Anatomy Practical 2: Functions, Synergists, & Antagonists

Masseter: function 

Elevates mandible 

Masseter: synergist

Temporalis

Masseter: antagonist

Digastric

Temporalis: function

Elevates mandible 

Temporalis: synergist 

Masseter

Temporalis: antagonist

Digastric

Digastric: Function

Depresses mandible

Digastric: synergist

none

Digastric: antagonist

Masseter

Sternohyoid: Function

Depresses hyoid

Sternohyoid: synergist

Sternothyroid

Sternohyoid: antagonist

Digastric

Clavotrapezius: Function

Elevates scapula

Clavotrapezius: Synergist

Sternocleidomastoid

Clavotrapezius: Antagonist

Sternohyoid

Acromiotrapezius: Function

Retracts scapula

Acromiotrapezius: Synergist

Rhomboideus

Acromiotrapezius: Antagonist

Serratus anterior

Spinotrapezius: Function

Depresses scapula 

Spinotrapezius: Synergist 

Pectoralis minor 

Spinotrapezius: Antagonist

Levator scapulae

Pectoralis minor: Function

Protracts scapula

Pectoralis minor: synergist

Serratus anterior

Pectoralis minor: antagonist

Rhomboideus

Levator scapulae: function

Elevates scapula

Levator scapulae: synergist

Rhomboideus

Levator scapulae: antagonist

Spinotrapezius

Serratus anterior: Function

Protracts scapula

Serratus anterior: Synergist 

Pectoralis minor 

Serratus anterior: Antagonist

Rhomboideus

Rhomboideus: Function

Retracts and elevates scapula

Serratus anterior: Synergist

Acromiotrapezius

Serratus anterior: Antagonist

Serratus anterior

Pectoralis major: function

Adducts humerus 

Pectoralis major: synergist

Clavodeltoid

Pectoralis major: antagonist

Latissimus dorsi

Clavodeltoid: function

Flexes humerus

Clavodeltoid: synergist

Pectoralis major

Clavodeltoid: antagonist 

Latissimus dorsi

Acromiodeltoid: function

Abducts humerus

Acromiodeltoid: synergist

Supraspinatus

Acromiodeltoid: antagonist

Pectoralis major

Spinodeltoid: function

Extends humerus

Spinodeltoid: synergist 

Latissimus dorsi 

Spinodeltoid: antagonist

Pectoralis major

Infraspinatus: function

Laterally rotates humerus

Infraspinatus: synergist

Teres major

Infraspinatus: antagonist

Subscapularis

Supraspinatus: function

Abducts humerus 

Supraspinatus: synergist

Acromiodeltoid

Supraspinatus: antagonist

Pectoralis major

Subscapularis: function

Medially rotates humerus 

Subscapularis: synergist

Teres major

Subscapularis: antagonist 

Infraspinatus 

Latissimus dorsi: function

Extends humerus

Latissimus dorsi: synergist

Teres major

Latissimus dorsi: antagonist

Pectoralis major

Teres major: function

Extends and medially rotates humerus

Teres major: synergist 

Latissimus dorsi 

Teres major: antagonist

Infraspinatus

Triceps brachii: function

Extends forearm

Triceps brachii: synergist

none

Triceps brachii: antagonist

Biceps brachii

Biceps brachii: function

Flexes forearm 

Biceps brachii: synergist

Brachialis

Biceps brachii: antagonist

Triceps brachii

Brachioradialis: function

Flexes forearm

Brachioradialis: synergist

Biceps brachii

Brachioradialis: antagonist

Triceps brachii

Extensor carpi radialis: function

Extends wrist

Extensor carpi radialis: synergist

Extensor carpi ulnaris

Extensor carpi radialis: antagonist

Flexor carpi radialis

Extensor carpi ulnaris: function

Extends wrist

Extensor carpi ulnaris: synergist 

Extensor carpi radialis 

Extensor carpi ulnaris: antagonist

Flexor carpi ulnaris

Flexor carpi radialis: function

Flexes wrist

Flexor carpi radialis: synergist

Palmaris longus

Flexor carpi radialis: antagonist

Extensor carpi radialis

Flexor carpi ulnaris: function

Flexes wrist

Flexor carpi ulnaris: synergist

Palmaris longus

Flexor carpi ulnaris: antagonist

Extensor carpi radialis