Muscles Exam 1 Flashcards
Pectoralis Major
Proximal attachment
Medial clavicle, sternum, and superior ribs
Pectoralis Minor
Proximal attachment
Ribs 3-5
Subclavius
Proximal attachment
1st rib
Serratus Anterior
Proximal attachment
Lateral superior ribs
Trapezius
Proximal attachment
Occipital protuberance, spinous processes of C7-T12
Latissimus Dorsi
Proximal attachment
Lower thoracic and lumbar vertebra, posterior pelvis
Levator Scapulae
Proximal attachment
Upper cervical vertebra
Rhomboids
Proximal attachment
Lower cervical and upper thoracic vertebra
Deltoid
Proximal attachment
Lateral clavicle, acromion, spine of scapula
Suprapinatus
Proximal attachment
Supraspinatus fossa of the scapula
Infraspinatus
Proximal attachment
Infraspinatus fossa of the scapula
Teres Minor
Proximal attachment
lateral angle of the scapula
Teres Major
Proximal attachment
Ineferior angle of the scapula
Subscapularis
Proximal attachment
Subscapularis fossa of the scapula
Biceps Brachii
Proximal attachment
Coracoid process of the scapula, supraglenoid tubercle of the scapula
Coracobrachialis
Proximal attachment
coracoid process of the scapula
Brachialis
Proximal attachment
Midshaft of the humerus
Triceps brachii
Proximal Attachments
Long head: infraglenoid tubercle of the scapula
Lateral head: humorous superior to the radial groove
Short head: humerus inferior to the radial groove
Pectoralis Major
Distal attachment
Greater tubercle of the humerus
Pectoralis Minor
Distal attachment
Coracoid process of the scapula
Subclavius
Distal attachment
Inferior surface of the middle clavicle
Serratus anterior
Distal attachment
Medial border of the scapula
Trapezius
Distal attachment
Lateral clavicle, acromion, spine of the scapula
Lattissimus Dorsi
Distal attachment
Lesser tubercle
Levator Scapulae
Distal attachment
Superior medial scapula
Rhomboids
Distal attachment
Medial border of the scapula
Deltoid
Distal attachment
Deltoid tuberosity of the humerus
Supraspinatus
Distal attachment
greater tubercle of the humerus
Infraspinatus
Distal attachment
greater tubercle of the humerus
teres minor
Distal attachment
greater tubercle of the humerus
teres major
Distal attachment
lesser tubercle of the humerus
Subscapularis
Distal attachment
lesser tubercle of the humerus
biceps brachii
Distal attachment
tuberosity of the radius and bicipital aponeurosis
coracobrachialis
Distal attachment
mid shaft of the humerus
brachialis
Distal attachment
Coronoid process of the ulna
Triceps brachii
Distal attachment
olecranon of ulna
Pectoralis Major
Innervation
medial and lateral pectoral N
C5, 6, 7, 8, T1
Pectoralis Minor
Innervation
medial pectoral N
C8, T1
Subclavious
Innervation
Nerve to the subclavious
C5, 6
Serratus anterior
Innervation
Long thoracic N
C5, 6, 7
Trapezius
Innervation
Cranial N 11
Spinal accessory N
Lattissumus Dorsi
Innervation
Thoracodorsal N
C6, 7, 8
Levator Scapulae
Innervation
Thoracodorsal N
C6, 7, 8
Rhomboids
Innervation
Dorsal Scapular N
C4, 5
Deltoid
Innervation
Axillary N
C5, 6
Supraspinatus
Innervation
Suprascapular N
C4, 5, 6
Infraspinatus
Innervation
Suprascapular N
C5, 6
Teres minor
Innervation
Axillary N
C5, 6
Teres Major
Innervation
Lower subscapular N
C5, 6
Subscapularis
Innervation
Upper and lower sub scapular N
C5, 6
Biceps Brachii
Innervation
Musculocutaneus N
C5, 6, 7
Coracobrachialis
Innervation
Musculocutaneous N
C5, 6, 7
Brachialis
Innervation
Musculocutaneous N
C5, 6, 7
Radial N
C5, 7
Triceps Brachii
Innervation
Radial N
C6, 7, 8
Pectoralis Major
Action
Flexion, adduction, internal rotation
from a fully flexed position it will extend back
Pectoralis Minor
Action
Protraction, depression, rotate to depress
Subclavious
Action
Anchors and depresses the clavicle, depresses scapula
Serratus anterior
Action
Protraction, depression, rotate to elevate Scapula
Trapezius
Action
Upper: elevation, retraction, rotate to elevate
Lower: depression, retraction, rotate to elevate
Neck
Both: EX
One side: ABD, ADD, rotation
Latissiums Dorsi
Action
extension, adduction, internal rotate scapula
Levator scapulae
Action
