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LIMT-m of scap mvmt
LIMT-muscles of scapular movement
| Question | Answer |
|---|---|
| origin=supraspinous fossa, insertion=insertion=humerus, greater tubercle, action:abducts the shoulder | supraspinatus |
| origin=infraglenoid tubercle, posterior proximal humeral head, posterior distal humeral shaft, insertion= olecranon process,actions= adducts shoulder, extends shoulder, extends elbow | triceps brachii |
| origin=subscapular fossa, insertion= lesser tubercle of the humerus, action: medially rotates shoulder | scapularis |
| "frozen shoulder" muscle | scapularis |
| origin=edge of sternal body, medial half of clavicle, ribs 1-7--attaches on top of costal cartilage, insertion=intertubercular groove actions: adducts shoulder, extends shoulder, flexes shoulder, medially rotates shoulder | pectoralis major |
| origin=spinous processes of T7-L5, ribs 9-12 on the posterior surface, posterior iliac crest, posterior sacrum insertion=intertubercular groove of the humerus actions: adducts shoulder, extends shoulder, medially rotates shoulder | latissimus dorsi |
| "swimmer's muscle" | latissimus dorsi |
| origin=infrapinous fossa of the scapula insertion=greater tubercle of the humerus action: laterally rotates the shoulder | infraspinatus |
| origins=lateral third of the clavicle, acromion process, scapular spine insertion:deltoid tuberosity actions: abducts shoulder, extends shoulder, flexes shoulder, laterally rotates sholder, medially rotates shoulder | deltoids |
| origin=coracoid process insertion=medial humeral shaft actions: adducts shoulder, flexes shoulder | coracobrachialis |
| origins=supraglenoid tubercle of the scapula(goes through the bicipital groove) & coracoid process insertions=radial tuberosity, bicipital tuberosity actions: flexes elbow, flexes shoulder, supinates forearm | biceps brachii |
| origins=external occipital protuberance, superior nuchal lines, nuchal ligament, spinous process of C7-T12 & supraspinous ligament of C7-T12 insertions=lateral third of clavicle, acromion process, scapular spine | trapezius |
| 7 actions of this muscle of scapular mvmt: elevates, extends, depresses, laterally flexes, rotates, upwardly rotates, retracts | trapezius |
| orgin: transverse processes of C1-C4 insertion=med. border of scapula @the sup.angle & root of spine actions: scapula--downwardly rotates, elevates, laterally flexes neck | levator scapulae |
| only neck muscle that is moves the scapula | levator scapulae |
| origins=spinous processes of C7-T1/minor spinous processes of T2-T5/major insertions= med border of scapula & inf.angle actions: retracts & downwardly rotates scaplua | Rhomboids minor and major |
| origins=ribs 1-9 (lat to costal cartilage) insertion=ant med border of scapula actions: protracts, upwardly rotates & depresses scapula | serratus anterior |
| "Christmas Tree" muscle | rhomboids |
| "coat hanger" muscle | trapezius |
| origins=ribs 3-5 lat to costal cartilage insertion=coracoid process of scapula actions: depresses, protracts, downwardly rotates scapula & assists with forced inspiration | pectoralis minor |
| muscles of scapular movement | levator scapulae, pectoralis minor, rhomboids maj/min, serratus anterior, trapezius |
| muscles of shoulder movement | latissimus dorsi, teres maj/min, supraspinatus, infraspinatus, subscapularis, deltoid, pec maj, coracobrachialis, biceps brachii, triceps brachii |
| origins=spinous processes of T7-L5, ribs 9-12 pos surface, pos iliac crest, pos sacrum insertion= interbubercular groove of humerus actions: extends, med rotates & adducts shoulder | latissimus dorsi |
| "swimmer's" muscle | latissimus dorsi |
| origin=inf 1/3 of the lat border of scapula insertion: humerus/intertubercular groove actions: extends, med rotates & adducts shoulder | teres minor |
| origin=supraspinous fossa of scapula insertion= humerus/greater tubercle action: abducts the shoulder | supraspinatus |
| origin=infraspinous fossa of scapula insertion=humerus/greater tubercle action: lat rotates shoulder | infraspinatus |
| origin=superior 2/3s of lat border of scapula insertion=humerus/greater tubercle actions: adducts & lat rotates shoulder | teres minor |
| origin=subscapular fossa of scapula insertion=humerus/lesser tubercle action: med. rotates shoulder | subscapularis |
| aka rotator cuff, group of muscles deep to the deltoid. aka SITS muscles | musculotendinous cuff |
| origin=coracoid process of scapula insertion=med. humeral shaft actions: flexes & adducts shoulder | corcobrachialis |
| biceps brachii, brachialis, brachioradialis, triceps brachii, anconeus | muscles of elbow movement |
