1Origin of the biceps brachii
The scapula
2Insertion of the biceps brachii
The radial tuberosity
3Nerve that innervates the biceps brachii
Musculocutaneous nerve
4Action of the biceps brachii
Elbow flexion and forearm supination
5Origin of the deltoid muscle
Clavicle, acromion, and spine of scapula
6Insertion of the deltoid muscle
Deltoid tuberosity of the humerus
7Nerve that innervates the deltoid muscle
Axillary nerve
8Action of the deltoid muscle
Abduction of the shoulder
9Origin of the trapezius muscle
Occipital bone, ligamentum nuchae, and spinous processes of thoracic vertebrae
10Insertion of the trapezius muscle
Clavicle, acromion, and spine of scapula
11Nerve that innervates the trapezius muscle
Accessory nerve (cranial nerve XI)
12Action of the trapezius muscle
Elevates, retracts, and rotates scapula
13Origin of the rectus femoris
Anterior inferior iliac spine
14Insertion of the rectus femoris
Tibial tuberosity via the patellar ligament
15Nerve that innervates the rectus femoris
Femoral nerve
16Action of the rectus femoris
Knee extension and hip flexion
17Origin of the gastrocnemius
Medial and lateral condyles of the femur
18Insertion of the gastrocnemius
Calcaneus via the Achilles tendon
19Nerve that innervates the gastrocnemius
Tibial nerve
20Action of the gastrocnemius
Plantarflexion of the foot and flexion of the knee
21Origin of the pectoralis major
Clavicle, sternum, and cartilage of ribs 1-6
22Insertion of the pectoralis major
Greater tubercle of the humerus
23Nerve that innervates the pectoralis major
Medial and lateral pectoral nerves
24Action of the pectoralis major
Adduction and medial rotation of the humerus
25Origin of the latissimus dorsi
Spinous processes of T7-L5, iliac crest, and lower ribs
26Insertion of the latissimus dorsi
Intertubercular groove of the humerus
27Nerve that innervates the latissimus dorsi
Thoracodorsal nerve
28Action of the latissimus dorsi
Extension, adduction, and medial rotation of the shoulder
29Origin of the sternocleidomastoid
Manubrium of the sternum and medial clavicle
30Insertion of the sternocleidomastoid
Mastoid process of the temporal bone
31Nerve that innervates the sternocleidomastoid
Accessory nerve (cranial nerve XI)
32Action of the sternocleidomastoid
Rotation and flexion of the neck
33Origin of the gluteus maximus
Ilium, sacrum, and coccyx
34Insertion of the gluteus maximus
Gluteal tuberosity of the femur and iliotibial tract
35Nerve that innervates the gluteus maximus
Inferior gluteal nerve
36Action of the gluteus maximus
Hip extension and lateral rotation
37Origin of the hamstrings (biceps femoris, semitendinosus, semimembranosus)
Ischial tuberosity
38Insertion of the hamstrings
Fibula (biceps femoris) and tibia (semitendinosus and semimembranosus)
39Nerve that innervates the hamstrings
Sciatic nerve
40Action of the hamstrings
Knee flexion and hip extension
41Origin of the tibialis anterior
Lateral condyle and upper shaft of tibia
42Insertion of the tibialis anterior
Medial cuneiform and base of the first metatarsal
43Nerve that innervates the tibialis anterior
Deep fibular (peroneal) nerve
44Action of the tibialis anterior
Dorsiflexion and inversion of the foot