Practical 2

Masseter

Action: Elevates mandible

Synergist: Temporalis

Antagonist: Digastric

Temporalis

Action: Elevates mandible

Synergist: masseter

Antagonist: digastric

Digastric

Action: Elevates hyoid bone

Synergist: sternothyroid

Antagonist: masseter

Sternohyoid

Action: Depresses hyoid bone

Synergist: sternothryroid

Antagonist: stylohyoid

Sternothyroid

Action: Depresses thyroid cartilage

Synergist: Sternothyroid

Antagonist: Stylohyoid

Thyrohyoid

Action: Depresses hyoid bone

Synergist: Sternothyroid

Sternocleidomastoid

Action: Rotates head

Clavo-trapezeius

Action: Elevates clavicle

Synergist: Levator scapula

Acromio-trapezius

Action: Abducts scapula

Synergist: Levator scapula

Spinio-trapezius

Action: Depresses scapula

Synergist: Levator scapula

Pectoralis Minor

Action: Depresses scapula

Synergist: Serratus anterior

Antagonist: Trapezius

Levator scapulae

Action: Elevates scapula

Synergist: Clavo-trapezius

Antagonist: Spino-trapezius

Serratus anterior

Action: Anterior rotation of scapula

Synergist: Pectoralis minor

Antagonist: Trapezius

Rhomboideus

Action: Abducts scapula

Synergist: latissimus dorsi

Antagonist: serratus anterior

Pectoralis major

Action: Abducts humerus

Synergist: Latissimus dorsi

Antagonist: Latissimus dorsi

Clavo-deltoid

Action: Abducts humerus

Synergist: Infraspinatus

Antagonist: Latissimus dorsi

Acromio-deltoid

Action: Abducts humerus

Synergist: Infraspinatus

Antagonist: Latissimus dorsi

Spino-deltoid

Action: Extends humerus

Synergist: Infraspinatus

Antagonist: Latissimus dorsi

Infraspinatus

Action: Lateral rotation of humerus

Synergist: Spino-deltoid

Antagonist: Subscapularis

Supraspinatus

Action: Abducts humerus

Synergist: Clavo-deltoid

Antagonist: Infraspinatus

Subscapularis

Action: Medial Rotation of humerus

Synergist: Teres major

Antagonist: Infraspinatus

Latissimus Dorsi

Action: Abducts humerus

Synergist: Teres major

Antagonist: Deltoid

Teres major

Action: Medial rotation of humerus

Synergist: Latissimus dorsi

Antagonist: Infraspinatus

Triceps Brachii

Action: Extends forearm

Synergist: Anconeus

Antagonist: Biceps brachii

Triceps Brachii

Action: Extends forearm

Synergist: Anconeus

Antagonist: Biceps brachii

Triceps Brachii

Action: Extends forearm

Synergist: Anconeus

Antagonist: Biceps brachii

Biceps Brachii

Action: Flexes Forearm

Synergist: Brachialis

Antagonist: Triceps brachii

Brachialis

Action: Flexes forearm

Synergist: Biceps brachii

Antagonist: Triceps brachii

Brachioradialis

Action: Flexes Forearm

Synergist: Biceps Brachii

Antagonist: Triceps Brachii

Pronator teres

Action: Pronation

Synergist:

Antagonist: Supinator

Supinator

Action: Supination

Synergist:

Antagonist: Pronator teres

Extensor Carpi radialus longus

Action: Extends wrist

Synergist: Extensor Carpi Ulnaris

Antagonist: Flexor Carpi radialis

Extensor Carpi Radialis Brevis

Action: Extends wrist

Synergist: Extensor Carpi Ulnaris

Antagonist: Flexor carpi radialis

Extensor digitorum

Action: Extends digits II-V

Synergist: Extensor digitimini

Antagonist: Flexor digitorum

Extensor Digiti Minimi

Action: Extends digit V

Synergist: Extensor digitorum

Extensor Carpi Ulnaris

Action: Extends wrist

Synergist: Extensor Carpi Radialis

Antagonist: Flexor Carpi Ulnaris

Flexor Carpi Radialis

Action: Flexes wrist

Synergist: Flexor Carpi Ulnaris

Antagonist: Extensor Carpi Radialis

Palmaris Longus

Action: Flexes wrist

Synergist: Flexor Carpi Radialis

Antagonist: Extensor Carpi Radialis

Flexor Carpi Ulnaris (2 heads in cats)

Action: Flexes wrist

Synergist: Flexor Carpi Radialis

Antagonist: Extensor Carpi Ulnaris

Flexor Digitorum superficialis

Action: Flexes middle phalanges II-V

Synergist: Flexor Digitorum Profounds

Antagonist: Extensor digitorum

Flexor Digitorum Profounds

Action: Flexes distal phalanges II-V

Synergist: Flexor Digitorum superficialis

Antagonist: Extensor digitorum