Muscle Name Origin Insertion Action Innervation Muscles of ...
[Pages:12]Muscle Name Pectoralis Major Pectoralis Minor
Origin
Medial half of clavicle, front of sternum, costal
cartilage Ribs 2-5
Insertion Muscles of Upper Extremity Crest of greater tubercle (Lateral lip of bicipital groove)
Action
Horizontally adduct, medially rotate at shoulder
Coracoid process
Protract, depress, medially rotate scapula and elevate ribs
Innervation
Medical and lateral pectoral
Medial pectoral
Serratus Anterior Trapezius
Ribs 1-8
Ventral surfaces of the superior and inferior angles and vertebral
(medial) border of scapula
Protract and laterally rotate the scapula
Long Thoracic
Occipital bone, spines of C7 and T1-12, and ligamentum nuchae
Lateral 1/3 of clavicle, acromion, and spine of scapula
Laterally rotate scapula; upper portions can elevate scapula, lower portion can depress scapula
Cranial nerve 11, spinal accessory
nerve
Rhomboids Levator Scapulae Latissimus Dorsi
Spines of C7 and T1-5
Transverse Processes of C1-4
Thoracolumbar fascia, iliac crest, inferior angle of scapula and lower ribs
Vertebral (medial) border of scapula
Upper part of medial border of scapula
Intertubercular groove of humerus
Retract and medially rotate the scapula
Elevate scapula, medial rotation of scapula
Extend and adduct at shoulder, medially rotate at shoulder, and horizontally abduct away from
midline
Dorsal Scapular
3rd and 4th cervical spinal nerves
Middle subscapular (Thoracodorsal)
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Deltoid Teres Major
Lateral 1/3 clavicle, acromion, and spine of
scapula Inferior angle of scapula
Coracobrachialis Subscapularis Supraspinatus Infraspinatus Teres Minor
Long Head of Biceps Short head of biceps
Brachialis
Coracoid process of scapula
Subscapular fossa of scapula
Supraspinatus fossa of scapula
Infraspinatus fossa of scapula
Lateral border of scapula Supraglenoid tubercle of
scapula Coracoid process of
scapula Humerus
Lateral Head of Triceps
Long Head of Triceps
Humerus
Infraglenoid tubercle of scapula
Deltoid tuberocity of humerus
Crest of lesser tubercle of humerus Humerus
Abduct at shoulder; anterior fibers flex the shoulder, posterior fibers
extend the shoulder Medially rotates shoulder, and
adducts at shoulder Flex shoulder joint
Lesser tubercle of humerus Greater tubercle of humerus
Medially rotate shoulder, adduct at shoulder
Abduct at shoulder
Greater tubercle of humerus
Lateral rotation at shoulder
Greater tubercle of humerus Tuberosity of radius and to ulna
by the bicipital aponeurosis Tuberosity of radius and to ulna
by the bicipital aponeurosis Coronoid process of ulna and
ulnar tuberocity Olecranon of ulna
Lateral rotation at shoulder Flex elbow, supinate forearm, and
flex shoulder Flex elbow, supinate forearm, and
flex shoulder Flex elbow
Extend elbow
Olecranon of ulna
Extend elbow
Axillary
Lower subscapular Musculocutaneous Upper subscapular
Suprascapular Suprascapular
Axillary Musculocutaneous Musculocutaneous Musculocutaneous
Radial Radial
Page 2 of 12
Medial Head of Triceps
Brachioradialis Anconeus
Humerus
Lateral supracondylar line Lateral epicondyle
Extensor Carpi Radialis Longus and
Brevis Extensor Digitorum
Lateral epicondyle Later epicondyle
Extensor Digiti Minimi
Later epicondyle
Extensor Carpi Ulnaris
Abductor Pollicis Longus
Extensor Pollicis Brevis
Extensor Pollicis Longus
Extensor Indicis
Lateral epicondyle and ulna
Radius and ulna
Radius
Ulna
Ulna
Supinator
Lateral epicondyle and ulna
Olecranon of ulna
