Section 1
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Extensor carpi radialis brevis
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Last updated
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Date created
Mar 1, 2020
Cards (84)
Section 1
(50 cards)
Extensor carpi radialis brevis
supraspinatus
-Origin supraspinous fossa of scapula -Insertion superior facet of greater tubercle of humerus -Nerve suprascapular nerve -Actions abduction of arm and stabilizes humerus
internal oblique
-Origin Inguinal ligament, Iliac crest and the Lumbodorsal fascia. -Insertion Linea alba, Pecten Pubis (via Conjoint tendon) and ribs 10-12. -Actions = Compresses abdomen =unilateral contraction rotates vertebral column to same side.
infraspinatus
-Origin infraspinous fossa of the scapula -Insertion middle facet of greater tubercle of the humerus -Nerve suprascapular nerve -Actions Lateral rotation of arm and stabilizes humerus
biceps femoris
-Origin tuberosity of the ischium, linea aspera, femur -Insertion the head of the fibula which articulates with the back of the lateral tibial condyle -Nerve =long head: tibial nerve =short head: common fibular nerve -Actions =flexes knee joint, =laterally rotates knee joint (when knee is flexed), =extends hip joint (long head only) -Antagonist Quadriceps muscle
bicipital aponeurosis
coracobrachialis
-Origin Coracoid process of scapula -Insertion Medial humerus -Nerve Musculocutaneous nerve (C5, C6, and C7) -Actions adducts humerus , flexes the arm at glenohumeral joint
sartorius
-Origin Anterior superior iliac spine of the pelvic bone -Insertion anteromedial surface of the upper tibia in the pes anserinus -Nerve femoral nerve (sometimes from the intermediate cutaneous nerve of thigh) -Actions Flexion, abduction, and lateral rotation of the hip, flexion of the knee -tailor's muscle and longest.
piriformis
-Origin Sacrum -Insertion Greater trochanter -Nerve Nerve to the piriformis (L5, S1, and S2) -Actions External rotator of the thigh
pronator quadratus
-Origin medial, anterior surface of the ulna -Insertion lateral, anterior surface of the radius -Nerve median nerve (anterior interosseous nerve) -Actions pronates the forearm -Antagonist Supinator muscle
external oblique
-Origin Ribs 5-12 -Insertion Iliac crest, Pubic tubercle, Linea alba -Actions Contralateral rotation of torso
pectoralis major
-Origin: =Clavicular head: anterior border of the medial half of the clavicle. =Sternocostal head: anterior surface of the sternum, the superior six costal cartilages, and the aponeurosis of the external oblique muscle -Insertion: Lateral lip of the bicipital groove of the humerus (anteromedial proximal humerus) -Nerve: lateral pectoral nerve and medial pectoral nerve =Clavicular head: C5 and C6 =Sternocostal head: C7, C8 and T1 -Actions: =Clavicular head: flexes the humerus =Sternocostal head: extends the humerus. As a whole, adducts and medially rotates the humerus. It also draws the scapula anteriorly and inferiorly.
tensor fascia latae
-Origin Iliac crest -Insertion Iliotibial tract -Nerve Superior gluteal nerve (L4, L5, S1) -Actions =Hip; flexion, medial rotation, abduction
pectinus
-Origin Pectineal line of the pubic bone -Insertion Pectineal line of the femur -Nerve Femoral nerve, sometimes obturator nerve -Actions flexion and adduction of thigh
supinator
-Origin Lateral epicondyle of humerus, supinator crest of ulna, radial collateral ligament, annular ligament -Insertion Lateral proximal radial shaft -Nerve Deep branch of the radial nerve -Actions Supinates forearm -Antagonist Pronator teres, pronator quadratus
brachioradialis
-Origin Lateral supracondylar ridge of the humerus -Insertion Distal radius (radial styloid process) -Nerve :Radial nerve -Actions :Flexion of elbow and supination
trapezius
-Origin spinous processes of vertebrae C1-T12 -Insertion external occipital protuberance, nuchal ligament, medial superior nuchal line, posterior border of the lateral third of the clavicle, acromion process, and spine of scapula -Nerve accessory nerve (motor) cervical spinal nerves C3 and C4 (motor and sensation) -Actions rotation, retraction, elevation, and depression of scapula -Antagonist =serratus anterior muscle, =Latissimus dorsi
