UE muscles (with pictures) Flashcards
Give the origin, insertion, action, and innervation of the muscle pictured
- *Trapezius**
- *Innervation (all):** Cranial nerve XI (accessory nerve) & Ventral rami C2-C4
- *I (descending)**
- *Origin**: Occipital bone (sup nuchal line) & Upper Cervical Spinous Processes (SP) (C1-C3)
- *Insertion**: Lateral 1/3 of clavicle
- *Action**: Up rotation scapula, Elevation scapula, Add / Retraction scapula, Ipsilat Lat Flex Cervical Spine, Contra Rot Cervical spine
- *II (descending)**
- *Origin**: Lower Cervical SP (C4-C7) (via nuchal ligament)
- *Insertion**: Acromion
- *Action**: Same as I
III (transverse)
Origin: Upper Thoracic SP (T1-T4)
Insertion: Scapular spine
Action: Add / Retraction scapula
- *IV (ascending)**
- *Origin**: Lower Thoracic SP (T5-T12)
- *Insertion**: Medial scapular spine
- *Action**: Up rotation scapula, Depress scapula, Add / Retraction scapula
Give the origin, insertion, action, and innervation of the muscle pictured
Rhomboid major
Origin: Upper Thoracic SP (T1-T4)
Insertion: Medial border scapula (below scapular spine)
Action: Add / Retraction scapula, Elevate scapula, Down Rotation Scapula
Innervation: Dorsal scapular nerve
Give the origin, insertion, action, and innervation of the muscle pictured
Rhomboid minor
Origin: Lower Cervical SP (C6, C7)
Insertion: Medial border scapula (above scapular spine)
Action: Add / Retraction scapula, Elevate scapula, Down Rotation Scapula
Innervation: Dorsal scapular nerve
Give the origin, insertion, action, and innervation of the muscle pictured
Levator scapulae
Origin: Upper Cervical Transverse processes (TP) (C1-C4)
Insertion: Superior angle scapula
Action: Elevate scapula, Downward Rotation Scapula
Innervation: Dorsal scapular nerve
Give the origin, insertion, action, and innervation of the muscle pictured
Sternocleidomastoid
Origin: Manubrium & Medial 1/3 clavicle
Insertion: Mastoid process, Superior nuchal line
Action: Ipsilat Lat Flex Cervical Spine, Contra Rot Cervical spine Extension (bilateral)
Innervation: Cranial nerve XI (accessory nerve) & Ventral rami C1-C2
Give the origin, insertion, action, and innervation of the muscle pictured
Subclavius
Origin: Superior Surface 1st Rib (chondro-osseous jcn)
Insertion: Inf. surface clavicle (lat 1/3)
Action: Stabilizes clavicle
Innervation: Subclavius Nerve, Direct branches from (C5-6)
Give the origin, insertion, action, and innervation of the muscle pictured
Pectoralis minor
Origin: Ant Surface Ribs 3-5
Insertion: Coracoid process scapula
Action: Ant tipping scapula, Abd / Protraction Scapula, Downward Rotation Scapula, Depression
Innervation: Medial and lateral pectoral nerves
Give the origin, insertion, action, and innervation of the muscle pictured
Serratus anterior
(Superior)
Origin: Lat Surface Ribs 1-5
Insertion: Medial border scapula (Superior angle)
Action: Abd / Protraction Scapula, Down Rotation, Stabilize medial border, Elevation
Innervation: Long thoracic nerve
Inferior
Origin: Lat Surface Ribs 5-9
Insertion: Medial border scapula (Inferior angle)
Action: Abd / Protraction Scapula, Up Rotation, Stabilize medial border, Depression
Innervation: Long thoracic nerve
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Supraspinatus
Origin: Supraspinous fossa
Insertion: Greater tuberosity humerus
Action: Abd GH
Innervation: Suprascapular nerve
