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ATSU SOMA Joints of the Upper Limb and Knee correctly answered graded A+ passed
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ATSU SOMA Joints of the Upper Limband Knee
Movement of the pectoral girdle involves which three joints? - correct answer ✔✔1. Sternoclavicular
2. Acromioclavicular
3. Glenohumeral
The scapulothoracic and glenohumeral movements occur in a __________ ratio where if there is a 120
degree elevation at the glenohumeral joint, there is a 60 degree elevation at the scapulothoracic joint.
This is known as the ________________________________ - correct answer ✔✔2:1
scapulohumeral rhythm
The important movements of the pectoral girdle are: - correct answer ✔✔1. elevation and depression
2. protraction (lateral or forward movement of the scapula)
3. retraction (medial or backward movement of the scapula)
4. rotation
The ________________________ joint is a saddle type of joint that functions as a ball-and-socket joint.
It's divided into two compartments by an articular disc. The disc is a great shock absorber of forces
transmitted along the clavicle, yet fracture of the clavicle is still common (dislocation is rare). It is the
only articulation between the upper limb and axial skeleton - correct answer ✔✔sternoclavicular (SC)
The _____________________________ strengthen the sternoclavicular joint capsule superiorly. - correct
answer ✔✔interclavicular ligament
The ______________________ anchors the inferior surface of the sternal end of the clavicle to the 1st
rib and its costal cartilage, limiting elevation of the pectoral girdle - correct answer ✔✔costoclavicular
ligament
,The sternoclavicular joint is capable of performing which type of movements? - correct answer
✔✔circumduction
elevation
rotation
The sternoclavicular joint is supplied by the __________________________ and __________________
arteries - correct answer ✔✔internal thoracic
suprascapular
The sternoclavicular joint is innervated by branches of the __________________________ and the
________________________ - correct answer ✔✔medial supraclavicular nerve
nerve to the subclavius
The __________________________ joint is a plane synovial joint located 2-3 cm from the "point" of the
shoulder formed by the lateral part of the acromion - correct answer ✔✔acromioclavicular joint
The joint capsule of the acromioclavicular joint is relatively weak, but it is strengthened by fibers of the
__________________ muscle - correct answer ✔✔trapezius
The _________________________ ligament extends from the acromion to the clavicle and strengthens
the AC joint superiorly. The integrity of the joint is maintained by extrinsic ligaments, distant from the
joint itself - correct answer ✔✔acromioclavicular
The _______________________ ligament is a strong pair of bands that unites the coracoid process of
the scapula to the clavicle, anchoring the clavicle to the coracoid process. This ligament has two
ligaments, the conoid and trapezoid ligaments. - correct answer ✔✔coracoclavicular
The more vertical and medially placed ___________________ ligament of the coracoclavicular ligament
is an inverted triangle which has its apex inferiorly where it is attached to the root of the coracoid
, process. Its wide attachment is to the conoid tubercle on the inferior surface of the clavicle - correct
answer ✔✔conoid
The nearly horizontal _____________________ ligament of the coracoclavicular ligament is attached to
the superior surface of the coracoid process and extends laterally to the trapezoid line on the inferior
surface of the clavicle. - correct answer ✔✔trapezoid
The acromioclavicular joint produces a ______________________ movement - correct answer
✔✔rotation
The acromioclavicular joint is supplied by the ______________________ and _____________________
arteries - correct answer ✔✔suprascapular
thoraco-acromial
The acromioclavicular joint is innervated by the ____________________, _______________________
and _____________________ nerves. - correct answer ✔✔lateral pectoral
axillary
cutaneous lateral supraclavicular
The ________________________ joint is a ball-and-socket synovial joint that permits a wide range of
motion, however, its mobility make it relatively unstable - correct answer ✔✔glenohumeral
The joint capsule of the glenohumeral joint is attached medially to the ____________________ and
laterally to the neck of the _____________________ - correct answer ✔✔glenoid cavity
humerus
The joint capsule of the glenohumeral joint has two openings: - correct answer ✔✔1. An opening
between tubercles of the humerus for passage of the tendon of the long head of the biceps brachii
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