Elevation, retraction, rotate to depress
Neck:
Both: EX
One Side: ABD, ADD, rotation
Rhomboids
Action
Retraction, elevation, rotate to depress
Deltoid
Action
Anterior: FL, IR
Middle: ABD
Posterior: EX, ER
(will ADD when inferior to the GH joint)
Supraspinatus
Action
Stabilizes the glenohumeral joint, ABD
Infraspinatus
Action
Stabilizes the glenohumeral joint, External rotation
Teres minor
Action
Stabilizes the glenohumeral joint, External rotation
Teres major
Action
adduction and internal rotation
Subscapularis
Action
Stabilizes the glenohumeral joint, internal rotation
Biceps brachii
Action
Radioulnar: supination
Elbow: FL
shoulder: FL, ABD
Coracobrachialis
Action
FL, ADD, IR at the shoulder
Brachialis
Action
Elbow flexion
Triceps Brachii
Action
Elbow extension
extension, resists dislocation at the shoulder joint
Aconeus
Proximal Attachment
Lateral epicondyle of the humerus
Pronator teres
Proximal Attachment
Medial epicondyle of humerus, coronoid process of the ulna
Flexor carpi radialis
Proximal Attachment
Medial epicondyle of the humerus
Palmaris Longus
Proximal Attachment
Medial epicondyle of humerus
Flexor carpi ulnaris
Proximal Attachment
Medial epicondyle of humerus
Flexor digitorum superficialis
Proximal Attachment
Medial epicondyle of humerus, ulna, and proximal radius
Flexor digitorum profundus
Proximal Attachment
Proximal ulna and interosseous membrane
Flexor pollicus longus
Proximal Attachment
Radius and interosseous membrane
Pronator quadratus
Origin
Distal ulna
Brachioradialis
Proximal Attachment
Supracondylar ridge on the humerus
Extensor carpi radialis longus
Proximal Attachment
Lateral supraepicondylar ridge of the humerus
Extensor carpi radialis brevis
Proximal Attachment
Lateral epicondyle of humerus
Extensor digitorum
Proximal Attachment
Lateral epicondyle of humerus
Extensor digiti minimi
Proximal Attachment
Lateral epicondyle of humerus
Supinator
Proximal Attachment
Lateral epicondyle of the humerus and proximal ulna
Extensor indicis
Proximal Attachment
interosseous membrane
Abductor pollicus longus
Proximal Attachment
interosseous membrane, radius, ulna
Extensor pollicis longus
Proximal Attachment
interosseous membrane
Extensor pollicis brevis
Proximal Attachment
interosseous membrane
Aconeous
Distal attachment
olecranon
Pronator teres
Distal attachment
Middle of radius
Flexor carpi radialis
Distal attachment
Base of 2nd metacarpal
Palmaris longus
Distal attachment
Palmar aponeurosis
Flexor carpi ulnaris
Distal attachment
Pisiform, hook of hamate, 5th metacarpal
Flexor digitorum superficialis
Distal attachment
Middle phalanges of digits 2-5
Flexor digitorum profundus
Distal attachment
Distal phalanges of digits 2-5
Flexor pollicus longus
Distal attachment
Distal phalanx of 1st digit
Pronator quadratus
Insertion
Distal radius
Brachioradialis
Distal attachment
Radial styloid process
Extensor carpi radialis longus
Distal attachment
Dorsal base of 2nd metacarpal
Extensor carpi radialis brevis
Distal attachment
Dorsal base of 3rd metacarpal
Extensor digitorum
Distal attachment
Extensor expansions of digit 2-5
Extensor digiti minimi
Distal attachment
Extensor expansion of 5th digit
Extensor carpi ulnaris
Distal attachment
Dorsal base of 5th metacarpal
Supinator
Distal attachment
Radial shaft
Extensor indicis
Distal attachment
Extensor expansion of 2nd digit
Abductor pollicis longus
Distal attachment
Lateral base of 1st metacarpal
Extensor pollicis longus
Distal attachment
Distal phalanx of thumb
Extensor pollicis brevis
Distal attachment
Dorsal proximal phalanx of thumb
Opponens pollicis
Distal attachment
1st metacarpal
Abductor pollicis brevis
Distal attachment
proximal phalanx of thumb
Flexor pollicis brevis
Distal attachment
proximal phalanx of thumb
Adductor pollicis
Distal attachment
proximal phalanx of thumb
Abductor digiti minimi
Distal attachment
Proximal phalanx of digit 5
Flexor digiti minimi
Distal attachment
proximal phalanx of digit 5
Opponens Digiti Minimi
Distal attachment
5th metacarpal
Lumbricals
Distal attachment
Lateral extensor expansions of digits 2-5
Dorsal interossei
Distal attachment
