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.
The extrinsic muscles of the shoulder originate from the trunk, and attach to the bones of the shoulder â the clavicle, scapula or humerus. They are located in the back, and are also known as the superficial back muscles. The muscles are organised into two layers â a superficial layer and a deep layer. Superficial.