Sharks do lack real bones except for in there jaw. Without jaw bones sharks would not be able to survive because they would not be able to eat.
it is made of jelly
I think the animal with the strongest jaw is the crocodile.
There are many different sharks, but I do not know which could be called, "Regular". But, assuming that you are asking about the shark jaw of a fish, and not the mechanical tool called a, "Shark jaw", the common range is from 2 inches to 15 inches, in my opinion. (There are lots of foot-long sharks in people's aquariums, and of course, in the ocean; hence, the 2" size) Of course, the jaw of, say, a great white shark can be significantly larger, while the largest shark jaw known (a fossilized shark) is over 12 feet in size, fully opened. If you want to own this monster jaw, you can buy it for around $500 million, as I understand it.
I don't know perfectly what the answer is but what I do know is that they are HUGE I watched this show and a fully grown man could fit into the sharks mouth so I would say it is extremely big.
A combination of your tongue and jaw muscles
The muscles in your jaw are called the masseter muscles. These muscles are responsible for closing the jaw by raising the lower mandible.
No. It is part of your skull so it doesn't move like your lower jaw. Your lower jaw moves because it is a separate bone attached to the tendons and muscles that move it.
Sharks do lack real bones except for in there jaw. Without jaw bones sharks would not be able to survive because they would not be able to eat.
No, sharks are not jawless fishes. They are Cartilaginous fishes
The mandibular arch in a shark is located in the lower jaw, where the primary jaw muscles attach to help with opening and closing the jaw during feeding. Sharks have very flexible jaws that can protrude forward to better grasp and consume prey.
it is made of jelly
The upper jaw is attached to the skull and therefore can not move. It is the lower jaw that is able to move. Several muscles are involved, sometimes working together to cause the desired movement. The jaw can move in primarily three motions, down or open, up or closed, and laterally to the right or left. The muscles used to close the jaw are primarily the two Masseters, the two Medial Pterygoids, and the two Temporalis muscles. The Lateral Pterygiod muscles work with the Medial Pterygoid muscles on the same side to move the jaw laterally to the right or left, and if both Lateral Pterygoid muscles are contracted simultaneously, the lower jaw slides forward protruding the chin. The anterior fibers of the Temporalis also help in protruding the jaw and it's posterior fibers pull it back. Opening the jaw is a bit more complicated. The primary muscles used are the Digastric muscles. What complicates the situation is that they pull off the hyoid bone. The hyoid bone is stabilized by the Sternohyoid, Stylohyoid, Omohyoid, Thyrohyoid, and Mylohyoid muscle pairs. Without stabilization of the hyoid bone, the Digastric muscles could not work, so, indirectly they are involved in opening the lower jaw. When opening really wide, the Lateral Pterygoids pull the jaw forward in addition to the rotation caused by the Digastrics.
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It is the jaw.
the jaw bone
the jaw