Shoulder and arm I Flashcards
What is raising your shoulders called?
Elevation
What is lowering your shoulders called?
Depression
What is bringing your shoulders forward called?
Protraction
What is bringing your shoulders back called?
Retraction
What is bringing you arms above your head called at your shoulders
Upward rotation
What is lowering your arms called at the shoulder?
Downwards rotation
What are the deep posterior axioappendicular muscles?
Levator scapulae
Rhomboid minor
Rhomboid major
What are the superficial posterior axioappendicular muscles?
Trapezius
Latissimus dorsi
Serratus anterior
What do deep posterior axio appendicular muscles do?
Elevate, retract, rotate scapula
What do superficial posterior axio appendicular muscles do?
Extend, adduct and medially rotate humerus
Describe levator scapulae
O: transverse processes of C1-C4 vertebrae
A: medial border of scapulae
I: dorsal scapular nerve
F: elevate, retract, rotate scapula
What is the origin of levator spinae
Transverse processes of C1-C4 vertebrae
What is the attachment of levator spinae
Medial border of the scapula
What is the innervation of levator spinae
Dorsal scapular nerve
What is the function of levator spinae
Elevation, retraction and rotation of scapula
Describe rhomboid major
O: spinous processes of T2-T5
A: medial border of scapula, below the spine of the scapula
I: dorsal scapular nerve
F: elevation, retraction and rotation of scapula
What is the origin of rhomboid major?
Spinous processes of T2-T5
What is the attachment of rhomboid major?
Medial border of scapula, below the spine of the scapula
What is the innervation of rhomboid major?
The dorsal scapular nerve
What is the function of rhomboid major?
Elevate, retract, rotate scapula
Describe rhomboid minor?
O: transverse processes of C7-T1 vertebrae
A: medial border of scapula
I: dorsal scapular nerve
F: Elevates, retracts, rotates scapula
What is the origin of rhomboid minor?
Transverse processes of C7-T1
What is the attachment of rhomboid minor?
Medial border of scapula
What is the innervation of rhomboid minor?
Dorsal scapular nerve
What is the function of rhomboid minor?
Elevate, retract, rotates scapula
What do the superficial axioappendicular muscles do?
Extend, adduct, medially rotate the humerus at the GH joint
What are the superficial axioappendicular muscles?
Latissimus dorsi
Trapezius
Serratus anterior
Describe latissimus dorsi
O: T6-T12 + iliac crest + thoracocolumnar fascia + inf 3 ribs
A: fibres converge to a tendon at the intertubercular sulcus of the humerus
I: thoracodorsal nerve
F: Extension, adduction, medial rotation
What is the origin of latissimus dorsi?
T6-T12, iliac crest, thoracocolumnar fascia + inf 3 ribs
What is the attachment of latissimus dorsi?
Fibres converge to a tendon at the intertubercular sulcus of the humerus
What is the innervation of latissimus dorsi?
Thoracodorsal nerve
Describe trapezius
O: Skull, C7-T12
A: Clavicle and acromion spine of scapula
I: Motor via accessory nerve and proprioception via C3,4
Fn: extension, adduction and medial rotation of humerus at GH joint
What is the origin of trapezius?
Skull, C7-T12
What is the attachment of trapezius?
Clavicle and the acromion of the scapula
What is the innervation of trapezius?
motor via accessory nerve (CXI)
proprioceptive via C3,4
What is the function of trapezius?
extension, adduction and lateral rotation of the humerus