The longus colli muscle is found on the anterior side of the vertebral column in the neck. The muscle connects the atlas with the third thoracic vertebra. Broader in the middle than at the ends, the muscle contains three sections: the superior oblique, the inferior oblique and a vertical portion. The superior or upper oblique connects the anterior arch of the atlas with the transverse processes third, fourth, and fifth cervical vertebra with a narrow tendon. The inferior or lower oblique connects the fifth and sixth transverse processes with the first two thoracic vertebrae. This section of the muscle is thicker and arises in the front of the bottom of the muscle. The vertical portion of the muscle connects the first two thoracic vertebrae with the front of the second, third, and fourth cervical vertebrae. The longus colli muscle turns and twists the neck anteriorly. As thus, the tendons of this muscle may suffer acute calcific tendonitis if the patient has been involved in a car accident. A cause of the tendonitis is a rear-end whiplash injury and treated with proper medical therapy.