*quadriceps*
-Origin Combined rectus: femoris and vastus muscles -Insertion: Tibial tuberosity -Nerve: Femoral nerve -Actions =Knee extension =Hip flexion (Rectus femoris only)
semitendinosus
-Origin Tuberosity of the ischium -Insertion Pes anserinus (tibia) -Nerve Sciatic (tibial, L5, S1, S2) -Actions Flexion of knee, extension of the hip joint -Antagonist Quadriceps muscle
palmaris longus
-Origin medial epicondyle of humerus (common flexor tendon) -Insertion palmar aponeurosis -Nerve median nerve -Actions wrist flexor -Antagonist Extensor carpi radialis brevis, Extensor carpi radialis longus, Extensor carpi ulnaris
multifidus
-Origin Sacrum, Erector spinae Aponeurosis, PSIS, and Iliac crest -Insertion spinous process -Actions =Bilateral backward extension, = unilateral side-bending to the ipsilateral side =rotation to the contralateral side
*hamstring*
-Origin tuberosity of the ischium, linea aspera -Insertion tibia, fibula -Nerve: sciatic nerve (tibial nerve and common fibular nerve) -Actions: flexion of knee, extension of hip -Antagonist: Rectus femoris muscle
xiphoid process of sternum
pectoralis minor
-Origin; Third to fifth ribs, near their costal cartilages -Insertion: Medial border and superior surface of the coracoid process of the scapula -Nerve: Medial pectoral nerve (C8, T1) -Actions: Stabilizes the scapula by drawing it inferiorly and anteriorly against the thoracic wall, raises ribs in inspiration
teres major
-Origin Posterior aspect of the inferior angle of the scapula -Insertion Medial lip of the intertubercular sulcus of the humerus -Nerve Lower subscapular nerve (segmental levels C5 and C6) -Actions = adduct the humerus, = Internal rotation (medial rotation) of the humerus = extend the humerus from flexed position,
flexor carpi ulnaris
-Origin Medial epicondyle (common flexor tendon) and medial margin on olecranon of ulna -Insertion Pisiform, hook of the hamate, base of the fifth metacarpal bone -Nerve ulnar nerve Nerve root C7, C8 and T1 -Actions Flexion and adduction of wrist -Antagonist Extensor carpi radialis brevis muscle and extensor carpi radialis longus muscle
extensor carpi ulnaris
-Origin Common extensor tendon (lateral epicondyle), ulna -Insertion 5th metacarpal -Nerve Deep branch of the radial nerve (C7, C8) -Actions extends and adducts the wrist -Antagonist Flexor carpi radialis
rectus femoris
-Origin anterior inferior iliac spine and the exterior surface of the bony ridge which forms the groove on the iliac portion of the acetabulum -Insertion inserts into the patellar tendon as one of the four quadriceps muscles -Nerve femoral nerve -Actions knee extension; hip flexion -Antagonist Hamstring
triceps
-Origin =Long head: infraglenoid tubercle of scapula =Lateral head: above the radial sulcus =Medial head: below the radial sulcus -Insertion Olecranon process of ulna -Nerve Radial nerve -Actions = Extends forearm, = long head extends,adducts arm, Extends shoulder -Antagonist Biceps brachii muscle
flexor carpi radialis
-Origin medial epicondyle of humerus (common flexor tendon) -Insertion Bases of second and third metacarpal bones -Nerve Median nerve -Actions Flexion and abduction at wrist -Antagonist Extensor carpi ulnaris muscle
deltoid
-Origin the anterior border and upper surface of the lateral third of the clavicle, acromion, spine of the scapula -Insertion deltoid tuberosity of humerus -Nerve Axillary nerve -Actions shoulder abduction by middle deltoid, flexion by anterior deltoid and extension by posterior deltoid -Antagonist Latissimus dorsi
upper trapezius
-Nerve:accessory nerve (motor) -Actions: scapula eleavtion -origin occipital bone, nuchal ligament on upper cervical spinous processes -insertion outer third of clavicle, acrominon process
lower trapezius
-O: spinous processes of middle and lower thoracic vertebra -I:spine medial nagle -F: depression of scapula
biceps brachii
