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.
Neck Muscles. The neck is the part of the human body that attaches the head to the rest of the body. It is made up of many muscles that are connected from the head to the torso of the body. The purpose of the neck muscles is either to allow for neck movement or to provide structural support for the head. The motion is either rotation, meaning side-to-side; lateral flexion, meaning ear to shoulder; flexion, meaning chin to sternum; and hypertension, meaning looking up. Here is the list of muscles in the neck and head area: 1  Longus colli and capitis â this is found in the anterior neck area and is used for flexion. 2  Infrahyoid and suprahyoid â these muscles are for opening the jaw and for flexing the neck, and are found in the anterior neck area.