Extensor expansions of 2nd and 4th digits
Palmar interossei
Distal attachment
Extensor expansion of 2nd, 4th, and 5th digits
Opponens pollicis
Proximal attachment
Flexor retinaculum and lateral carpals
Abductor pollicis brevis
Proximal attachment
Flexor retinaculum of lateral carpals
Flexor pollicis brevis
Proximal attachment
Flexor retinaculum of lateral carpals
Adductor pollicis
Proximal attachment
Transverse head: Base of 3rd metacarpal
Oblique head: base of 2nd and 3rd metacarpals,
Abductor digiti minimi
Proximal attachment
Pisiform
Flexor digiti minimi
Proximal attachment
Hook of hamate and flexor retinaculum
Opponens digiti minimi
Proximal attachment
Hook of hamate and flexor retinaculum
Lumbricals
Proximal attachment
Tendons of flexor digitorum profundous
Dorsal interossei
Proximal attachment
Metacarpals
Palmar interossei
Proximal attachment
Metacarpals
Anconeous
Innervation
Radial
C8, T1
Pronator teres
Innervation
Median C6, C7
Flexor carpi radialis
Innervation
Median C6, C7
Palmaris longus
Innervation
Median C7, 8
Flexor carpi ulnaris
Innervation
Ulnar C7, C8
Flexor digitorum superficialis
Innervation
Median C7, 8, T1
Flexor digitorum profundus
Innervation
Media C8, T1
Ulnar C8, T1
Flexor pollicis longus
Innervation
Median C8, T1
Pronator quadratus
Innervation
Median C8, T1
brachioradialis
Innervation
radial C5,6,7
Extensor carpi radialis longus
Innervation
Radial C6, C7
Extensor carpi radialis brevis
Innervation
Radial C7, C8
Extensor digitorum
Innervation
Radial C7, C8
Extensor digiti minimi
Innervation
Radial C7, C8
Extensor carpi ulnaris
Innervation
Radial C7, C8
Supinator
Innervation
Radial C7, C8
Extensor indicis
Innervation
Radial C7, C8
Abductor pollicis longus
Innervation
Radial C7, C8
Extensor pollicis longus
Innervation
Radial C7, C8
Extensor pollicis brevis
Innervation
Radial C7, C8
Opponen pollicis
Innervation
Median C8, T1
Abductor pollicis brevis
Innervation
Median C8, T1
Flexor pollicis brevis
Innervation
Median C8, T1
Ulnar C8, T1
Adductor pollicis
Innervation
Ulnar C8, T1
Abductor digit minimi
Innervation
Ulnar C8, T1
Flexor digiti minimi
Innervation
Ulnar C8, T1
Opponens digiti minmi
Innervation
Ulnar C8, T1
Lumbricals
Innervation
Median C8, T1
Ulnar C8, T1
Dorsal interossei
Innervation
Ulnar C8, T1
Palmar interossei
Innervation
Ulnar C8, T1
Anconeous
Action
Assists triceps in EX, stabilizes elbow
Pronator teres
Action
Radioulnar: pronation
Elbow: FL
Flexor carpi radialis
Action
Elbow: FL
Wrist: FL, ABD
Palmaris longus
Action
Elbow: FL
Wrist: FL,
Flexor carpi ulnaris
Action
Elbow: FL
Wrist: FL, ADD
Flexor digitorum superficialis
Action
Elbow: FL
PIP: FL (digits 2-5)
MCP: FL (digits 2-5)
Wrist: FL
Flexor digitorum profundus
Action
Wrist: Fl
DIP: FL (digits 2-5)
MCP: FL (digits 2-5)
Flexor pollicis longus
Action
Wrist: FL, ABD
Carpometacarpal: FL (1st digit)
MCP: FL (1st digit)
IP: FL (1st digit)
pronator quadratus
Action
Radioulnar: pronation
brachioradalis
Action
Radioulnar: supination
Elbow: FL
extensor carpi radialis longus
Action
Elbow: EX
Wrist: EX, ABD
extensor carpi radialis brevis
Action
Elbow: EX
Wrist: EX, ABD
extensor digitorum
Action
Elbow: EX
Wrist: EX
MCP: EX (Digits 2-5)
extensor digiti minimi
Action
Elbow: EX
Wrist: EX, ADD
MCP: EX (5th digit)
extensor carpi ulnaris
Action
Elbow: EX
Wrist: EX, ADD
supinator
Action
Radioulnar supination
Extensor indicis
Action
MCP: EX (2nd digit)
Wrist: EX, ABD
Abductor pollicis longus
Action
Thumb: ABD
Wrist: EX, ABD
extensor pollicis longus
Action
Thumb: EX
Wrist: EX, ABD
extensor pollicis brevis
Action
Thumb: EX
Wrist: EX, ABD
opponens pollicis
Action
Opposition of thumb
abductor pollicis brevis
Action
ABD thumb
flexor pollicis brevis
Action
Thumb: FL, ADD
adductor pollicis
Action
ADD thumb
abductor digit minimi
Action
ABD of 5th digit, FL at PIP
flexor digiti minimi
Action
FL at PIP (5th digit)
opponens digiti minimi
Action
Opposes 5th digit
lumbricals
Action
MCP: FL
PIP: EX
DIP: EX
dorsal interossei
Action
Digits 2-4: ABD
MCP: FL
PIP: EX
DIP: EX
palmar interossei
Action
2nd, 4th, 5th digits: ADD
MCP: FL
PIP: EX
DIP: EX