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MICN201 Musculoskeletal (Upper Limb) Exam
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MICN201 Musculoskeletal (Upper Limb) ExamName the anterior surface or surfaces. - Ans. Subscapular fossa
Name the posterior surface or surfaces. - Ans. Supraspinous fossa, spine of scapula,
infraspinous fossa
How does it compare to the hip? Answer The capsule and its corresponding ligaments
are a lot looser, and there is a lot less bony congruence. Because of this, it is more
prone to dislocation but allows a greater range of movement.
What movements of the humerus occur at the shoulder joint? Answer Flexion, extension,
abduction, adduction, medial rotation and lateral rotation.
What are the muscles of the rotator cuff? -Answer Subscapularis, teres minor,
supraspinatus and infraspinatus.
Where is the subacromial bursa? -Answer Between the acromion, coracoacromial
ligament and deltoid, and the supraspinatus tendon/joint capsule.
What is the subacromial bursa used for? -Answer To allow smooth movement of the
supraspinatus tendon beneath the coracoacromial arch.
What are the bursae of the shoulder joint? -Answer Subacromial bursa, subscapular
bursa
Where is the subscapular bursa? - Ans It lies between the tendon of the subscapularis
and the neck of scapula.
, What does the coracoacromial arch comprise? - Ans The acromion, coracoid process
and coracoacromial ligament.
Which are the muscles intervening between the axial skeleton and shoulder girdle? -
Ans Levator scapulae, trapezius, rhomboid minor and rhomboid major.
What does upper fibres of trapezius do? - Ans Elevate the shoulder girdle and lateral
rotation of scapula
What is the action of middle fibres of trapezius? - Ans Retract the shoulder girdle
What is the action of lower fibres of trapezius? - Ans Depress the shoulder girdle and
lateral rotation of scapula
Which is the action of levator scapulae? - Elevation of the pectoral girdle, medial
rotation of the scapula
Which is the action of pectoralis minor? - Depression of pectoral girdle, medial rotation
of the scapula
Which are the actions of major and minor rhomboids? - Retraction of pectoral girdle,
medial rotation of scapula
what is the action of serratus anterior? - AnS It abducts the shoulder girdle and
produces lateral rotation of the scapula
Where is serratus anterior? - AnS It originates from a number of ribs with a common
origin point, and inserts into the medial border of the scapula.
Which muscles downwardly rotates the glenoid fossa? - AnS Levator scapulae,
rhomboid major, rhomboid minor and pectoralis major
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