upper limb to vertebral column muscles Flashcards
1
Q
Trapezius
A
large kite shaped superficial muscle connects spine to shoulder
divided into 3 parts: upper, middle, and lower.
2
Q
trapezius origin
A
- all down along midline towards spine and median plane
- external occipital protuberance (bony part sticking out of base of skull)
- superior nuchal line (directly below EOP)
- ligamentum nuchae
- spinous process C7
- 12 thoracic vertebrae spines
3
Q
trapezius insertion
A
- posterior lateral 1/3 of clavicle
- medial border of acromion
- spine of scapula
4
Q
trapezius innervation
A
accessory nerve
5
Q
trapezius action
A
- upper fibres elevate the scapula
- middle fibres retract scapula
- lower fibres depress scapula
- rotate the scapula during abduction of humerus
- tilt and extend the neck
6
Q
latissimus dorsi
A
looks like wings on lower to mid back
7
Q
latissimus dorsi origin
A
- spinous process of T7-T12
- lumbar sacral vertebrae
- posterior 1/3 of iliac crest
- inferior 3-4 ribs
- inferior angle of scapula
8
Q
latissimus dorsi insertion
A
floor of the intertubercular/bicipital groove
9
Q
latissimus dorsi innervation
A
thoracodorsal nerve
10
Q
latissimus dorsi action
A
extends, adducts and medially rotates the arm
11
Q
levator scapulae origin
A
transverse process of C1-C4
12
Q
levator scapulae insertion
A
- medial border of scapula above spine
- superior angle of scapula
13
Q
Levator scapulae innervation
A
dorsal scapular nerve
14
Q
Levator scapulae action
A
elevates the medial border of the scapula
tilt the head
15
Q
rhomboid minor origin
A
spines of C7 and T1 vertebrae
