Tag: usmle

Shoulder Abduction Muscles: Medical Anatomy and USMLE

In this quick and easy lesson, we explain the shoulder muscles responsible for abducting the shoulder, the anatomy, the degrees of arm abduction for each shoulder muscle, and the nerves that innervate the shoulder abduction muscles.

The Collapsed Lung: Types of Pneumothorax

Pneumothorax also known as collapsed lung occurs when air is trapped in the pleural space. Trapped air causes a loss of negative pressure in the pleural cavity, reduces surface tension, and induces the lungs to collapse. There are 3 types of Pneumothorax or collapsed lungs: 1) Spontaneous 2) Traumatic, and 3) Tension Pneumothorax.

In this lesson, we learn the different types of pneumothorax (collapsed lung) and important terminology. USMLE