BRS Gross Anatomy: Chapter 2 Bones and Joints of Upper Limb Exam 2023

First bone to begin ossification among shoulder girdle? - ANSWER-CLAVICLE Last bone to fuse among should girdle? - ANSWER-CLAVICLE Most common fracture site of CLAVICLE? - ANSWER-middle-third Shoulder girdle bone that ossifies intra-membranously? - ANSWER-CLAVICLE Key anatomical landmarks of SCAPULA - ANSWER-spine of scapula acromion coracoid process scapular notch What two structures originate or insert into the SPINE of Scapula - ANSWER-deltoid trapezius What two structures originate or insert into the *acromion* process of scapula? - ANSWER-deltoid trapezius The spine of scapula is a triangular shaped process that continues *laterally* as the ________? - ANSWER-acromion What three structures inserts or originates in coracoid process of scapula? - ANSWER-coraco-brachialis (origin) biceps brachii (origin) pectoralis minor (insertion) *Scapular Notch* Is bridged by the *superior transverse scapular ligament* and converted into a foramen that transmits the _________________ nerve - ANSWER-suprascapular nerve Which structure passes over the ligament therefore does not pass through the scapular notch - ANSWER-suprascapular artery Calcification of the superior transverse scapular ligament may trap or compress the suprascapular nerve affecting functions which TWO muscles? - ANSWER-supra-spinatus infra-spinatus What two structures inserts or originates in supra-glenoid (SG) and infra-glenoid tubercles (IG) of scapula - ANSWER-tendon of the long heads - biceps brachii (SG) triceps brachii (IG) What three structures originate or insert into the *greater tubercle* of humerus? - ANSWER-supra-spinatus infra-spinatus teres minor Which structures are likely compromised in a fracture of the *surgical neck* of HUMERUS - ANSWER-axillary nerve posterior humeral circumflex artery What structure originate or insert into the *lesser tubercle* of humerus? - ANSWER-sub-scapularis muscle Which three structures insert into the *intertubercular (bicipital) groove* of humerus? - ANSWER-pectoralis major (lateral lip) teres major (medial lip) latissimus dorsi (floor) Common site of humerus fracture? - ANSWER-surgical neck of humerus Which structure inserts into the *deltoid tuberosity* of the humerus? - ANSWER-deltoid muscle Which landmark on the humerus contains the radial nerve and separates the origin of the lateral head of the triceps above and the origin of the medial head below. - ANSWER-spiral groove Fracture of the humoral shaft may injure - ANSWER-- radial nerve - deep brachial artery Mid-shaft fracture of humerus can cause compression of axilla resulting damage to *radial nerve*. Clinical presentation includes: - ANSWER-Wrist drop: loss of elbow, wrist, and finger *extension*