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Details Title: Thoracic Limb Description: Thoracic limb Total Flash Cards: 133 Created: 02/04/2006 09:29:32	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term What main function does the thoracic limb perform? Definition weight bearing, shock absorber Term Shoulder joint name Definition scapulohumeral joint Term The point of the shoulder Definition Major tubercule of the humerous Term point of the elbow Definition olecranon tuberosity Term cannon bone Definition metacarpus Term fetlock (ankle) Definition metacarpophalangeal joint Term pastern joint Definition proximal interphalangeal joint Term coffin joint Definition distal interphalangeal joint Term How much lameness in the horse is due to the thoracic limb? Definition 70% in general limb, 90% below the carpus Term Bones of the scapula Definition scapular cartilage, spine, tuber spinae, glenoid cavity, supraglenoid tubercle Term What is absent on the horse scapula? Definition acromion Term The space between the fused radius and ulna Definition interosseous space Term the main function of the radius Definition weight baring Term What is different about the ulna of the horse? Definition the distal third is absent Term Bones of the proximal carpal row Definition radial carpal bone, intermediate carpal bone, ulnar carpal bone, accessory carpal bone Term carpal bones of the distal row Definition first, second, third, fourth carpal bone Term splint bone Definition metacarpal 2, metacarpal 4 Term cannon bone Definition metacarpal 3 (where maine digit arises) Term Pop Splint Definition ligaments become torn, inflammation, extra bone growth in the metacarpus area. cause lameness Term number 1 most common site of fracture Definition proximal sesamoid bones Term Navicular bone Definition distal sesamoid bone Term Extrinsic muscle not found in the dog, but found in the horse Definition subclavius muscle Term cutaneus omobrachialis innervation Definition lateral thoracic nerve Term cutaneus omobrachialis action Definition twitch or tense skin Term latissimus dorsi innervation Definition thoracodorsal nerve Term latissimus dorsi action Definition retract limb Term trapezius innervation Definition accessory nerve Term trapezius action Definition stabilize shoulder, lift, advance, abduct limb Term rhomboideus innervation Definition ventral branches of cervical and thoracic spinal nerves Term rhomboideus action Definition fix shoulder, raise the neck Term serratus ventralis innervation Definition long thoracic nerves, ventral brances of cervical nerves Term serratus ventralis action Definition slig/weight bearing of pectoral girdle Term pectoral innervation Definition pectoral nerves Term superficial pectoral actions Definition support trunk, adduct limb Term deep pectoral action Definition support trunk, retract unsupported limb Term subclavius action Definition support trunk Term supraspinatus innervation Definition suprascapular nerve Term supraspinatus action Definition extend/stablize shoulder Term infraspinatus innervation Definition suprascapular nerve Term infraspinatus action Definition abduct, stabilize, rotate shoulder Term sweeny Definition damage to suprascapular nerve-atrophy of supraspinatus and infraspinatus Term deltoideus innervation Definition axillary nerve Term deltoideus action Definition flex shoulder joint Term teres minor innervation Definition axillary nerve Term teres minor action Definition flex shoulder, rotate laterally Term teres major innervation Definition axillary nerve Term teres major action Definition flex/rotate medially Term subscapularis innervation Definition subscapular nerve Term subscapularis action Definition adduct, extend, stabilize shoulder Term coracobrachialis innervation Definition musculocutaneous nerve Term coracobrachialis action Definition adduct shoulder joint Term brachialis innervation Definition musculocutaneous and radial nerve Term brachialis action Definition flex and lift elbow joint Term biceps brachii innervation Definition musculocutaneous nerve Term biceps brachii action Definition flex elbow joint, extend shoulder joint Term deep facia connecting tendon of biceps brachii to extensor carpi radialis Definition lacertus fibrosus (part of stay apparatus) Term bursa under biceps brachii tendon Definition intertubercular (bicipital) bursa Term tensor fasciae antebrachii innervation Definition radial nerve Term tensor fasciae antebrachii action Definition extend elbow joint, more developed in the horse than in the dog Term anconeus innervation Definition radial nerve Term anconeus action Definition extend elbow joint Term triceps brachii innervation Definition radial nerve Term triceps brachii action Definition extend elbow joint, long head flexes shoulder joint Term 3 heads of triceps Definition long, medial, lateral (accessory is absent in horse) Term extensor carpi radialis innervation Definition radial nerve Term extensor carpi radialis action Definition extend carpus Term common digital extensor innervation Definition radial nerve Term common digital extensor action Definition extend carpus Term lateral digit extensor innervation Definition radial nerve Term lateral digital extensor action Definition extend carpus Term ulnaris lateralis action Definition FLEX carpus Term ulnaris lateralis innervation Definition radial nerve Term extensor carpi obliquus innervation Definition radial Term extensor carpi obliquus Definition extend carpus Term muscle equivilent to abductor pollicis longus in the dog Definition extensor carpi obliquus Term flexor carpi radialis innervation Definition median nerve Term flexor carpi radialis action Definition flex carpus Term flexor carpi ulnaris heads Definition humeral and ulnar Term flexor carpi ulnaris innervation Definition ulnar nerve Term flexor carpi ulnaris action Definition flex carpus Term superficial