#1
Which of the following bones is NOT part of the shoulder girdle?
Humerus
ExplanationThe humerus is not part of the shoulder girdle; it is the arm bone.
#2
What is the primary function of the scapula?
To provide attachment for muscles that move the arm
ExplanationThe scapula serves as a point of attachment for muscles involved in arm movement.
#3
Which muscle is responsible for the abduction of the arm?
Deltoid
ExplanationThe deltoid muscle is primarily responsible for arm abduction, lifting the arm away from the body.
#4
Which muscle is NOT attached to the scapula?
Pectoralis major
ExplanationPectoralis major is not attached to the scapula; it connects to the sternum and clavicle.
#5
What is the name of the shallow depression on the lateral aspect of the scapula that articulates with the head of the humerus?
Glenoid fossa
ExplanationThe glenoid fossa articulates with the head of the humerus, forming the shoulder joint.
#6
What is the function of the acromion process?
To articulate with the clavicle
ExplanationThe acromion process articulates with the clavicle, forming the acromioclavicular joint.
#7
Which ligament helps stabilize the shoulder joint by preventing excessive inferior translation of the humeral head?
Glenohumeral ligament
ExplanationThe Glenohumeral ligament stabilizes the shoulder joint by limiting downward movement of the humeral head.
#8
What is the term for the condition in which the humeral head dislocates anteriorly from the glenoid fossa?
Anterior shoulder dislocation
ExplanationAnterior shoulder dislocation occurs when the humeral head displaces forward from the glenoid fossa.
#9
Which of the following ligaments reinforces the joint capsule anteriorly and is commonly injured in shoulder dislocations?
Glenohumeral ligament
ExplanationThe Glenohumeral ligament is commonly injured in shoulder dislocations, as it reinforces the anterior part of the joint capsule.