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 Deep Neck Flexors What are the deep neck flexor muscles? The deep neck flexors are a group of muscles that are responsible for forward bending and side-bending of the neck.These muscles are also very important for supporting the weight of the head against gravity and stabilizing the neck during various body movements.eep Neck Flexor Exercises. The deep neck flexors can be activated by a simple nodding movement of the head on the neck called a chin-tuck. The tucking the chin activates the deep flexor muscles and moves the chin closer to the âAdamâs appleâ (Thyroid cartilage).