SGU MSK COMPREHENSIVE SOLUTION
2026 QUESTIONS WITH SOLUTIONS
GRADED A+
>> Subclavius mm.
Answer: Extra pectoral mm. in the equine
>> What is the action of the subcalvius mm?
Answer: Complements the action of the deep pectoral
>> What is the innervation of the subclavius mm?
Answer: Pectoral nerve
>> What is the innervation of the supraspinatus and infraspinatus mm?
Answer: Suprascapular nerve
>> CLINICAL: Sweeney
Answer: --A condition seen in horses due to an injury of the suprascapular nerve due to a lack of the
acromion process protecting the nerve
>> Origin of Biceps Brachii mm.
Answer: Supraglenoid tubercle by means of a short, broad and largely fibrocartilagenous tendon that is
molded on the intertubercular groove and tubercles of humerus
>> What function is the fibrocartilaginous tendon replacing in the origin of biceps brachii?
Answer: Absorbs pressure where a sesamoid bone normally would do the job
>> Insertion of Biceps Brachii mm?
Answer: Splits into two parts
>> What three joints is the biceps brachia crossing?
Answer: 1. Scapulohumeral
>> Lacertus Fibrosus
Answer: Fibrous strand (cartilaginous tendon), extending along the length of biceps brachii m. and
blends distally with the extensor carpi radialis
>> Extensor mm. of Forelimb Elbow
Answer: --Triceps brachii mm.
, >> Triceps Brachii mm.
Answer: --Most important extensor of the elbow
>> Origin: Triceps Brachii mm.
Answer: Long: Caudal border of scapula
>> Insertion: Triceps brachii mm.
Answer: All 3 heads insert on olecranon
>> Action: of Triceps Brachii mm.
Answer: Extension of limb (cubital)
>> Why is the triceps brachii a key mm. of the forelimb?
Answer: --Weight bearing, as it fixes the elbow joint in an extended position to bear weight
>> Where do the extensor mm. of the carpus and digits arise from and insert?
Answer: Craniolateral
>> CLINICAL: Capped Bursa
Answer: Inflammation of subcutaneous bursa over the olecranon process
>> How are the extensor mm. of the carpus and digits secured in their passage?
Answer: Secured in passage over carpus by extensor retinaculum and lubricated by synovial sheaths
and bursae
>> What innervates the triceps mm?
Answer: Radial Nerve
>> What are the Extensor mm. of carpus and digits?
Answer: 1. Extensor carpi radialis
>> What is the Extensor Carpi Obliquus mm?
Answer: AKA Abductor digiti longus 1
>> What is important to note about the flexor tendon attachments?
Answer: They always have extra accessory ligaments, or check ligaments
>> What other action does the ulnaris lateralis mm do?
Answer: Flexion of carpus while extending the digits
>> What nerve innervates the extensor mm. of the carpus and digits?
2026 QUESTIONS WITH SOLUTIONS
GRADED A+
>> Subclavius mm.
Answer: Extra pectoral mm. in the equine
>> What is the action of the subcalvius mm?
Answer: Complements the action of the deep pectoral
>> What is the innervation of the subclavius mm?
Answer: Pectoral nerve
>> What is the innervation of the supraspinatus and infraspinatus mm?
Answer: Suprascapular nerve
>> CLINICAL: Sweeney
Answer: --A condition seen in horses due to an injury of the suprascapular nerve due to a lack of the
acromion process protecting the nerve
>> Origin of Biceps Brachii mm.
Answer: Supraglenoid tubercle by means of a short, broad and largely fibrocartilagenous tendon that is
molded on the intertubercular groove and tubercles of humerus
>> What function is the fibrocartilaginous tendon replacing in the origin of biceps brachii?
Answer: Absorbs pressure where a sesamoid bone normally would do the job
>> Insertion of Biceps Brachii mm?
Answer: Splits into two parts
>> What three joints is the biceps brachia crossing?
Answer: 1. Scapulohumeral
>> Lacertus Fibrosus
Answer: Fibrous strand (cartilaginous tendon), extending along the length of biceps brachii m. and
blends distally with the extensor carpi radialis
>> Extensor mm. of Forelimb Elbow
Answer: --Triceps brachii mm.
, >> Triceps Brachii mm.
Answer: --Most important extensor of the elbow
>> Origin: Triceps Brachii mm.
Answer: Long: Caudal border of scapula
>> Insertion: Triceps brachii mm.
Answer: All 3 heads insert on olecranon
>> Action: of Triceps Brachii mm.
Answer: Extension of limb (cubital)
>> Why is the triceps brachii a key mm. of the forelimb?
Answer: --Weight bearing, as it fixes the elbow joint in an extended position to bear weight
>> Where do the extensor mm. of the carpus and digits arise from and insert?
Answer: Craniolateral
>> CLINICAL: Capped Bursa
Answer: Inflammation of subcutaneous bursa over the olecranon process
>> How are the extensor mm. of the carpus and digits secured in their passage?
Answer: Secured in passage over carpus by extensor retinaculum and lubricated by synovial sheaths
and bursae
>> What innervates the triceps mm?
Answer: Radial Nerve
>> What are the Extensor mm. of carpus and digits?
Answer: 1. Extensor carpi radialis
>> What is the Extensor Carpi Obliquus mm?
Answer: AKA Abductor digiti longus 1
>> What is important to note about the flexor tendon attachments?
Answer: They always have extra accessory ligaments, or check ligaments
>> What other action does the ulnaris lateralis mm do?
Answer: Flexion of carpus while extending the digits
>> What nerve innervates the extensor mm. of the carpus and digits?
