Muscles Connecting Upper Limb to The Spine Flashcards
Name the 3 trapezius muscles connecting the upper limb to the spine.
UPPER TRAPEZIUS \+ MIDDLE TRAPEZIUS \+ LOWER TRAPEZIUS
Which muscles would the acronyms LD, R, and LS refer to in regard to connections of upper limb to spine?
LATISSIMUS DORSI \+ RHOMBOIDS \+ LEVATOR SCAPULA
Superior attachment:
MIDDLE 1/3RD OF THE SUPERIOR NUCHAL LINE, EXTERNAL OCCIPITAL PROTUBERANCE (INION) TO THE C7 SP VIA THE NUCHAL LIGAMENT
Inferior/lateral attachment:
LATERAL CLAVICLE, ACROMION
Actions: - HEAD / NECK FIXED - S - T ELEVATION, S - T UPWARD ROTATION - SCAPULA FIXED - HEAD / NECK EXTENSION HEAD / NECK IPSILATERAL LATERAL FLEXION HEAD / NECK CONTRALATERAL ROTATION
UPPER TRAPEZIUS
What is the fiber direction of upper trapezius?
SUPEROMEDIAL
or
INFEROLATERAL
Medial attachment:
C7 - T5 SPs
Lateral attachment:
SUPERIOR LIP OF THE SPINE OF THE SCAPULA
Action:
S - T RETRACTION
MIDDLE TRAPEZIUS
Medial attachment:
T6 - T12 SPs
Lateral attachment:
MEDIAL END OF THE SPINE OF THE SCAPULA
(ROOT OF THE SPINE)
Action:
S - T DEPRESSION
S - T UPWARD ROTATION
LOWER TRAPEZIUS
What is the long list of actions of upper trapezius?
HINT
2 actions with head/neck fixed, 3 actions with scapula fixed
- HEAD / NECK FIXED - S - T ELEVATION, S - T UPWARD ROTATION - SCAPULA FIXED - HEAD / NECK EXTENSION HEAD / NECK IPSILATERAL LATERAL FLEXION HEAD / NECK CONTRALATERAL ROTATION
What is the superior attachment for upper trapezius?
MIDDLE 1/3RD OF THE SUPERIOR NUCHAL LINE, EXTERNAL OCCIPITAL PROTUBERANCE (INION) TO THE C7 SP VIA THE NUCHAL LIGAMENT
What is the inferior/lateral attachment for upper trapezius?
LATERAL CLAVICLE, ACROMION
What is the action performed by middle trapezius?
S - T RETRACTION
What is the medial attachment for middle trapezius?
C7 - T5 SPs
What is the lateral attachment for middle trapezius?
SUPERIOR LIP OF THE SPINE OF THE SCAPULA
What are the 2 actions performed by lower trapezius?
S - T DEPRESSION
S - T UPWARD ROTATION
What is the medial attachment for lower trapezius?
T6 - T12 SPs
What is the lateral attachment for lower trapezius?
MEDIAL END OF THE SPINE OF THE SCAPULA
ROOT OF THE SPINE
What is the fiber direction of lower trapezius?
SUPEROLATERAL
or
INFEROMEDIAL
Inferior/medial attachment:
SP T6 - ILIAC CREST, LUMBAR AND SACRAL VERTEBRAE VIA THE THORACOLUMBAR FASCIA, RIBS 9 - 12, INFERIOR ANGLE OF THE SCAPULA
Superior/lateral attachment:
FLOOR OF THE BICIPITAL GROOVE
Actions:
G - H INTERNAL ROTATION
G - H EXTENSION
G - H ADDUCTION
LATISSIMUS DORSI
What are the 3 actions performed by latissimus dorsi?
G - H INTERNAL ROTATION
G - H EXTENSION
G - H ADDUCTION
What is the inferior medial attachment for latissimus dorsi?
SP T6 - ILIAC CREST, LUMBAR AND SACRAL VERTEBRAE VIA THE THORACOLUMBAR FASCIA, RIBS 9 - 12, INFERIOR ANGLE OF THE SCAPULA
What is the superior lateral attachment for latissimus dorsi?
FLOOR OF THE BICIPITAL GROOVE
Medial attachment:
SP C7 - T5
Lateral attachment:
ROOT OF THE SPINE OF THE SCAPULA TO THE INFERIOR ANGLE OF THE SCAPULA
Actions: S - T RETRACTION S - T DOWNWARD ROTATION S - T ELEVATION HELPS SERRATUS ANTERIOR HOLD SCAPULA AGAINST THE RIBS
RHOMBOIDS
The rhomboids are _____ to trapezius.
DEEP
What is the fiber direction of the rhomboids from the spine to the medial scapula?
INFEROMEDIAL
What does S - T stand for?
SCAPULO THORACIC