Distal radius Olecranon of ulna
Muscles of the Hand Base of 2nd metacarpal (long), base of 2nd and 3rd metacarpals
(brevis) Middle and distal phalanges of
fingers (digits 2-5) Joins tendons of extensor
digitorum Base of 5th metatarsal
Base of 1st metacarpal
Proximal phalanx of thumb
Distal phalanx of thumb
Joins tendons of extensor digitorum
Wraps around lateral surface of radius
Extend elbow
Flexes at elbow Extend elbow
Extend wrist, abduct, radially deviate wrist
Extends joints from wrist to DIP joints of digits 2-5
Extends wrist and all joints in digits
Extends wrist and adducts (ulnar deviation)
Abduct and extend at CMC joint
Extend CMC and MCP joints of the thumb
Extends CMC, MCP and IP joints of thumb
Extends all joints of index finger
Supinates at forearm
Radial Radial Radial Radial
Radial Radial Radial Radial Radial Radial Radial Radial
Page 3 of 12
Pronator Teres
Flexor Carpi Radialis Palmaris Longus
Flexor Carpi Ulnaris Flexor Digitorum Superficialis
Flexor Pollicis Longus
Flexor Digitorum Profundus
Medial supracondylar ridge of medial
epicondyle of humerus and coronoid of ulna Medial epicondyle Medial epicondyle Medial epicondyle Medial epicondyle of humerus and radius
Radius and interosseous membrane
Ulna and interosseous membrane
Pronator Quadratus Abductor Pollicis Brevis
Flexor Pollicis Brevis
Opponens Pollicis
Distal ulna Navicular and trapezium
Trapezium (superficial), trapezoid; capitate (deep)
Trapezium
Adductor Pollicis
Capitate, 2nd and 3rd metacarpals (oblique), 3rd metacarpal (transverse)
Lateral surface of radius
2nd and 3rd metacarpals Palmar fascia Pisiform
Middle phalanges of digits 2-5
Distal phalanx of thumb
Distal phalanges of digits 2-5
Distal radius Base of proximal phalanx
Radial side of proximal phalanx (superficial and deep) 1st metacarpal
Proximal phalanx (oblique and transverse)
Pronate forearm
Median
Flex/Radial deviation of wrist Flex wrist, tenses palmar fascia
Flex wrist and adduct wrist Flexes all joints from wrist to PIP
of digits 2-5 Flex wrist and all 3 joints of thumb
Median Median Ulnar Median
Median
Flex wrist, flex all joints to DIP in digits 2-5
Pronates forearm Abduct at CMC and MCP joints of
thumb Flex CMC and MCP of thumb
Flex and medially rotate at CMC joint
Adduct and flex at CMC and MCP joints
Media to radial side of muscle; ulnar to ulnar side of muscle
Median Median
Median; deep head by ulnar nerve Median
Ulnar
Page 4 of 12
Abductor Digiti Minimi Flexor Digiti Minimi Brevis Opponens Digiti Minimi Lumbricals of the hand Dorsal interossei of hand (4) Palmar interossei (3)
External Intercostals Internal Intercostals
Transversus Thoracis
Quadratus Lumborum
Psoas Major
Tendons of flexor digitorum profundus
Lower border of a rib Inner surface of a rib
Inner surface of body; xiphoid process Iliac crest
Upper 4 lumbar transverse processes; last thoracic; upper 4 lumbar discs; adjacent
vertebrae
Abduct MCP for digit 5 Flex MCP for digit 5
Flex CMC for digit 5
Radial side of extensor expansion of extensor digitorum
Flex MCP of digits 2-5, extend IP joints of digits 2-5
Abduct at MCP joint for digit 2-4
Lateral two, median; medial two, ulnar Ulnar
Thorax Upper border of rib below Upper border of rib below
Costal cartilages of ribs 2-6
Adduct MCP joints of digits 2,4, and 5
Ulnar
Elevate ribs during inspiration Draw ribs downward during forced
expiration Draw ribs downward
Intercostal nerves Intercostal nerves
Intercostal nerves
12th rib, transverse process of lumbar vertebrae
Lesser trochanter of femur
