Origin
The supraglenoid tubercle
long head of the biceps brachii
Deltoid tuberosity of the humerus
Anterior, middle and posterior head of the deltoid.
All extensors of the forearm/wrist are innervated by this nerve and which associated nerve roots
Radial Nerve C6, C7, C8
Prime movers of external/lateral rotation of the GH joint.
2x points for stating the muscle that is a synergist to these two in this motion
Teres Minor and Infraspinatus
Posterior deltoid.
PLT consists of these muscles that insert at or on the bicipital groove.
2x points if you can tell what they aid the Subscapularis in performing
Pectoralis Major, Latissimus Dorsi, Teres Major
Internal/medial rotation
Spinous processes of T2–T5 vertebrae
Rhomboids Major
Latissimus Dorsi insertion point
Floor of bicipital groove
Flexor pollicis longus is innervated by the _________
Median Nerve at C8 and T1
Prime mover of upward rotation of the scapula
Serrates Anterior
Pec Major is innervated by _______________ and ____________ and the roots _____________
medial and lateral pectoral nerve and nerve roots C5, C6, C7, C8, T1
Lateral epicondyle of humerus & lateral border of ulna
Supinator
Extensor expansions of 5th digit only
Extensor Digiti Minimi
Extensor digitorum innervation
Radial Nerve
These two synergist muscles/fibril orientations work in co-contraction to help accomplish upward rotation of the scapula
Upper and Lower Trapezius
Infraspinatus inserts on ________________
The middle facet of the greater tubercle of the humerus.
Lateral Epicondyle of humerus with insertion on the dorsal aspect of the base of the 3rd metacarpal.
Extensor carpi radialis brevis.
Dorsal aspect of the base of the second metacarpal
Extensor carpi radialis longus
Innervation of the Latissimus Dorsi is the _________
Thoracodorsal nerve
All 4 muscles that contribute to scapular elevation.
2x points to differentiate prime movers (2) and Synergists (2).
PM: Upper Trapezius and Levator Scapulae
Synergists: Rhomboids major and minor
This nerve innervates both the infraspinatus and supraspinatus.
Suprascapular nerve
Posterior Surface of the Humerus, inferior to the radial groove.
Medial Head of the triceps brachii.
About 15-20% of people are born without one or both of these muscles that insert at the Palmar aponeurosis & distal flexor retinaculum.
Palmaris longus
Innervating of teres major
Lower subscapular nerve
This muscle aides in supination when hand is in a pronated position and aides in pronation when hand is in a supinated position. Must also give origin and insertion to earn points.
Brachioradialis
O: Proximal 2/3 Lateral supracondylar ridge of the humerus
I: Styloid process of the radius
Cubitail Fossa is outlined by ___________, ___________, and _______________.
Line between medial and lateral epicondyle, pronator teres, and brachioradialis.