What is ansa servikalis?

Ansa servikalis is a term used in anatomy to refer to the cervical loop of the spinal cord. This is the portion of the spinal cord that extends from the level of the first cervical vertebra to the second or third cervical vertebra. The ansa servikalis is responsible for controlling the muscles of the neck, larynx, and pharynx. It consists of two nerve fibers that loop around the internal carotid artery and form an arc-like structure. These nerve fibers are part of the cervical plexus, which is a network of nerves that innervate the muscles of the neck and upper shoulder region. The ansa servikalis is also known as the cervical nerve loop or the hypoglossal loop.