The neck is the part of the body that connects the head to the torso. It contains important structures such as the cervical vertebrae, which provide support and flexibility. The neck also houses vital components like the trachea and esophagus, which are essential for breathing and swallowing, respectively. Muscles in the neck, such as the sternocleidomastoid, help with movement and stability. The neck is also home to major blood vessels, including the carotid arteries and jugular veins, which supply blood to and from the brain. Overall, the neck plays a crucial role in both movement and vital functions.