Respiratory

The lungs are paired organs in the thoracic cavity separated by the mediastinum. The right lung has three lobes upper, middle, low...

The diaphragm is the primary muscle of inspiration, a dome shaped sheet separating the thoracic and abdominal cavities. It origina...

The vocal cords, more precisely called the vocal folds, are two infoldings of mucous membrane stretched across the larynx from the...

The bronchi are the conducting airways branching from the trachea. The right main bronchus is wider, shorter, and more vertical th...

The trachea, or windpipe, is a tube that runs from the bottom of the larynx down into the chest, where it divides at the carina in...

The larynx, or voice box, is a framework of cartilages, muscles, and ligaments at the top of the trachea. Its largest cartilage, t...

The pharynx, or throat, is a muscular tube that extends from the base of the skull to the level of the cricoid cartilage, where it...

Alveoli are tiny, thin walled air sacs clustered at the ends of the respiratory bronchioles, and the lungs contain hundreds of mil...

The pleura is a thin serous membrane with two layers. The visceral pleura covers the surface of each lung and dips into the fissur...

The paranasal sinuses are four paired, air filled cavities in the bones of the face and skull, named after the bones that contain ...

The epiglottis is a leaf shaped flap of elastic cartilage covered with mucous membrane, attached to the front of the larynx and pr...