digital flexor action Definition flex carpus Term superficial digital flexor innervation Definition ulnar nerve Term deep digital flexor innervation Definition median, ulnar nerves Term deep digital flexor action Definition flex carpus Term tendionous band that connects tendon of SDF to the radius Definition accessory ligament of SDF Term tendinous band from palmar carpal ligament to the tendon of the DDF Definition accessory ligament of DDF Term a structure which retains an organ or tissue in place Definition retinaculum Term dorsal part of deep facia over groove and binding down the extensor tendons Definition extensor retinaculum Term deep fascia on palmar surface of carpus-stretch across accessory carpal bone to medial collateral ligament and proximal extremity of metacarpal Definition flexor retinaculum (superficial and deep leaf) Term canal between palmar carpal ligament and flexor retinaculum Definition carpal canal Term carpal canal contains: Definition 1. SDF, 2. DDF, 3. synovial sheath, 4. medial palmar nerve, 5. medial a. Term palmar part of carpal fibrous joint capsule. think and dense Definition palmar carpal ligament Term sheath that invests the tendon of muscles passing through the carpus and digit-produces synovial fluid for lubrication Definition tendon sheath (synovial sheath)-reduce friction Term synovial sheath of SDF and DDF at carpus Definition carpal synovial sheath Term synovial sheath of SDF and DDF tendons at the digit Definition digital synovial sheath Term carpal joints Definition 1. hinge synovial joint, 2. flexion/extention, 3. fibrous membrane of joint capsule common to 3 joints Term joint between distal end of radius and proximal row of carpal bones Definition radiocarpal (antebrachiocarpal) joint-allows greatest movement Term joint between proximal and distal rows of carpal bones Definition midcarpal joint Term clinical significance of midcarpal joint Definition common site of carpal injections-communicates with carpometacarpal synovial sacs (C3 and C4)-injection will spread to all parts Term joint between distal row of carpal bones and proximal end of metacarpal bones Definition carpometacarpal joint Term common carpal bone fractures Definition radial carpal bone and 3rd carpal bone Term partially fleshy int he foal-becomes collagenous ligament in adult Definition interosseous muscle Term interosseous (suspensory ligament) action Definition support fetlock by preventing dorsal flexion or overextension with weight on limb Term ligament that holds flexor tendons in place-between proximal sesamoid bones, holds SDF tendon Definition palmar annular ligament Term ligament that holds flexor tendons, attaches near proximal and distal p1 tubercle Definition proximal digital annular ligament Term ligament bridging medial and lateral borders of P1 and P3, holds flexor tendons Definition distal digital annular ligament Term ligament continuation of suspensory ligament Definition sesamoid ligaments Term ligament that attaches proximally to bases of sesmoid bones and distally to proximal end of P2 Definition straight sesamoid ligament Term ligament that attaches proximally to base of sesamoid bones and distally to palmar surface of P1 Definition oblique sesamoid ligament Term ligament that arises from base of proximal sesamoid bones and cross eachother to end of proximal end of P1 Definition cruciate sesamoid ligament Term ligament between two sesamoid bones Definition intersesamoid ligament Term surface of proximal sesamoid bones that articulate with MC3, dorsal, concave Definition articular surface Term surface of proximal sesamoid bones that is attachment for suspensory ligament Definition abaxial surface Term surface of proximal sesamoid bones that form a groove for DDF tendon Definition palmar surface Term The "big 3" fracture sites Definition 1. proximal sesamoid bones, 2. metacarpal bone, 3. carpal bones (radial and 3rd) Term function of distal sesamoid bones Definition 1. enlarges concavity of the coffin joint 2. provides bearing surface Term navicular disease Definition contact of P2 and P3 during weight bearing Term surface of distal sesamoid bone that contacts P2 and P3 Definition articular surface Term surface of distal sesamoid bone that provides passage of DDF tendon-has navicular bursa between Definition palmar surface Term synovial sac that reduces friction and pressure from DDF tendon against navicular bone Definition navicular bursa Term suspensory apparatus of the fetlock that allows horses to stand much longer than other animals Definition stay apparatus Term function of stay apparatus Definition carries weight on tendons and ligaments, and deep fascia which do not tire. only a minimum of muscular energy is expended Term stabalization of shoulder joint by: Definition biceps tendon, lacertus fibrosus Term stabalization of elbow joint by: Definition triceps brachii, shoulder joint effect Term stabalization of carpus by: Definition carpal bones, palmar carpal ligaments Term stabalize fetlock joint by: Definition suspensory apparatus of fetlock (1. interosseous m., 2. sesamoid ligaments, 3. accessory ligaments, 4. DDF & SDF tendons) Term stabalize pastern joints by: Definition 1. straight sesamoid ligament, 2. axial and abaxial palmar ligaments, 3. DDF tendon (prevent overextention) Term 3 surfaces of distal phalanx Definition 1. parietal surface, 2. solar surface (flexor), 3. articular surface Term small sunken in groove on parietal surface of distal P3-where vessals run Definition parietal sulci Term process on at the top surface of distal P3, where CDE attaches Definition extensor process of distal P3 Term processes on each side of distal P3 Definition palmar process Term clinical significance of the hoof cartilage Definition can have ossification that can cause inflamation and pain Term other name for proximal phalanx (P1) Definition long pastern bone