Deltoid muscle

The video tutorial begins with a Simon Says game to introduce the deltoid muscle, highlighting its role in shoulder movements. It explains the anatomy of the deltoid, detailing its three parts: clavicular, acromial, and spinal, and their respective origins and functions. The tutorial also covers the axillary nerve's role in innervating the deltoid and discusses potential injuries to this nerve, including causes, symptoms, and management strategies. The video concludes with a brief overview of treatment options for axillary nerve injuries.

Which part of the deltoid muscle originates from the lateral third of the clavicle?

• Acromial part

• Clavicular part

• Spinal part

• Deltoid tuberosity

What is the insertion point of the deltoid muscle?

• Lateral third of the clavicle

• Deltoid tuberosity on the humerus

• Acromion of the scapula

• Spine of the scapula

Which nerve innervates the deltoid muscle?

• Radial nerve

• Median nerve

• Ulnar nerve

• Axillary nerve

What movement is performed by the acromial part of the deltoid muscle?

• Extension of the arm

• Abduction of the arm

• Flexion of the arm

• Internal rotation of the arm

What is a common symptom of axillary nerve injury?

• Improved arm abduction

• Increased muscle tone

• Flattened shoulder appearance

• Enhanced shoulder contour