Cross sections of the upper extremity: Shoulder level

This video tutorial is the first in a series exploring the upper limb in cross section. It focuses on the shoulder region, detailing the bones, muscles, and neurovascular structures. The tutorial explains the importance of understanding cross sections for interpreting CT and MRI scans. It covers the anatomy of the scapula, clavicle, and humerus, as well as the muscles like the trapezius, pectoralis, and deltoid. The video also highlights the axillary artery, vein, and brachial plexus, emphasizing their roles in the shoulder's function.

What is the primary focus of the first video tutorial in the series?

• The cranial nerves

• The shoulder region

• The lower limb anatomy

• The abdominal cavity

Which bone is known as the collarbone?

• Clavicle

• Femur

• Scapula

• Humerus

Which muscle is responsible for wrapping around the rib cage and attaching to the scapula?

• Pectoralis major

• Deltoid

• Serratus anterior

• Trapezius

Which muscle group is essential for stabilizing the shoulder joint?

• Abdominals

• Rotator cuff

• Quadriceps

• Hamstrings

What is the primary arterial supply to the upper limb?

• Ulnar artery

• Radial artery

• Brachial artery

• Axillary artery

Which structure provides the bulk of venous drainage of the upper limb?

• Subclavian vein

• Axillary vein

• Cephalic vein

• Basilic vein

What is the role of the brachial plexus?

• Supporting the shoulder joint

• Innervating the upper limb

• Draining lymph from the upper limb

• Supplying blood to the upper limb