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Muscles for midterm
| Question | Answer |
|---|---|
| Subscapularis | O. subscapular fossa of scapula I. Lesser tubercle of humerus A. On humerus: medial rotation |
| Trapezius | O. UT pt1: med. 1/3 of SNL & EOP UT pt2: sps C1-C7 & Ligamentum Nuchae Md: sps of C7-T3 ss lig Low: sps of T4-T12 ss lg I. UT pt1: lat 1/3 of clavicle Utpt2: acromion process Mid: crest of spine of scap Low: Medial portion of spine and root of spin |
| Trapezius Actions | Ut pt1: elevate clavicle, extend head UT pt2: elevate scapula, extend C/S Mid: retracts scapula, extends T/S Lower: depresses scapula, extend T/S |
| Masseter | O. Zygomatic arch I. Angle and ramus of mandible A. Elevates mandible |
| Brachioradialis | O. lat. suprcondylar ridge of humerus I. Styloid process of radius A. Flex the elbow, assist to pronate and supinate the forearm |
| Biceps Brachii | O. Long hd: supragleniod tubercle of scap Short hd: coracoid process of scap I. radial tuberosity, bicipital aponeurosis into deep fascia of forearm A. supinates forearm, flexes forearm, weakly flexes and abducts arm at shoulder joint |
| Triceps Brachii | O. lg hd: infraglenoid tubercle of scap lat hd: upper 1/2 of lat. surface of humerus med hd: lower 1/2 of post surface of hum I. Olecranon process of ulna A. Extends forearm, long hd: extends and adducts arm |
| Brachialis | O. Lower 1/2 of ant. humerus I. Tuberosity of ulna and coracoid process of ulna A. Flexes forearm at elbow joint |
| Deltiod | O. AD: lat 1/3 of clavicle MD: acromion process PD: inf. edge of spine of scap I. deltoid tuberosity A. Humerus: AD: flexion, medial rotation, horizontal adduction MD: abduction PD: extension, lateral rotation, horizontal abduction |
| Supraspinatus | O. Supraspinous fossa of scap I. greater tubercle of humerus A. abducts humerus in first 15o till about 90 |
| Infraspinatus | O. infraspinatus fossa of scap I. greater tubercle of humerus A. laterally rotates humerus, horizontal abduction of humerus |
| Middle Scalene | O. Tps of C2-C7 I. 1st rib post. to ant. scalene A. Bi lat flexion of C/S, bi lat stabilization of C/S Uni lat lat flexion of C/S, uni lat contra lat rotation of C/S 2o muscles of respiration |
| Anterior Scalene | O. Tps of C3-C6 I. Scalene tubercle of 1st rib A. Bi lat flexion of C/S, bi lat stabilization of C/S Uni lat lat flexion of C/S, uni lat contra lat rotation of C/S 2o muscles of respiration |
| Posterior Scalene | O. Tps of C5-C7 I. 2md Rib A. Bi lat stabilization of C/S, uni lat lat flexion of C/S, uni lat contra lat rotation of C/S 2o muscles of respiration |
| Oblique Capitis Inferior | O. Spinous process of C2 I. transverse process of C1 A. uni lat ispi lat rotation of head via C1 |
| Rectus Capitis Posterior Minor | O. Posterior arch of atlas I. medial portion of inferior nuchal line of occipital bone A. Bi lat extension of head Uni lat lat flexion of head |
| Rectus Capitis Posterior Major | O. Spinous process of C2 I. lateral portion of inferior nuchal line of occipital bone A. Uni lat ispi lat rotation of head, uni lat lat flexion of head |
| Oblique Capitis Superior | O. Transverse process of C1 I. occipital bone between inferior and superior nuchal line A. Bi lat extension of head Uni lat lat flexion of head |
| Quadratus Lumborum | O. Iliac crest, iliolumbar ligament I. 12th rib, tps of L1-L4 A. Bi lat: stabilizes lumbar spine, resists pull of diaphragm, stabilizes for forced inhalation Uni lat: lat flexion of lumbar spine, hip hiker |
| Temporalis | O. Temporal fossa I. Coronoid process of mandible A. Elevates mandible, retracts mandible |
| Gastrocnemius | O. Med hd: med. epicondyle of femur Lat hd: lat. epicondlye of femur I. calcaneal tuberosity via achilles tendon A. Knee joint: flexion Ankle joint: plantar flexes |
| Soleus | O. Soleal line of tibia, post hd of fibula, fibrous arch b/w tibia and fibula I. Calcaneal tuberosity via Achilles tendon A. ankle joint: plantar flexes, maintains posture |
| Teres Minor | O. Upper 2/3 of axillary border I. Greater tubercle of humerus A. On humerus: laterally rotates, adducts |
| Rectus Femoris | O. anterior hd: AIIS, posterior hd: above acetabulum I. Quadriceps tendon, patellar ligament, tibial tuberosity A. hip joint: flexes Knee joint: extends |
| Vastus Intermedius | O. Shaft of femur (ant. and lat surface) I. Quadriceps tendon, patellar ligament, tibial tuberosity A. Extends knee joint |
| Vastus Lateralis | O. Lateral hip of linea aserpa, greater trochanter I. Quadriceps tendon, patellar ligament, tibial tuberosity A. extends knee joint |
| Vasuts Medialis | O. Medial lip of linea aspera, intertrochanteric line, medial supracondylar line I. Quadriceps tendon, patellar ligament, tibial tuberosity A. extends |
| Splenius Cervicis | O. Spinous of T3-T6 I. transverse processe of upper two or three cervical vertebrae and upper two or three cervical vertebrae A. Bi lat: extend the neck Uni lat: rotate head to same side, laterally flex neck |
| Splenius Capitis | O. Lower part of ligamentum nuchae, sps of 7th cervical vert. and upper 3 or 4 thoracic vertebrae I. Mastoid process of temporal bone and lateral part of SNL A. Bi lat: extend head and neck Uni lat: rotate hd and neck to same side Laterally flx hd nk |
| Semitendinous | O. Ishcial tuberosity I. Pes anerinus A.Hip joint: extends Knee joint: flexes, medially rotates |
| Biceps Femoris | O. Long hd: ischial tuberosity Short hd: lateral lip of linea aspera, lateral supraconylar ridge I. hd of fibula, lateral condyle of tibia A. Long hd: Hip joint: extends Knee joint: flex, laterally rotates Short hd: Knee joint: flex, laterally rotates |
Created by:
lazerbeam
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