Lateral flexion of lumbar vertebrae Flexes hip joint
Branches of ventral rami of L1-4
Branches of ventral rami L2-4
Page 5 of 12
Psoas Minor Iliacus
Rectus Abdominis
External Oblique
Internal Oblique
Transversus Abdominis (Deepest)
Splenius Capitis
Bodies of T12 and L1 Iliac fossa Pubic crest
Lower 8 ribs
Lumbar fascia, iliac crest and lateral half of inguinal
ligament Iliac crest, lateral 1/3 of
inguinal ligament, cartilage of lower 6 ribs
Superficial/Deep Superficial
Iliopsoas fascia and pectinal line of ilium
Lesser trochanter of femur Costal cartilages 5-7
Iliac crest, linea alba
Cartilage of lower 4 ribs, linea alba
Linea alba
True Back Muscles Origin
Flexor of lumbar spine
Flexor of hip joint Flex vertebral column and increase interabdominal pressure
Compress abdomen; both sides flex vertebral column, one side (unilateral contraction) will rotate vertebral column to opposite side Compress abdomen; both sides flex vertebral column, one side
(unilateral cont.) will rotate vertebral column to same side
Compress abdomen
Insertion
Ventral ramus of L1
Femoral nerve Lower 5-6 intercostal and subcostal (12th
thoracic nerve) Lower 5 intercostal, iliohypogastic and
ilioinguinal
Lower 5 intercostal, iliohypogastic and
ilioinguinal
Lower 5 intercostal, iliohypogastic and
ilioinguinal
Action Contract one side, rotate head to same side; contract both
sides to extend head/neck
Page 6 of 12
Splenius Cervicis
Superficial
Spinalis (thoracis, cervicis, capitis)
Longissimus (thoracis, cervicis,
capitis) Iliocostalis (lumborum, thoracis, cervicis) Semispinalis
Multifidus
Rotatores
Intertransversarii
Superficial Superficial Superficial
Deep Deep Deep Deep
Spinous process Transverse process
Rib Transverse process Transverse process Tranverse process
Spinous process
Transverse process
Rib
Transverse process and occipital bone
Spinous process
Spinous process
Contract one side, rotate head to same side; contract both
sides to extend head/neck
Extension, lateral flexion of vertebral
column Extension, lateral flexion of vertebral
column Extension, lateral flexion of vertebral
column Extend vertebral column and head Rotate vertebral column to opposite
side Rotate vertebral column to opposite
side Extend vertebral
column
Page 7 of 12
Interspinalis
Deep
Rectus Femoris -Anterior
Vastus Lateralis -Anterior
Vastus Medialis -Anterior
Vastus Intermedius -Anterior Sartorius -Anterior Pectineus -Medial
Adductor Longus -Medial
Adductor Brevis -Medial
Adductor Magnus - Medial
Anterior inferior iliac spine Lateral lip of linea aspera
Muscles of thigh Patella and tibial tuberosity through patellar ligament
Patella
Medial lip of linea aspera
Patella
Shaft of femur
Anterior superior iliac spine
Pectinal line of pubis
Tendon of rectus femoris and vastus muscles
Medial surface of tibia
Pectinal line and linea aspera
Body of pubis
Medial lip of linea aspera
Body and inferior ramus of pubis
Ischiopubic ramus and ischial tuberosity
Pectineal line and linea aspera
Linea aspera and adductor tubercle on medial epicondyle of
femur
Extends knee and flexes hip
Extends knee
Extends knee
Extends knee
Flexes hip and knee joint
Flex, adduct and medially rotate hip
Flex, adduct and medially rotate hip
Flex, adduct and medially rotate hip
Upper: Adduct, flex, medially rotate
Lower: Adduct, extend, laterally rotate
Extend veterbral column Femoral Femoral Femoral Femoral Femoral Femoral Obturator Obturator
Upper: Obturator Lower: Tibial sciatic
Page 8 of 12
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