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Infraspinatus
Origin: Infraspinous fossa
Insertion: Greater tuberosity humerus
Action: ER GH, Horiz Abduct GH
Innervation: Suprascapular nerve
Give the origin, insertion, action, and innervation of the muscle pictured
Teres minor
Origin: Lateral border scapula
Insertion: Greater tuberosity humerus
Action: ER GH, Horiz Abduct GH
Innervation: Axillary nerve
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Subscapularis
Origin: Subscapular fossa scapula
Insertion: Lesser tuberosity humerus
Action: IR GH
Action: Horiz Adduct GH
Innervation: Upper & Lower Subscapular nerve(s)
Give the origin, insertion, action, and innervation of the muscle pictured
- *Deltoid**
- *Innervation (all):** Axillary nerve
Anterior
Origin: Lateral 1/3 clavicle
Insertion: Deltoid tuberosity humerus
Action: Add GH <60° abd, Abd GH >60° abd, Flex GH, IR GH, Horiz Adduct GH
Middle Deltoid
Origin: Acromion
Insertion: Deltoid tuberosity humerus
Action: Abd GH
Post Deltoid
Origin: Scapular spine
Insertion: Deltoid tuberosity humerus
Action: Add GH (<60° abd), Abd GH (>60° abd), Ext GH, ER GH, Horiz Abduct GH
Give the origin, insertion, action, and innervation of the muscle pictured
Latissimus dorsi
Origin: Lower Thoracic SP (T7-T12)
Insertion: Thoracolumbar fascia, Medial border bicipital groove
Action: Add GH, Ext GH, IR GH, Horiz Abduct GH, Retract Scapula, Down Rotate Scapula, Depress Scapula
Insertion: Thoracodorsal nerve
Give the origin, insertion, action, and innervation of the muscle pictured
Teres major
Origin: Inferior angle scapula
Insertion: Medial border bicipital groove
Action: Add GH, Ext GH, IR GH, Horiz Abduct GH
Innervation: Lower Subscapular
Give the origin, insertion, action, and innervation of the muscle pictured
- *Pectoralis major
(clavicular) **
Origin: Medial ½ clavicle
Insertion: Lateral border bicipital groove
Action: IR GH, Flex GH, Horiz ADD GH, ADD GH if <90, ABD GH if > 90, Med & Lat Pect NN
(sternal)
Origin: Sternum, Ribs 2-6
Insertion: Lateral border bicipital groove
Action: Extend GH if > 30° flex, Flex GH if hyperextend, IR GH, Horz ADD GH, ADD GH, Protract Scapula, Down Rotate Scapula
Innervation: Med & Lat Pect NN
Give the origin, insertion, action, and innervation of the muscle pictured
Coracobrachialis
Origin: Coracoid process scapula
Insertion: Humerus
Action: Flex GH, Add GH, Horz Adduction GH
Innervation: Musculocutaneous n.
Give the origin, insertion, action, and innervation of the muscle pictured
Triceps Brachii Long Head
Origin: Infraglenoid tubercle scapula
Insertion: Olecranon
Action: Ext elbow, Ext GH
Innervation: Radial Nerve
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Triceps brachii
Med head
Origin: Post surf humerus
Insertion: Olecranon
Action: Ext elbow
Innervation: Radial Nerve
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Triceps Brachii
Lateral Head
Origin: Post surf humerus
Insertion: Olecranon
Action: Ext elbow
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Anconeus
Origin: Lateral epicondyle humerus
Insertion: Olecranon
Action: Ext elbow
Innervation: Radial nerve
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Brachialis
Origin: ant humerus
Insertion: Ulnar tuberosity
Action: Flex elbow
Innervation: Musculocutaneous n.
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- *Biceps Brachii:**
- *Innervation (all):** Musculocutaneous n.
