Muscle Attachment Action Innervation

Cutaneous trunci attachments

Fascia of axillary region and fascia of trunk

Cutaneous trunci innervation

Lateral thoracic nerve

Cutaneous trunci innervation

Lateral thoracic nerve

Superficial pectoral attachment

Sternum and cranial humerus

Superficial pectoral action

Adduct limbs some Flexion and extension of shoulder

Superficial pectoral innervation

Cranial pectoral nerve

Deep pectoral attachments

Sternum and greater and lesser tubercles

Deep pectoral action

Adduct limb; some Flexion and extension of shoulder

Deep pectoral innervation

Caudal pectoral nerve

Cleidocervicalis attachments

Clavicle / clavicular insertion and dorsal median raphe

Cleidomastoideus attachments

Clavicular insertion and mastoid process of the temporal bone

cleidobrachialis attachments

Clavicular insertion and distal humerus

Brachiocephalicus action

Protract limb and shoulder extension

Brachiocephalicus innervation

Accessory nerve

omotransersarius attachments

Acromion and wing of the atlas

Omotransversarius action

Protract limb

omotransversarius innervation

Accessory nerve

Trapezius attachments

Supraspinous ligament and scapular spine

Trapezius action

Pronate and abduct limb

Trapezius innervation

Accessory nerve

Latissimus dorsi attachments

Thoracic and lumbar vertebrae and Teres major tuberosity

Latissimus dorsi action

Retract limb - Digging actions

Latissimus dorsi innervation

Thoracodorsal nerve

Rhombodieus attachments

Occiput + cervical and thoracic vertebra to the dorsal border of scapula

Rhomboideus action

Elevate the limb

Rhombodieus innervation

Spinal nerves

Serratus ventralis attachments

Cervical vertebra + ribs and serrated face of scapula

Serratus ventralis actions

Protract and retract scapula

Serratus ventralis innervation

Long thoracic nerve

Deltoideus scapular portion attachments

Scapular spine and deltoid tuberosity

Deltodius scapular portion action

Flex humeral joint

Deltodius scapular portion innervation

Axillary nerve

What is the difference in attachment points of the Deltodius scapular portion and the acromial portion

Acromial portion attaches to the Acromion instead of the scapular spine

Triceps long head attachments

Caudal border of scapula and olecranon

What action of the long head of the triceps differs from the other three heads?

Flexion of humeral joint in addition to cubital joint extension

Triceps primary action

Extension of cubital joint

Triceps innervation ( all the same)

Radial nerve

Triceps innervation ( all the same)

Radial nerve

Triceps lateral head attachments

Lateral humerus and olecranon

Triceps accessory head attachments

Neck of humerus and olecranon

Supraspinatus attachments

Supraspinous fossa and greater tubercle

Supraspinatus actions

Shoulder extension and stabilization

Supraspinatus innervation

Suprascapular nerve

infraspinatus attachments

Infraspinous fossa and greater tubercle

Infraspinatus actions

Shoulder extension or Flexion and stabilization

Infraspinatus innervation

Suprascapular nerve

Teres minor attachments

Infraglenoid tubercle and Teres minor tuberosity

Teres minor actions

Shoulder Flexion and stabilization

Teres minor innervation

Axillary nerve

Brachialis attachments

Caudal humerus and radial/ulnar tuberosities

Brachialis actions

Flexion of cubital joint

Brachialis innervation

Musculocutaneous nerve

Subscapularis attachments

Subscapular fossa and lesser tubercle

Subscapularis action

Extension and stabilization of humeral joint

Subscapularis innervation

Subscapular nerve

Teres major attachments

Caudal border of scapula and Teres major tuberosity

Teres major action

Flexion of shoulder

Teres major innervation

Axillary nerve

Biceps brachii attachments

Supraglenoid tubercle and radial/ulnar tuberosities

Biceps brachii action

Flexion of cubital joint and extension of humeral joint

Biceps brachii innervation

Musculocutaneous nerve

Brachioradialis attachmetns

Lateral supercondylar crest

Brachioradialis action

Supination

Brachioradialis innervation

Radial nerve

Extensor carpi radialis attachments

Lateral supracondylar crest

Extensor carpi radialis action

Carpal extension

What nerve innervates the extensor compartment and supinator

Radial nerve

Common digital extensor attachments

Lateral epicondyle and digits

Common digital extensor actions

Carpal and digital extension

Lateral digital extensor attachments

Lateral epicondyle and common digital extensor tendons

Lateral digital extensor actions

Carpal and digital extension

Extensor carpi ulnaris attachments

Lateral epicondyle

Extensor carpi ulnaris action

Carpal extension

Supinator attchments

Lateral epicondyle

Supinator actions

Supination

Pronator Teres attachments

Medial epicondyle

Pronator Teres action

Pronation

Pronator Teres innervation

Median and ulnar nerve

Flexor carpi radialis attachments

Medial epicondyle

Flexor carpi radialis action

Carpal flexion

What nerve innervates the flexor compartment?

Median and ulnar nerves

Superficial digital flexor attachments

Medial epicondyle and P2

Superficial digital flexor action

Carpal and digital flexion

Flexor carpi ulnaris attachments

Medial epicondyle and ulna

Flexor carpi ulnaris action

Carpal flexion

Deep digital flexor attachments

Medial epicondyle, ulna, and radius + P3

Deep digital flexor actions

Carpal and digital Flexion