1 Tire width is the width of the tire measured in mm from sidewall to sidewall. This tire width is 225 mm.  Aspect ratio is the ratio of the height of the tire's cross-section to its width. On our example, 60 means that the height is equal to 60% of the tire's width.
The infrahyoid muscles or strap muscles are a group of four paired muscles in the anterior neck below the hyoid bone. They are responsible for depressing the hyoid during swallowing. Each muscle is supplied by different nerves from the ansa cervicalis.
extrinsic muscles. Definitions: 1. muscles that arise outside of, but act on, the structure under consideration. For example, those muscles operating the hand but having fleshy bellies located in the forearm.The definition information for extrinsic muscles is provided by Stedman's.You can search our medical dictionary here.efinitions: 1. muscles that arise outside of, but act on, the structure under consideration. For example, those muscles operating the hand but having fleshy bellies located in the forearm. The definition information for extrinsic muscles is provided by Stedman's. You can search our medical dictionary here.