To sign in to YouTube, you'll need to create a Google Account. A Google Account lets you use many YouTube features including Like, Subscribe, Watch Later, and Watch History. Subscribe to the YouTube Creators channel for the latest news, updates, and tips.

The respiratory system is composed primarily of the nose, oropharynx, larynx, trachea, bronchi, bronchioles, and lungs. The lungs further divide into individual lobes, which ultimately subdivide into over 300 million alveoli. The alveoli are the primary location for gas exchange.

ANATOMY OF RESPIRATORY SYSTEM Anatomically, respiratory tract is divided into upper (organ outside thorax - nose, pharynx and larynx) and lower respiratory tract (organ within thorax - trachea, bronchi, bronchioles, alveolar duct and alveoli).

Open SaveFrom.net and enter video or music URL to the input field at the top of the page. Click “Download” and you'll see the list with all available links and formats. Choose the desired format and get the file you need!