Medial rotation

Adduction

Extention of humerus

Question 29

Rhomboid major m.

prox and distal attachments

Answer 29

prox major: thoracic vert

prox minor: nuchal ligament

distal major: medial border of rib to inferior angle

distal minor: mediat end of scapula spin

Question 30

rhomboid major and minor: blood supply

Answer 30

dorsal scapular artery

Question 31

Rhomboid major minor: actions

Answer 31

both retract, elevate, and rotate scapula downward, as well as fix it to scapular spine

Question 32

Levator scapulae: innervation

Answer 32

dorsal scapular nerve and cervical nerves 3-4

Question 33

Levator scapulae: blood supply

Answer 33

dorsal scapular artery

Question 34

Levator scapular does what

Rhomboids do what

Answer 34

Levator elevates, downward rotation scapula

rhomboids elevate, downward rotate, retracts scapula

the difference is retraction

Question 35

??

Question 36

?