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.
These extrinsic eye muscles are some of the fastest contracting and most precisely controlled skeletal muscles in the human body and function as Agonist & Antagonists pairs to move the eyeball. 1  Superior and Inferior Rectus Muscles, 2  Lateral and Medial Rectus Muscles,hese muscles are called extrinsic eye muscles because their origin points are outside of the eyeballs (in the orbit) and insertion points are on the outer surface of the Sclera.