Movement of the lower jaw opens and closes the mouth and also allows for the chewing of food.The lower set of teeth in the mouth is rooted in the lower jaw.A snake is an elongate reptile of the suborder Serpentes. Like all reptiles, snakes are ectothermic and covered in scales.
It is usually taken to mean relative movement between the upper jaw and the braincase. Most vertebrates have some form of kinetic skull. Cranial kinesis, or lack thereof, is usually linked to feeding. 1 Streptostyly; forwards and back movement of the quadrate, seen in most lizards, snakes and birds. 2  In dinosaurs, this is seen in Ankylosaurs, and possibly in many theropods, such as Tyrannosaurus, Coelophysis, and Allosaurus. From Wikipedia, the free encyclopedia. Cranial kinesis is the term for significant movement of skull bones relative to each other in addition to movement at the joint between the upper and lower jaw. 1 Streptostyly; forwards and back movement of the quadrate, seen in most lizards, snakes and birds. 2  In dinosaurs, this is seen in Ankylosaurs, and possibly in many theropods, such as Tyrannosaurus, Coelophysis, and Allosaurus. In non-venomous, constrictor snakes, the teeth are stationary; in snakes with long (grooved) fangs, the teeth fold backward into the mouth when not in use -- otherwise, the snake would puncture the bottom of its own mouth. Whereas the upper jaw of a human is fused to the skull and therefore unable to move, a snake's upper jaw is attached to its braincase by muscles, ligaments and tendons, allowing it some front-to-back and side-to-side mobility. A snake is an elongate reptile of the suborder Serpentes. Like all reptiles, snakes are ectothermic and covered in scales. All snakes are carnivorous and can be distinguished from legless lizards by the lack of eyelids, hind limbs and external ears. The 2,700+ species of snakes spread across every continent except Antarctica range in size from the tiny, 10 cm long thread snake to pythons and anacondas at 9 m (30 ft) long. Once a snake is ready to eat, it opens its mouth wide and begins to walk its lower jaw over the prey as its backward-curving teeth grip the animal -- one side of the jaw pulls in while the other side moves forward for the next bite. The snake drenches the prey with saliva and eventually pulls it into the esophagus. Whereas the upper jaw of a human is fused to the skull and therefore unable to move, a snake's upper jaw is attached to its braincase by muscles, ligaments and tendons, allowing it some front-to-back and side-to-side mobility. Some venom even gives the digestion process a kick-start. Snakes with this effective tool must have an equally effect way of getting the poison into an animal's system: fangs. At the front or back of their upper jaw, venomous snakes have two sharp teeth that are hollowed out to allow the poison to pass through. Whereas the upper jaw of a human is fused to the skull and therefore unable to move, a snake's upper jaw is attached to its braincase by muscles, ligaments and tendons, allowing it some front-to-back and side-to-side mobility. Mandible. The mandible, or lower jaw, is the bone that forms the lower part of the skull, and along with the maxilla (upper jaw), forms the mouth structure. Movement of the lower jaw opens and closes the mouth and also allows for the chewing of food. The lower set of teeth in the mouth is rooted in the lower jaw Snakes are elongated, legless, carnivorous reptiles of the suborder Serpentes that can be distinguished from legless lizards by their lack of eyelids and external ears. Like all squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales. Because snakes cannot bite or tear their food to pieces, they must swallow prey whole. The body size of a snake has a major influence on its eating habits. Smaller snakes eat smaller prey. Juvenile pythons might start out feeding on lizards or mice and graduate to small deer or antelope as an adult, for example.
https://en.wikipedia.org/wiki/Cranial_kinesis https://en.wikipedia.org/wiki/Cranial_kinesis http://animals.howstuffworks.com/snakes/snake4.htm http://psychology.wikia.com/wiki/Snakes http://animals.howstuffworks.com/snakes/snake4.htm http://animals.howstuffworks.com/snakes/snake4.htm http://www.healthline.com/human-body-maps/mandible https://en.wikipedia.org/wiki/Snake
jaw points of movement snakes definition