Long Head
Origin: Supraglenoid tubercle scapula
Insertion: Radial tuberosity
Action: Flex elbow, Supinate RU, Flex GH
Short Head
Origin: Coracoid process scapula
Insertion: Radial tuberosity
Action: Flex elbow, Supinate RU, Flex GH
Give the origin, insertion, action, and innervation of the muscle pictured
Brachioradialis
Origin: Lat supracondylar ridge humerus
Insertion: Styloid process radius
Action: Flex elbow, pronate/supinate RU
Innervation: Radial nerve
Give the origin, insertion, action, and innervation of the muscle pictured
Extensor carpi radialis longus
Origin: Lateral supracondylar ridge humerus
Insertion: Base 2nd MC
Action: Ext & radial dev wrist
Innervation: Deep Radial nerve
Give the origin, insertion, action, and innervation of the muscle pictured
Extensor carpi radialis brevis
Origin: Lateral epicondyle humerus
Insertion: Base 3rd MC
Action: Ext & radial dev wrist
Innervation: Deep Radial nerve
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Supinator
Origin: Lateral epicondyle humerus, supinator crest ulna
Insertion: Lat Radius
Action: Supinate RU
Innervation: Deep Radial nerve
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Extensor digitorum
Origin: Lateral epicondyle humerus
Insertion: middle & distal phalange 2-5
Action: Ext 2-5 MCP & IPs, Ext wrist
Innervation: Post interosseous
Give the origin, insertion, action, and innervation of the muscle pictured
Extensor digiti minimi
Origin: Lateral epicondyle humerus
Insertion: 5th middle & distal phalange
Action: Ext 5th MCP, PIP, DIP
Innervation: Post interosseous
Give the origin, insertion, action, and innervation of the muscle pictured
Extensor carpi ulnaris
Origin: Lateral epicondyle humerus, Post Ulna
Insertion: Base 5th MC
Action: Ext & ulnar dev wrist
Innervation: Post interosseous
Give the origin, insertion, action, and innervation of the muscle pictured
Abductor pollicis longus
Origin: Post Radius, Post Ulna
Insertion: Base 1st MC
Action: Abd 1st CMC jt
Innervation: Post interosseous
Give the origin, insertion, action, and innervation of the muscle pictured
Extensor pollicis brevis
Origin: Post Radius
Insertion: Base 1st proximal phalanx
Action: Ext 1st CMC & MCP
Innervation: Post interosseous
Give the origin, insertion, action, and innervation of the muscle pictured
Extensor pollicis longus
Origin: Post Ulna
Insertion: Base 1st distal phalanx
Action: Ext 1st CMC, MCP & IP
Innervation: Post interosseous
Give the origin, insertion, action, and innervation of the muscle pictured
Extensor indicis
Origin: Post Ulna
Insertion: 2nd mid and distal phalanges
Action: Ext 2nd MCP, PIP, DIP, Ext wrist
Innervation: Post interosseous
Give the origin, insertion, action, and innervation of the muscle pictured
Pronator teres
Origin: Medial epicondyle humerus, Coronoid process ulna
Insertion: Lateral surface radius
Action: Pronate RU
Innervation: Median nerve
Give the origin, insertion, action, and innervation of the muscle pictured
Flexor digitorum superficialis
Origin: Medial epicondyle humerus, Coronoid process ulna
Insertion: middle phalanges 2-5
Action: Flex 2-5 MCP + PIP, Flex wrist
Innervation: Median nerve
Give the origin, insertion, action, and innervation of the muscle pictured
Flexor carpi radialis
Origin: Medial epicondyle humerus
Insertion: Base 2nd MC
Action: Flex wrist, Radial dev wrist
Innervation: Median nerve
Give the origin, insertion, action, and innervation of the muscle pictured
Flexor carpi ulnaris
Origin: Medial epicondyle humerus, Olecranon
Insertion: Pisiform, Hamate
Action: Flex wrist, Ulnar dev wrist
