Human anatomy > Muscular System > Neck Muscles The neck is the part of the human body that attaches the head to the rest of the body. It is made up of many muscles that are connected from the head to the torso of the body.
About.com Chemistry states that rigor mortis can take anywhere between 10 minutes to several hours to set in. Rigor mortis is the time after death when a body begins to stiffen, and the joints lock into place. Continue Reading.
How long it takes rigor mortis to set in depends on the size of the  dog. The stiffening of the muscles usually begins within three  hours of death and will affect small dog â¦ s much more quickly than  large dogs.