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Muscle Origins, Insertions, Actions, & Innervations (Arm, Elbow, Forearm, and Hand)

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gelaneyu's version from 2016-02-17 16:24

Elbow Muscles Innervated by the Musculocutaneous Nerve

Question Answer Column 3 Column 4 Column 5
Biceps BrachiLong head, supraglenoid tubercle of scapula;
Short head, coracoid process of scapula
Radial tuberosityElbow flexion, forearm supinationMusculocutaneous Nerve
BrachialisLower half of anterior humerusUlnar tuberosityElbow flexionMusculocutaneous Nerve
memorize
Coracobrachialis: Lower half of humerus: Middle of Humerus: Shoulder flexion; ADDucts shoulder: Musculocutaneous Nerve

Elbow Muscles Innervated by the Radial Nerve

Question Answer Column 3 Column 4 Column 5
BrachioradialisElbow flexionRadial Nerve C5, C6
TricepsLong head- Infraglenoid tubercle;
Lateral head- Posterior surface of humerus;
Medial head- Posterior surface of humerus,
Olecranon processElbow extensionRadial Nerve C6, C7
AnconeusAssists elbow extensionRadial Nerve C6, C7
SupinatorForearm supinationRadial Nerve C6
memorize

Wrist Muscles Innervated by the Radial Nerve

Question Answer Column 3 Column 4 Column 5
Extensor Carpi Radialis LongusWrist extension,ABDucts handRadial Nerve C6, C7
Extensor Carpi Radialis BrevisWrist extension, ABDucts handRadial Nerve C6, C7
Extensor Carpi UlnarisWrist extension, ADDucts handRadial Nerve C6, C7, C8
memorize

Finger Muscles Innervated by the Radial Nerve

Question Answer Column 3 Column 4 Column 5
Extensor Digitorumextends fingers
extends wrist
Radial Nerve C6, C7, C8
Extensor Indicishelps to extend index fingerRadial Nerve C6, C7, C8
Extensor Digiti Minimiextends digiti minimi
extends wrist
Radial Nerve C6, C7,C8
Abductor Pollicis Longusextends thumb,
ABDucts thumb
Radial Nerve C6, C7
Extensor Pollicis BrevisExtends thumbRadial Nerve C6, C7
Extensor Pollicis Longusextends thumbRadial Nerve C6, C7, C8
memorize

Elbow Muscles Innervated by the Medial Nerve

Question Answer Column 3 Column 4 Column 5
Pronator TeresForearm pronation
Flexes elbow
Median Nerve
Pronator QuadratusForearm pronationMedian Nerve
memorize

Wrist Muscles Innervated by the Medial Nerve

Question Answer Column 3 Column 4 Column 5
Flexor Carpi RadialisWrist flexion
ABDucts hand
Median Nerve
Palmaris LongusFlexes wristMedian Nerve
memorize

Finger Muscles Innervated by the Medial Nerve

Question Answer Column 3 Column 4 Column 5
Flexor Digitorum Superficialisflexes wrist
flexes digits 2-5
Median Nerve
Flexor Pollicis LongusFlexes wrist
Flexes digit 1 (thumb)
Median Nerve
Flexor Pollicis Brevisflexes thumbMedian Nerve
Opponens PollicisABDucts thumb
flexes thumb
rotates thumb
Median nerve
Abductor pollicis brevisABDucts thumbMedian nerve
memorize

Elbow Muscles Innervated by the Ulnar Nerve

Question Answer Column 3 Column 4 Column 5
Flexor Carpi UlnarisWrist flexion
ADDuct hand
Ulnar Nerve
memorize

Finger Muscles Innervated by the Ulnar Nerve

Question Answer Column 3 Column 4 Column 5
Flexor Digitorum Profundusflexes digits 2-5
Flexes wrist
Median and Ulnar Nerve C8, T1
Lumbricalsflex the MP joints
extends IP joints
1st & 2nd- Medial 3rd & 4th Ulnar C6, C7, C8
Adductor PollicisAdducts thumbUlnar nerve C8, T1
Dorsel InterosseiABDucts fingersUlnar nerve C8, T1
Palmer InterosseiADDucts fingersUlnar nerve C8, T1
Flexor Digiti Minimi
Brevis
Flexes 5th digitUlnar Nerve C8, T1
Abductor Digiti MinimiABDucts 5th digitUlnar Nerve C8, T1
Opponens Digiti MinimiABDucts 5th digit
Flexes 5th digit
Rotates 5th digit
Ulnar Nerve C8, T1
Palmer BrevisWrinkles skinUlnar nerve C8, T1
memorize

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