Straight MSK anatomy Flashcards by Elizabeth Walker

What is the origin, insertion and action of the gastrocnemius?

Origin: posterior condoles of the femur
Insertion: calcaneus via the Achilles tendon
Action: Plantarflexion and weak knee flexion

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What is the origin, insertion and action of the Soleus?

Origin: Posterior and medial tibia and fibula head
Insertion: calacaneus via the Achilles tendon
Action: Plantarflexion

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What is the origin, insertion and action of the popliteus?

Origin: lateral epicondylitis of the femur
Insertion: Posterior tibia
Action: Initiates flexion of the knee and internal rotation of tibia

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What is the origin, insertion and action of the tibialis anterior?

Origin: Upper 1/2 and lateral surface of the tibia
Insertion: Base of 1st metatarsal and medial cuneiform
Action: Dorsiflexion and inversion

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What is the origin, insertion and action of the tibialis posterior?

Origin: Posterior tibia and fibula
Insertion: navicular, cineforms, cuboid and mets
Action: Plantarflexion and inversion

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What is the origin, insertion and action of the peroneus longus?

Origin: proximal portion of the lateral fibula
Insertion: 1st metatarsal and medial cuneforms
Action: everts and Plantarflexion

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What is the origin, insertion and action of the Peroneus brevis?

Origin: lower 2/3 of the lateral fibula
Insertion: Base of 5th metatarsal
Action: everts and plantar flexes the foot

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What is the origin, insertion and action of the Flexor digitorum longus?

Origin: posterior surface of the tibia
Insertion: base of phalanges 1-4
Action: flexes toes and plantar flexes foot

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What is the origin, insertion and action of the Extensor digitorum longus?

Origin: anterior surface of tibia and fibula
Insertion: phalanges 1-4
Action: extends toes and dorsiflexion

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What is the origin, insertion and action of the Vastus medialis?

Origin: medial femur
Insertion: tibial tuberosity via patella tendon
Action: Extends knee

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What is the origin, insertion and action of the Vastus lateralis?

Origin: lateral femur
Insertion: tibial tuberosity via patella tendon
Action: Extends knee

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What is the origin, insertion and action of the Vastus intermedialis?

Origin: Anterior femur
Insertion: Tibial tuberosity via the patella tendon
Action: Extends knee

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What is the origin, insertion and action of the Rectus femoris?

Origin: Anterior inferior iliac spine
Insertion: Tibial tuberosity via patella tendon
Action: Flexes hip and extends knee

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What is the origin, insertion and action of the semimembranosus?

Origin: Ischial tuberosity
Insertion: Posterior portion of the medial condole of the tibia
Action: Flexes knee and extends hip

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What is the origin, insertion and action of the Semitendinosus?

Origin: ischial tuberosity
Insertion: anteromedial portion of the proximal tibia
Action: Flexes knee and extends hip

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What is the origin, insertion and action of the Biceps femoris?

Origin: ischial tuberosity and linea aspera of the femur
Insertion: fibular head
Action: flexes knee, extends hip and laterally rotates the leg.

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What is the origin, insertion and action of the Sartorius?

Origin: anterior superior iliac spine
Insertion: anteromedial portion of proximal tibia
Action: Flexes, externally rotates and abducts hip.

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What is the origin, insertion and action of the Gluteus maximus?

Origin: lateral sacrum and gluteal surface of ilium
Insertion: Gluteal tuberosity of femur and IT band
Action: extends and laterally rotates femur

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What is the origin, insertion and action of the Gluteus medius?

Origin: gluteal surface of ilium
Insertion: greater trochanter
Action: abducts: femur

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What is the origin, insertion and action of the Gluteus minimus?

Origin: gluteal surface of ilium
Insertion: greater trochanter
Action: abducts and medially rotates femur.

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What is the origin, insertion and action of the Piriformis?

Origin: Anterior sacrum
Insertion: Greater trochanter
Action: Abducts and externally rotates femur

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What is the origin, insertion and action of the Tensor fascia latae?

Origin: anterior superior iliac spine
Insertion: Lateral tibia via IT band
Action: Flexes and abducts hip

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What is the origin, insertion and action of the Adductor longus?

Origin: remix of pubis
Insertion: middle 1/3 of linea aspera of femur
Action: Adducts femur

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What is the origin, insertion and action of the Adductor brevis?

Origin: Remus of pubis
Insertion: lesser trochanter and linea aspera of the femur
Action: adducts femur

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What is the origin, insertion and action of the Adductor Magnus?

Origin: ramis of pubis Insertion: linea aspera and medial epicondyle femur Action: adducts femur

What is the origin, insertion and action of the Gracilis?

Origin: ramis of pubis Insertion: Anteromedial portion of proximal tibia Action: adducts and flexes hip

What is the origin, insertion and action of the Petineus?

Origin: ramis of pubis Insertion: pectineal line of the femur Action: adduction, flexion and medial rotation of the femur.

What is the origin, insertion and action of the Coracobrachialis?

Coracoid process Anteromedial surface of the humerus Weakly flexes and adducts the shoulder

What is the origin, insertion and action of the Biceps brachii?

Supraglenoid tubercle and coracoid process Head of radius Flexes shoulder and arm and supinates forearm

What is the origin, insertion and action of the Brachialis?

