Between which two bones is the Acromioclavicular joint?
Ulna and Scapula.
Scapula and Clavicle.
None.
Humerus and Scapula.
The Correct Answer is B
The acromioclavicular joint is the articulation between the acromion of the scapula and the acromial end of the clavicle.
It is a plane synovial joint that allows movements of the shoulder girdle. Choice A is incorrect because the ulna and scapula do not form a joint.
The ulna is a bone of the forearm that articulates with the humerus and radius. Choice C is incorrect because none is not a valid option.
There is a specific joint between two bones that is called the acromioclavicular joint.
Choice D is incorrect because the humerus and scapula form a different joint, called the glenohumeral joint.
This is a ball-and-socket synovial joint that allows movements of the shoulder.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The skeletal system has five main functions: support, movement, protection, mineral and fat storage, and blood cell formation.
All of the other choices are primary functions of the skeletal system.
Choice B is incorrect because storing inorganic salts is one of the functions of the skeletal system.
The bone tissue acts as a reservoir for minerals like calcium and phosphorus.
Choice C is incorrect because attachment sites for muscles is one of the functions of the skeletal system.
Bones facilitate movement by serving as points of attachment for muscles.
Choice D is incorrect because support and protection is one of the functions of the skeletal system.
Bones provide a scaffold that supports the body and protects the internal organs.
Correct Answer is ["Surgical neck of the humerus"]
Explanation
The surgical neck of the humerus is a part of the bone that lies below the greater and lesser tubercles and is a common site for fractures.
It is the most constricted part of the humerus and marks the transition between the expanded proximal end and the narrower shaft.
The neck is located between the tuberosities and is the site of attachment for the capsule of the shoulder joint.
The axillary nerve and posterior circumflex humeral artery also pass through the surgical neck.
The anatomy of the surgical neck is important in the diagnosis and treatment of shoulder injuries and fractures.
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