Muscles of the Upper Limb - Posterior Shoulder and Rotator Cuff Flashcards
Name nerve A
A - Dorsal scapular nerve
Name muscle A
A - Trapezius
What is the function of muscle A?
- Abductor of arm (beyond initial 15º achieved by supraspinatus)
- Flexion of arm (clavicular fibres)
- Extension of arm (posterior fibres)
A - Deltoid
What is the function of muscle A?
Lateral rotation of arm (at glenohumeral joint)
A - Teres minor
N.b the teres minor is a rotator cuff muscle
What are the origin and insertion sites for muscle A?
Origin - Spinous processes of T2-T5 and associated supraspinous ligaments
Insertion - Posterior surface of medial border of scapula (from root of spine to inferior angle of scapula)
A - Rhomboid major
Name muscle A
A - Infraspinatus
Name muscle A
A - Trapezius
Name muscle A
A - Teres major
Name muscle A
A - Levator scapulae
Name muscle A
A - Levator scapulae
What is the function of muscle A?
- Medial rotation of arm (at glenohumeral joint)
- Extension of arm (at glenohumeral joint)
A - Teres major
What is the innervation of muscle A?
Axillary nerve (C5 and C6)
A - Deltoid
What is the function of muscle A?
- Extension of forearm (at elbow joint)
- Abduction of arm (at glenohumeral joint)
- Extension of arm (at glenohumeral joint)
A - Long head of triceps brachii
What is the innervation of muscles A and B?
Dorsal scapular nerve (C5 and C6)
A - Rhomboid minor
B - Rhomboid major
What are the spaces A, B and C?
A - Triangular space
B - Quadrangular space
C - Trianglular interval
What are the origin and insertion sites for muscle A?
Origin - Upper 2/3rds of flattened strip of bone on posterior surface of scapula (immediately adjacent to lateral border of scapula
Insertion - Greater tubercle of humerus (Inferior facet on posterior surface)
A - Teres minor
Name nerve A
A - Accessory nerve (XI)
What are the origin and insertion sites for muscle A?
Origin - Transverse processes of C1 and C2 and posterior tubercles of transverse processes of C3 and C4
Insertion - Posterior surface of medial border of scapula (from superior angle to root of spine of scapula)
A - Levator scapulae
Name muscles A and B
A - Rhomboid minor
B - Rhomboid minor
What is the innervation of muscle A?
Accessory nerve (XI) - Motor
Anterior rami of C3 and C4 - Sensory
A - Trapezius
Name nerve A
A - Axillary nerve
What is the function of muscle A?
Initiation of abduction of arm to 15º (at glenohumeral joint)
A - Supraspinatus
N.b the supraspinatus is a rotator cuff muscle
What is the function of muscle A?
Elevation of scapula
A - Levator scapulae
Name muscles A to D
A - Infraspinatus
B - Supraspinatus
C - Subscapularis
D - Teres minor
Name muscle A
A - Teres minor
Name muscle A
A - Trapezius
What is the innervation of muscle A?
Inferior subscapular nerve (C5, C6 and C7)
A - Teres major
What is the function of muscle A?
- Elevation scapula
- Retraction of scapula
A - Rhomboid minor
Name muscle A
A - Long head of triceps brachii
What are the origin and insertion sites for muscle A?
Origin - Infraspinous fossa of scapula (medial 2/3rds) and deep fascia covering the muscle
Insertion - Greater tubercle of humerus (middle facet on posterior surface)
A - Infraspinatus
What are the origin and insertion sites for muscle A?
Origin - Posterior surface of inferior angle of scapula (elongate oval area)
Insertion - Intertubercular sulcus of the greater tubercle of the humerus (medial lip)
A - Teres major
Name muscle A
A - Trapezius
What is the innervation of muscle A?
Axillary nerve
A - Teres minor
What is the function of muscle A?
- Elevation of scapula
- Retraction of scapula
A - Rhomboid major
What is the function of muscle A?
- Elevator of scapula
- Rotator of scapula (during abduction of humerus above horizontal)
- Retraction of scapula (middle fibres)
- Depress scapula (lower fibres)
A - Trapezius
Name muscles A and B
A - Rhomboid minor
B - Rhomboid major
Name muscles A and B
A - Levator scapulae
B - Trapezius
What is the innervation of muscle A?
Radial nerve (C6, C7 and C8)
A - Long head of triceps brachii
What is the function of muscle A?
Lateral rotation of arm (at glenohumeral joint)
A - Infraspinatus
N.b the infraspinatus is a rotator cuff muscle
What is the innervation of muscle A?
Suprascapular nerve (C5 and C6)
A - Supraspinatus
Name muscle A
A - Deltoid
What are the origin and insertion sites for muscle A?
Origin - Infragenoid tubercle on scapula
Insertion - Olecranon process of ulna
A - Long head of triceps brachii
What are the origin and insertion sites for muscle A?
Origin - Lower end of ligamentum nuchae and spinous processes of C7 and T1
Insertion - Posterior surface of medial border of scapula (at root of spine of scapula)
A - Rhomboid minor
What is the innervation of muscle A?
Suprascapular nerve (C5 and C6)
A - Infraspinatus
What are the origin and insertion sites for muscle A?
Origin - Supraspinous fossa of scapula (medial 2/3rds) and deep fascia covering the muscle
Insertion - Greater tubercle of humerus (most superior facet)
A - Supraspinatus
Name muscle A
A - Deltoid
What are the origin and insertion sites for muscle A?
Origin - Crest of the spine of scapula (inferior edge), acromion (lateral margin), anterior border of lateral 1/3rd of clavicle
Insertion - Deltoid tuberosity of humerus
A - Deltoid
What is the innervation of muscle A?
Anterior rami of C3 and C4
Braches of dorsal scapular nerve
Name muscle A
A - Supraspinatus
What are the origin and insertion sites for muscle A?
Origin - Superior nuchal line, external occipital protuberance, ligamentum nuchae (medial margin), spinous processes C7-T12 and related supraspinous ligaments
Insertion - Crest of the spine of the scapula, acromion, posterior border of lateral 1/3rd of clavicle
A - Trapezius