Anterior surface of the distal half of the humerus Coronoid process of the ulna Flexes arm

What is the origin, insertion and action of the Brachoradialis?

Distal 1/3 of lateral humerus Styloid process of the radius Flexes forearm

What is the origin, insertion and action of the Triceps?

Infraglenhoid process posterior humerus Olecranon process of ulna Extends shoulder and extends elbow.

What is the origin, insertion and action of the supraspinatus?

Supraspinous fossa of the scapula Greater tubercle of the humerus Abducts arm

What is the origin, insertion and action of the infraspinatus?

Infraspinous fossa of scapula Greater tuburcle of humerus Externally rotates and adducts the shoulder

What is the origin, insertion and action of the teres minor?

Lateral border of the scapula Greater tubercle of the humerus Externally rotates and adducts the shoulder

What is the origin, insertion and action of the subscapularis?

Subscapular fossa of the scapula Lesser tubercle of the humerus Internally rotates the arm

What is the origin, insertion and action of the anconeus?

Lateral epicondyle of the humerus Lateral portion of the olecronon process Extension of forearm

What is the origin, insertion and action of the supinator?

Lateral epicondyle of humerus Lateral shaft of proximal radius Supination

What is the origin, insertion and action of the pronator teres?

Medial epicondlye of the humerus Lateral shaft of the radius Pronation

What is the origin, insertion and action of the pectoralis major?

Medial clavicle, sternum and ribs 1-6 Bicipital groove Flexion, adduction and medial rotation of humerus

What is the origin, insertion and action of the pectoralis minor?

Ribs 3-5 Coracoid process Protraction of scapula

What is the origin, insertion and action of the erector spinae?

Sacrum Ribs, vertebrae, cranium Extension of spine

What is the origin, insertion and action of the anterior scalenes?

TP of C3-C6 Rib 1 Side bend neck and elevate ribs

What is the origin, insertion and action of the middle scalenes?

TPs of C2-C7 Rib 1 Side bend neck and elevates ribs

What is the origin, insertion and action of the posterior scalenes?

TPs of C5-C7 Rib 2 Side bend neck and elevate ribs

What is the origin, insertion and action of the splenius capitis?

Nuchal ligament and SP of C7-T3 Mastoid process Extend, rotate and laterally flex neck

What is the origin, insertion and action of the sternocleidomastoid?

Sternum and clavicle Mastoid process Rotate, side bend and flex neck

What is the origin, insertion and action of the levator scapulae?

TPs of C1-C4 Superior border of scapula Elevates scapula

What is the origin, insertion and action of the latissimus dorsi?

SPs of T7-L5, iliac crest, 3 or 4 ribs,inferior angle of scapula Bicipital groove of humerus Adducts, internally rotates and extension of arm

What is the origin, insertion and action of the rhomboid minor?

SPs of C7-T1 Medial scapula Elevates and retracts scapula

What is the origin, insertion and action of the rhomboid major?

SPs of T2-T5 Medial scapula Elevates and retracts scapula

What is the origin, insertion and action of the trapezius?

SPs of C7-T12 and occiput Lateral clavicle, acromion process and spine of scapula Upper - elevates scapula Middle - retracts scapula Lower - depresses scapula

What is the origin, insertion and action of the teres major?

Inferior angle of the scapula Bicipital groove Internal rotation of the arm

What is the origin, insertion and action of the serratus anterior?

Ribs 1-9 Anterior scapula Protracts scapula

What is the origin, insertion and action of the iliacus?

Iliac fossa Lesser trochanter Hip flexion

What is the origin, insertion and action of the rectus abdominis?

Pubic crest Costal certilidge of ribs 5-7, xiphoid process of sternum Flexion of lumbar spinae

What is the origin, insertion and action of the intercostals?

Ribs 1-11 Ribs 2-12 Elevates and depresses ribs

What is the origin, insertion and action of the internal obliques?

Inguinal ligament, iliac crest Inferior ribs, xiphoid process Rotates abdomen to the same side

What is the origin, insertion and action of the external obliques?

Lower 8 ribs Iliac crest, Inguinal Ligament Rotates torso

What is the origin, insertion and action of the quadratus lumborum?

Iliac crest Rib 12 and TPs of lumbar spine Lateral flexion and extension of vertebral column

What is the origin, insertion and action of the transverse abdominius?

Iliac crest, iliolumbar ligament, cartilidge of lower 6 ribs Xiphoid process, linea alba and pubis Compression of ribs and viscera.

What is the origin, insertion and action of the flexor carpi radialis?

Medial epicondyle Base of 2nd and 3rd metacarpal Flexion and abduction of wrist

What is the origin, insertion and action of the flexor carpi ulnaris?

Medial epicondyle Pisiform, hamate and 5th metacarpal Flexion and adduction of wrist

What is the origin, insertion and action of the entensor carpi radialis brevis?

Lateral epicondyle Base of 3rd metacarpal Extension of wrist

What is the origin, insertion and action of the extensor carpi radialis longus?

Lateral epicondyle Base of 2nd metacarpal Extension of wrist

What is the origin, insertion and action of the palmaris longus?

Medial epicondyle Palmar aponeurosis Wrist flexor

Straight MSK anatomy Flashcards

(67 cards)