3/13/2022
GROSS ANATOMY
OF ARM
ARM
1
, 3/13/2022
Muscles of Arm
Surrounded by fascia
Divided into 2 compartments
Anterior flexor compartment
3 muscles
Biceps brachii
Coracobrachialis
Brachialis
Posterior extensor compartment
1 muscle
Triceps brachii
Anterior Flexor Compartment
Biceps brachii
Origin (two heads of origin)
Long head: supraglenoid tubercle
on scapula
Short head: apex of coracoid
process of scapula
Insertion: radial tuberosity of the
radius
Nerve supply: musculocutaneous
nerve
Action: Supinates and flex
forearm
2
GROSS ANATOMY
OF ARM
ARM
1
, 3/13/2022
Muscles of Arm
Surrounded by fascia
Divided into 2 compartments
Anterior flexor compartment
3 muscles
Biceps brachii
Coracobrachialis
Brachialis
Posterior extensor compartment
1 muscle
Triceps brachii
Anterior Flexor Compartment
Biceps brachii
Origin (two heads of origin)
Long head: supraglenoid tubercle
on scapula
Short head: apex of coracoid
process of scapula
Insertion: radial tuberosity of the
radius
Nerve supply: musculocutaneous
nerve
Action: Supinates and flex
forearm
2