appendicular muscles Flashcards
Action: Abducts shoulder joint
Origin: Acromial end of clavicle
Insertion: Deltoid tuberosity of the humerus
Deltoid
Action: elevates scapula
Levator scapulae & Rhomboid Major & Rhomboid Minor & Trapezius
Action: stabilizes scapula
Serratus Anterior
Action: Flexes arm at shoulder joint
Origin: Acromial end of scapula
Insertion: Deltoid tuberosity of Humerus
Pectoralis Major
Action: ABDucts scapula
Origin: Acromial end of scapula
Insertion: Deltoid Tuberosity of Humerus
Pectoralis Minor
Action: Abducts arm at shoulder joint
Origin: Supraspinous fossa of scapula
Insertion: greater tubercle of humerus
Supraspinatus
Action: Abducts arm at shoulder joint
Origin: Infraspinous fossa of scapula
Insertion: Greater tubercle of humerus
Infraspinatus
Action: Extends arm at shoulder joint
Origin: Subscapular fossa of scapula
Insertion: Lesser tubercle of Humerus
Teres Major
Action: Laterally rotates arm at shoulder joint
Origin: Lateral Border of scapula
Insertion: Greater tubercle of humerus
Teres Minor
Action: Medially rotates arm at shoulder joint
Origin: Subscapular fossa of scapula
Insertion: lesser tubercle of Humerus
Subscapularis
Action: Extends forearm at elbow joint
Origin: Infraglenoid tubercle of scapula
Insertion: Olecranon process of Ulna
Triceps Brachii Long Head
Action: Extends forearm at elbow joint
Origin: Posterior shaft of Humerus
Insertion: Olecranon process of Ulna
Triceps Brachii Lateral Head
Action: Extends forearm at elbow joint
Origin: Posterior Shaft of Humerus
Insertion: Olecranon process of ulna
Triceps Brachii Medial Head
Action: Extends forearm at shoulder joint
Anconeus
Action: Flexes arm at shoulder joint
Origin: Infraglenoid tubercle of Scapula
Insertion: Radial tuberosity of the Humerus
Biceps Brachii Long head
Action: Flexes arm at shoulder joint
Origin: Coracoid process of the scapula
Insertion: Radial Tuberosity of the Humerus
Biceps Brachii Short Head
Actions: Adducts arm at the shoulder joint
Origin: Coracoid process of the Scapula
Insertion: Middle Medial Shaft of the Humerus
Coracobrachialis
Action: Flexes forearm at the elbow joint
Origin: Distal, anterior surface of the Humerus
Insertion: Coronoid process of Ulna
Brachialis
Action: Flexes forearm at elbow joint
Origin: Distal, anterior surface of the Humerus
Insertion: Coronoid process of Ulna
Brachioradialis
Action: Pronates forearm at the radioulnar joint
Pronator Teres
Action: flexes hand at wrist joint
Flexor Carpi Ulnaris & Flexor Carpi Radialis & Flexor Digitorum Superficialis & Profundus
Action: Weakly flexes hand at wrist joint
Palmaris Longus
Action: Flexes distal phalanx of thumb at IP joint
Flexor Pollicis Longus
Fibrous band of connective tissue that covers the palmar surface of the carpal bones
Flexor Retinaculum
Action: Abducts hands at wrist joint
Extensor carpi radialis Longus & Brevis
Action: Extends distal & middle Phalanges at MP joint
Extensor Digitorum
Action: Extends thumb at MP joint
Extensor Pollicis Longus & Brevis
Adducts hand at wrist joint
Extensor Carpi Ulnaris
Actions: Weakly extends hand at wrist joint
Abductor Pollicis Longus
Action: Supinates forearm at radioulnar joint
Supinator
Fibrous band of connective tissue that covers DORSAL surface of carpal bones
Extensor Retinaculum
Action: Wrinkles forehead
Frontalis
Action: Retracts scalp
Occipitalis
Action: Compresses lips
*kissing
Orbicularis oris
Action: closes eye
Orbicularis oculi
Action: Pulls lower lip Inferiorly
Platysma
Action: Pulls corners of mout superiorly
*smiling
Zygomaticus major
Action: Pulls upper lip, exposing
upper teeth
Zygomaticus minor
Action: holds food between
teeth during chewing
Buccinator
Action:
Origin:
Insertion:
Temporalis
Action: Elevates mandible at jaw
Origin: Parietal bone
Insertion: Coronoid process of Mandible
Masseter
Action: Laterally flexes head to opposite side
Origin: Manubrium of Sternum
Insertion: Mastoid Process if temporal bone
Sternocleidomastoid
Action: Extends head & neck
Origin: Ligamentum Nuchae
Insertion: Occipital bone
Splenius Capitis
Action: Extends head & neck
Origin: Spinous process of thoracic vertebrae
Insertion: Transverse processes of cervical vertebrae
Splenius Cervicis