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.
1 The rhomboid major and the rhomboid minor act to press the scapula against the thoracic wall, retracting the scapula towards the spine.  The deltoid is a complex muscle that forms the rounded edge of the shoulder and participates in many articulations of the shoulder joint.