Innervation: Ulnar nerve
Give the origin, insertion, action, and innervation of the muscle pictured
Palmaris longus
Origin: Medial epicondyle humerus
Insertion: Palmar aponeurosis
Action: Flex wrist
Innervation: Median nerve
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Flexor digitorum profundus
Origin: Ant Ulna
Insertion: Distal phalanges 2-5
Action: Flex wrist, Flex MCP, PIP & DIP 2-5,
Innervation Digits 2+3: Ant interosseous
Innervation Digits 4+5: Ulnar nerve
Give the origin, insertion, action, and innervation of the muscle pictured
Flexor pollicis longus
Origin: Anterior Radius
Insertion: Distal 1st phalanx
Action: Flex 1st CMC, MCP, IP, Flex wrist
Innervation: Ant interosseous
Give the origin, insertion, action, and innervation of the muscle pictured
Pronator quadratus
Origin: Distal ant surface ulna
Insertion: Distal ant surface radius
Action: Pronate RU
Innervation: Ant interosseous
Give the origin, insertion, action, and innervation of the muscle pictured
Lumbricals (1-4)
Origin: tendons of flexor digitorum profundus
Insertion: Dorsal digital expansions 2-5
Actions: Flex MCP, Extend IP
Innervation 1st & 2nd lumbricals: Median nerve
Innervation 3rd & 4th lumbricals: Deep Ulnar nerve
Give the origin, insertion, action, and innervation of the muscle pictured
Dorsal interossei (1-4)
Origin: first through fifth metacarpals
Insertion: Base of the 2nd, 3rd, 4th proximal phalange
Action: Abduct 2-4 MCP
Innervation: Deep Ulnar nerve
Give the origin, insertion, action, and innervation of the muscle pictured
Palmar interossei (1-3)
Origin First interosseus: ulnar side of the second metacarpal
Origin Second interosseus: radial side of the fourth metacarpal
Origin Third interosseus: radial side of the fifth metacarpal
Insertion: Base of the (associated) 2nd, 4th & 5th proximal phalange
Action: Adduct 2, 4 & 5 MCP
Innervation: Deep Ulnar nerve
Give the origin, insertion, action, and innervation of the muscle pictured
Abductor pollicis brevis
Origin: Flexor retinaculum
Insertion: Base of 1st proximal phalanx
Action: Abduct thumb
Innervation: Recurrent Median
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Adductor pollicis:
Origin Adductor pollicis Transverse: 3rd MC
Origin adductor pollicis oblique: 2nd MC
Insertion: Base 1st proximal phalanx
Action: Adduct thumb
Innervation: Deep Ulnar nerve
Give the origin, insertion, action, and innervation of the muscle pictured
Flexor pollicis brevis
Origin: Flexor retinaculum
Insertion: Base 1st proximal phalanx
Action: Flex thumb
Innervation: Recurrent median
Give the origin, insertion, action, and innervation of the muscle pictured
Opponens pollicis
Origin: Trapezium
Insertion: 1st MC
Action: Opposition of thumb
Innervation: Recurrent median
Give the origin, insertion, action, and innervation of the muscle pictured
Abductor digiti minimi
Origin: Pisiform
Insertion: Base of 5th proximal phalanx
Action: Abduct 5th MCP)
Innervation: Deep Ulnar nerve
Give the origin, insertion, action, and innervation of the muscle pictured
Flexor digiti minimi
Origin: Hamate (Hook)
Insertion: Base of 5th proximal phalanx
Action: Flex 5th MCP
Innervation: Deep Ulnar nerve
Give the origin, insertion, action, and innervation of the muscle pictured
Opponens digiti minimi
Origin: Hamate (Hook)
Insertion: 5th MC
Action: Opposition of 5th digit (MC)
Innervation: Deep Ulnar nerve
Give the origin, insertion, action, and innervation of the muscle pictured
Palmaris brevis
Origin: Palmar aponeurosis
Insertion: Skin of hypothenar eminence
Action: Tenses skin of palm
Innervation: Superficial Ulnar
