PSI Barbering Practice Exam

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Prepare for the PSI Barbering Exam with comprehensive quizzes and study materials. Learn with flashcards and multiple choice questions, each question includes hints and explanations. Get ready to excel in your exam!

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What is the largest bone of the arm that extends from the shoulder to the elbow?

Radius
Ulna
Scapula
Humerus

The correct answer is: Humerus

The largest bone of the arm, which extends from the shoulder to the elbow, is the humerus. This long bone plays a crucial role in the structure and function of the upper limb. The humerus connects at the shoulder with the scapula (shoulder blade) and at the elbow with the radius and ulna (the two forearm bones). Its length and strength allow it to support a significant range of motion in the arm, which is vital for various movements and tasks, from lifting to throwing. The humerus is involved in many joints and muscle connections, making it integral to the upper body's functionality. Understanding the roles and connections of the humerus is essential for grasping how the skeletal system supports movement and coordination in the human body.