-Origin =Short head: coracoid process of the scapula. =Long head: supraglenoid tubercle -Insertion Radial tuberosity and bicipital aponeurosis into deep fascia on medial part of forearm -Nerve Musculocutaneous nerve (C5-C7) -Actions =Flexes elbow, =supinates radioulnar joint in the forearm -Antagonist Triceps brachii muscle
rhomboids
-Origin nuchal ligaments, spinous processes of the C7 to T5 vertebrae -Insertion medial border of the scapula -Nerve dorsal scapular nerve -Actions
pronator teres
-Origin =humeral head: medial supracondylar ridge of humerus (common flexor tendon) =ulnar head: coronoid process of ulna -Insertion Middle of the lateral surface of the body of the radius -Nerve median nerve -Actions pronation of forearm, flexes elbow -Antagonist Supinator muscle
rectus abdominis
-Origin crest of pubis -Insertion =Costal cartilage of ribs 5-7, =xiphoid process of sternum -Nerve segmentally by thoraco-abdominal nerves (T7 to T11) -Actions Flexion of the lumbar spine -Antagonist Erector spinae
latissimus dorsi
-Origin: Spinous processes of vertebrae T7-L5, thoracolumbar fascia, iliac crest, inferior 3 or 4 ribs and inferior angle of scapula -Insertion:Floor of intertubercular groove of the humerus -Nerve: Thoracodorsal nerve -Actions: Adducts, extends and internally rotates the arm when the insertion is moved towards the origin. -Antagonist: Deltoid and trapezius muscle
extensor carpi radialis longus
-Origin lateral supracondylar ridge -Insertion 2nd metacarpal -Nerve radial nerve -Actions extensor at the wrist joint, abducts the hand at the wrist -Antagonist Flexor carpi ulnaris muscle
gracilis
-Origin ischiopubic ramus -Insertion tibia (pes anserinus) -Nerve anterior branch of obturator nerve -Actions flexes, medially rotates, and adducts the hip,
vastus lateralis
-Origin Greater trochanter, Intertrochanteric line, and Linea aspera of the Femur -Insertion Patella via the Quadriceps tendon and Tibial tuberosity via the Patellar ligament -Nerve femoral nerve -Actions Extends and stabilizes knee -Antagonist Hamstring
teres minor
-Origin lateral border of the scapula -Insertion inferior facet of greater tubercle of the humerus -Nerve axillary nerve -Actions laterally rotates the arm, stabilizes humerus
serratus anterior
-Origin: fleshy slips from the outer surface of upper 8 or 9 ribs -Insertion: costal aspect of medial margin of the scapula -Nerve: long thoracic nerve (from roots of brachial plexus C5, 6, 7) -Actions: protracts and stabilizes scapula, assists in upward rotation. -Antagonist: Rhomboid major, Rhomboid minor, Trapezius
levator scapulae
-Origin:Posterior tubercles of transverse processes of C1 - C4 vertebrae -Insertion:Superior part of medial border of scapula -Nerve cervical nerve; (C3, C4) and dorsal scapular nerve (C5) -Actions: Elevates scapula and downward rotation
Subscapular fossa
subscapular fossa is a feature on the scapula bone, which is also known as the shoulder bone (or shoulder blade)
subscapularis
-Origin Subscapular fossa -Insertion Lesser tubercle of humerus -Nerve Upper subscapular nerve, lower subscapular nerve (C5, C6) -Actions Internally (medially) rotates humerus and stabilizes shoulder
iliopsoas
-Origin Iliac fossa and lumbar spine -Insertion Lesser trochanter of femur -Nerve Branches from L1-L3 -Actions Flexion of hip -Antagonist Gluteus maximus and the posterior compartment of thigh
semimembranosus
-Origin Ischial tuberosity -Insertion Medial condyle of tibia -Nerve Tibial part of sciatic nerve (L5, S1 and S2) -Actions Extension of hip and flexion of knee -Antagonist Quadriceps muscle and Tensor fasciae latae
erector spinae
-Origin Spinous processes of T9-T12 thoracic vertebrae, medial slope of the dorsal segment of illiac crest -Insertion spinous processes of T1 and T2 thoracic vertebrae and the cervical vertebrae -Actions extends the vertebral column -Antagonist rectus abdominis muscle
brachialis
-Origin anterior surface of the humerus, particularly the distal half of this bone -Insertion coronoid process and the tuberosity of the ulna -Nerve musculocutaneous nerve (C5, C6) -Actions flexion at elbow joint
Section 2
(34 cards)