Multiple Choice
Which of the following correctly labels the pathway for the cardiac conduction system?
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1. Introduction to Anatomy & Physiology
Introduction to Organ Systems
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Which of the following structures is NOT a part of the glenohumeral (shoulder) joint?
A
Glenoid cavity
B
Acetabulum
C
Articular capsule
D
Humeral head
Verified step by step guidance1
Step 1: Begin by understanding the anatomy of the glenohumeral (shoulder) joint. The glenohumeral joint is a ball-and-socket joint formed by the articulation of the humeral head (the ball) and the glenoid cavity of the scapula (the socket).
Step 2: Review the components of the glenohumeral joint. Key structures include the glenoid cavity, humeral head, articular capsule, and associated ligaments and muscles that stabilize the joint.
Step 3: Identify the term 'acetabulum' in the options. The acetabulum is part of the hip joint, not the shoulder joint. It is the socket in the pelvis that articulates with the femoral head to form the hip joint.
Step 4: Compare the acetabulum to the other options provided. The glenoid cavity, humeral head, and articular capsule are all integral parts of the glenohumeral joint, whereas the acetabulum is anatomically unrelated to the shoulder joint.
Step 5: Conclude that the acetabulum is the correct answer because it is not a structure associated with the glenohumeral (shoulder) joint.
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