General anatomy Myology Flashcards
What muscles make up the Rotator Cuff?
SITS- Supraspinatus, Infraspinatus, Teres Minor, Subscapularis
Supraspinatus Action
Infraspinatus Action
S: ABduction
I: external rotation
Supraspinatus & Infraspinatus: Nerve S., Blood S., Origin/insertion
N: Suprascapular
B.S: Suprascapular
O.I: fossa of scapula/ greater tubercle of humerus
Teres minor: Nerve, Blood S., O/I, Action
B.S: scapular circumflex
N: Axillary
A: external rot.
O.I: lat. border dorsal scapula/ greater tubercle of humerus
Subscapular: Nerve, Blood, O/I, Action
N: subscapular
B: lat. thoracic, subscapular
A: Internal rot.
O.I: subscapular fossa of scapula/ lesser tubercle of humerus
Latissimus Dorsi: Nerve, Blood, Action
N: thoracodorsal
B: descending scapular
A: extension, int. rot. of arm
Trapezius: Nerve, Blood, Action
N: Spinal acc.
B: descending scapular
A: Adduct scapula
Rhomboid: nerve, blood, action, O/I
N: Dorsal scapular
B: descending scapular
A: scapular retraction
O/I: SP of C7 & T1 (minor); SP of T2-T5 (major)/ Scapula (both)
Serratus Ant.: Nerve, Blood, Action
N: long thoracic
B: descending scapular
A: adheres scapula to chest wall
Deltoid: Nerve, Blood, Action, O/I
N: descending scap
B: Axillary
A: ABduction of arm
O/I: trap, clavicle, acromion, spine of scapula/ deltoid tuberosity of humerus
Teres Major: Nerve, Blood, Action
N: subscapular
B: descending scap
A: ext. med. rot. ADDucts arm
Pec. Major: Nerve, Blood, Action
N: medial pectoral
B: descending scap
A: draws sacpula forward
what muscles make up the post. compartment of the Arm? Nerve, Blood, Action, O/I
Triceps & Anconeus N: Radial B: Brachial A: extension O/I: olecranon process of the ulna
What muscles make up the Ant. compartment of the Arm?
Biceps brachaii brachialis brachioradialis coracobrachialis pronator teres
what nerve supplies the Biceps Brachii, brachialis, coracobrachialis? Brachioradialis? Pronator Teres?
Musculocutaneous
Radial
Median
What is Blood supply of Biceps Brachii, brachialis, coracobrachialis, Brachioradialis? Pronator Teres?
Brachial
Ulnar
Common action of Biceps Brachii, brachialis, coracobrachialis?
flexes elbow
O/I of biceps brachii?
Short head: O: Coracoid process
Long head: O: supraglenoid tubercle of scapula
I: radial tuberosity
Forearm Ant. Compartment muscles
- Biceps brachii
- flex. radialis
- flex carpi ulnaris
- flex dig. prof.
- pronator teres
- flex pollicis long
- palmaris longus
Nerve supply of ant. comp. forearm:
- Biceps brachii
- flex. radialis
- flex carpi ulnaris
- flex dig. prof.
- pronator teres
- flex pollicis long
- palmaris longus
- musculocutaneous
2,5,6,7: median - ulnar
- 1/2 median, 1/2 ulnar
Blood supply of ant. comp. forearm:
- Biceps brachii
- flex. radialis
- flex carpi ulnaris
- flex dig. prof.
- pronator teres
- flex pollicis long
- palmaris longus
Ulnar
Common action of ant. comp. forearm:.
flexion
post. compartment forearm muscles?
- Ext. carpi radialis longus
- brevis
- ext. carpi ulnaris
Nerve supply post. compartment forearm muscles?
- Ext. carpi radialis longus
- brevis
- ext. carpi ulnaris
1,2: radial
3. post. interosseus
Blood supply post. compartment forearm muscles?
- Ext. carpi radialis longus
- brevis
- ext. carpi ulnaris
Ulnar
Action of post. compartment forearm muscles?
- Ext. carpi radialis longus
- brevis
- ext. carpi ulnaris
1,2: extends & ABducts wrist
3: extends 7 ADDucts wrist