Kinesiology Muscle Quizzes

Trapezius

Trapezius Origin

1. Medial 1/3 of superior nuchal line and external occipital protuberance

2. Ligamentum nuchae and spinous process of C7

3. Tips of spinous processes of T1-T12

Trapezius Insertion

1. Lateral 1/3 of the clavicle

2. Acromion and crest of the scapula spine

3. Crest of the scapula spine

Trapezius Action

1. Elevation of scapula

2. Adduction of scapula

3. Upward rotation of scapula

4. Retracts scapula

5. Hyperextension of the neck

Trapezius Innervation

1. Spinal accessory (XI)

2. Nerve branches from C3 to C4

Rhomboid Major and Rhomboid Minor

Rhomboideus Minor Origin

Ligamentum nuchae and spinous processes of C7, T1

Rhomboideus Minor Insertion

Vertebral/ Medial border of the scapula at the root of the spine of the scapula

Rhomboideus Minor Action

Adduction, elevation and downward rotation of the scapula

Rhomboideus Minor Innervation

Dorsal Scapular Nerve (C5)

Rhomboideus Major Origin

Upper thoracic spinous processes

Rhomboideus Major Insertion

Vertebral/ Medial border of the scapula inferior to the spine of the scapula

Rhomboideus Major Action

Adduction, elevation and downward rotation of the scapula

Rhomboideus Major Innervation

Dorsal Scapular Nerve (C5)

Levator Scapulae

Levator Scapulae Origin

Transverse process of upper 4 cervical vertebrae

Levator Scapulae Insertion

Vertebral/ medial border of the scapula from its superior angle to its spine

Levator Scapulae Action

Elevation of the scapula

Levator Scapulae Innervation

Dorsal Scapular Nerve (C5), C3, C4

Serratus Anterior

Serratus anterior Origin

Digitations from the upper 8 ribs about midway between their angles and costal cartilages ribs 1-8 or 9

Serratus anterior Insertion

Entire length of the vertebral border of the scapula and costal surface

Serratus anterior Action

1. Abduction of the scapula beginning at the inferior angle

2. Upward rotation of the scapula beginning at the inferior angle

Serratus anterior Innervation

Long thoracic nerve, C5, C6, C7

Pectoralis Minor

Pectoralis Minor Origin

Ribs 3,4 and 5 close to their cartilages

Pectoralis Minor Insertion

Coracoid process of the scapula

Pectoralis Minor Action

1. Depression of the scapula

2. Downward rotation of the scapula

3. Raises ribs 3,4,5 in forced inspiration with levator scapulae fixing scapula

Pectoralis Minor Innervation

Medial, pectoral nerve, C8, T1

Deltoid Muscle

Deltoid Origin

1. lateral 1/3 of the clavicle (anterior)

2. acromion of the scapula (middle)

3. lower lip of the crest of the spine of the scapula (posterior)

Deltoid insertion

deltoid tuberosity of the humerus

Deltoid Action

1. Abduction of humerus (middle)

2. Flexion, internal, rotation and horizontal adduction of the humerus (anterior)

3. Hyperextension, eternal rotation and horizontal abduction of the humerus (posterior)

Deltoid Innervation

Axillary Nerve, C5, C6

Pectoralis Major

Pectoralis Major Origin

1. Medial ½ of the front of clavicle

2. Anterior surface of the sternum upper 6 costal cartilages and aponeurosis of the external oblique muscle

Pectoralis Major Insertion

1. Lateral lip of the bicipital groove of the humerus

2. Crest of the greater tubercle of the humerus

Pectoralis Major Action

1. Horizontal adduction of the humerus

2. Internal rotation of the humerus

3. Flexion of humerus

Pectoralis Major Innervation

Medial and lateral pectoral nerves C5, C6, C7, C8, T1

Teres Major

Teres Major Origin

Dorsal surface of the scapula near its inferior angle

Teres Major Insertion

1. Medial lip of the bicipital groove of the humerus

2. Crest of the lesser tubercle of humerus

Teres Major Action

1. Internal rotation of the humerus

2. Extension and hyperextension

Teres Major Innervation

Lower subscapular nerve, C5, C6

Biceps brachii

Biceps brachii origin

1. tip of the coracoid process (short head)

2. Supraglenoid tubercle of the scapula (long head)

Biceps brachii insertion

Bicipital tuberosity of the radius

Biceps brachii Action

1. Supination of the forearm and flexion of the elbow joint 

2. Accessory flexor of the shoulder joint 

Biceps brachii Innervation

Musculocutaneous nerve, C5, C6

Brachialis

Brachialis Origin

Front of the distal half of the humerus

Brachialis Insertion

Front of the coronoid process of the ulna

Brachialis Action

Flexion of elbow joint/ forearm (strictly)

Brachialis Innervation

Musculocutaneous nerves, C5, C6

Brachioradialis

Brachioradialis Origin

Upper 2/3 of the lateral supracondylar ridge of the humerus

Brachioradialis Insertion

1. Distal end of the lateral surface of the radius

2. Lateral side of the base of the styloid process of the radius 

Brachioradialis Action

1. Pronation from the fully supinated position to neutral position

2. Supination from fully pronated position to neutral position

3. Flexion of elbow joint

Brachioradialis Innervation

Radial nerve, C6, C7, C8

Palmaris longus 

Palmaris longus origin

1. Common flexor tendon from medial epicondyle of humerus 

Palmaris longus insertion 

Apex of Palmer aponeurosis

Palmaris longus action

Flexion of wrist

Palmaris longus innervation

Median nerve, C7 & C8

Flexor carpi radialis

Flexor carpi radialis origin

Common flexor tendon from medial epicondyle of humerus

Flexor carpi radialis insertion 

Base of 2nd and 3rd metacarpal

Flexor carpi radialis action

1. Flexes wrist in radial direction 

2. Abducts hand (radial deviation)

Flexor carpi radialis innervation 

Median nerve, C7, C8

Flexor carpi ulnaris

Flexor carpi ulnaris origin

1. Common flexor tendon & ulnar head from median border of olecranon & upper 2/3rds of the posterior border of the ulnar 

2. Medial epicondyle of humerus 

3. Olecranon of ulnar

4. Aponeurosis from upper 2/3 of posterior border of ulna

Flexor carpi ulnaris insertion 

Pisiform hook of hamate and base of 5th metacarpal

Flexor carpi ulnaris action

1. Flexes wrist in ulnar direction

2. Adducts hand

Flexor carpi ulnaris innervation

Ulnar nerve, C8, T1