| origins=supraglenoid fossa & coracoid process of scapula insertions=radial tuberosity & bicipital aponeurosis actions: flexes shoulder & elbow, supinates the forearm | biceps brachii |
| origin=distal ant humeral shaft insertions= ulnar tuberosity, coracoid process of ulna action: flexes elbow | brachialis |
| origin=lat supracondylar ridge of humerus insertion= styloid process of radius action: flexes elbow | brachioradialis |
| origins=infraglenoid tubercle, pos proximal humeral shaft, pos distal humeral shaft insertion=olecranon process actions: extends shoulder & elbow, adducts shoulder | triceps brachii |
| origin=lat epicondyle of humerus insertions= olecranon process, sup eighth of ulnar shaft action: extends elbow | anconeus |
| muscle of elbow movement that not every person will have | anconeus |
| point at which a muscle attaches. The structure that the origin is attached to is not moved by the contraction of the muscle. | origin |
| point at which a muscle attaches to the structure that will be moved by the contraction of the muscle | insertion |
| nerves: spinal accessory nerve (cranial nerve XI) & 3rd & 4th cervical nerve | trapezius |
| nerves:dorsal scapular nerve & cervical nerves | levator scapulae |
| nerves:dorsal scapular nerve | rhomboids maj/min |
| nerves: medial pectoral nerves (C8 & T1) | pec minor |
| nerve: thoradorsal nerve | latissimus dorsi |
| nerve:lower subscapular nerve | teres major |
| nerve: suprascapular nerve on posterior side | supraspinatus & infraspinatus |
| nerve: suprascapular nerve on anterior side | subscapularis |
| nerve: axillary nerve | teres minor, deltoids |
| nerve: medial pectoral nerve | pectoralis major |
| nerve: musculocutaneous nerve on anterior side | coracobrachialis, biceps brachii, brachialis |
| nerve: radial nerve | lateral; brachioradialis & posterior tricpes brachii & anconeus |
| Elbow flexion muscles | biceps brachii, brachialis, brachioradialis, pronator teres, flexor carpi radialis |
| Elbow extension muscles | triceps brachii & anconeus |
| Shoulder flexion muscles | deltoids (anterior), pec major, coracobrachialis, biceps brachii |
| Shoulder extension muscles | latissimus dorsi, teres major, deltoids (posterior), pectoralis major, triceps brachii |
| Shoulder medial rotation muscles | latissimus dorsi, teres major, subscapularis, deltoids (anterior), petoralis major |
| Shoulder lateral rotation muscles | infraspinatus, teres minor, deltoids (posterior) |
| Shoulder abduction muscles | supraspinatus, deltoids (middle) |
| Shoulder adduction muscles | latissimus dorsi, teres maj/min, pec maj, coracobrachialis, triceps brachii |
| Scapular elevation muscles | trapezius (upper), levator scapulae |
| Scapular depression muscles | trapezius (lower), serratus anterior, pec min |
| Scapular upward rotation muscles | trapezius (upper) & serratus anterior |
| Scapular downward rotation muscles | levator scaplulae, rhomboids, pec min |
| Scapular protratction muscles | serratus anterior & pec min |
| Scapular retraction muscles | trapezius (middle) & rhomboids |
| muscles located on the anterior side of the body (except the thigh) generally | flex |
| muscles located on the posterior side (except the thigh) generally | extend |
| muscles located on the medial side of the body generally | adduct |
| muscles located on the lateral side of the body generally | abduct |
| muscles with fibers running superior to inferior generally | flex and extend |
| muscles with oblique running fibers generally | rotate |
| most muscles have two actions | 1. primary 2. secondary |
| the antagonist and agonist are generally situated | opposite of each other, typically with the same insertion |
| the fibers of the synergis generally run in this directiont | parallel |
| These muscles appear circular in shape and are normally sphincter muscles which surround an opening such as the mouth & the eyes | circular muscles |
| These are muscles where the origin usually the proximal attachment is wider than the point of insertion | convergent muscles |
| muscles that are normally long which cause large movements, not very strong but have good endurance | paralle muscles |
| These muscles have a large number of muscle fibres per unit and so are very strong, but tire easily. | pennate muscles |
| These muscles have their fibers arranged to insert in a diagonal direction onto the tendon, which allows great strength. | unipennate |
| These muscles have two rows of muscle fibers, facing in opposite diagonal directions,with a central tendon, like a feather. | bipennate |
| These muscles have multiple rows of diagonal fibers, with a central tendon which branches into two or more tendons. | multipennate |
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