Which part of the Deltoid is responsible for flexion and medial rotation of the shoulder?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards

From $24.99Unlock all

Study for the Muscle Actions and Functions – Anatomy and Movement Test. Equip yourself with multiple choice questions, each with detailed explanations and hints. Prepare confidently for your exam!

Multiple Choice

Which part of the Deltoid is responsible for flexion and medial rotation of the shoulder?

Focusing on how the deltoid fibers pull the arm helps explain this. The deltoid has three parts with different pulls due to where they attach and how their fibers run. The anterior portion comes from the front edge of the clavicle and attaches to the humerus in a way that, when it contracts, it pulls the arm forward and rotates the humerus inward. This combination produces shoulder flexion (lifting the arm in front) and medial (internal) rotation. The middle portion mainly pulls the arm outward from the body to cause abduction, while the posterior portion extends the arm and rotates it outward. Because flexion and medial rotation are driven primarily by the anterior fibers, that part is responsible for both movements.

Which part of the Deltoid is responsible for flexion and medial rotation of the shoulder?

Study for the Muscle Actions and Functions – Anatomy and Movement Test. Equip yourself with multiple choice questions, each with detailed explanations and hints. Prepare confidently for your exam!

Which part of the Deltoid is responsible for flexion and medial rotation of the shoulder?

Get the latest from Examzify