Bones questions

The slender snipe eel (Nemichthys scolopaceus) is a fish that can weigh only a few ounces, yet reach 5 feet or 1.5 m in length. Features include a bird-like beak with curving tips, covered with tiny hooked teeth, which they use to sweep through the water to catch shrimp and other crustaceans. It has more vertebrae in its backbone than any other animal, around 750.

The cervical spine is made up of 7 vertebrae. The first 2, C1 and C2, are highly specialized and are given unique names: atlas and axis, respectively. By the atlanto-axial joint, it forms the pivot upon which the first cervical vertebra (the atlas), which carries the head, rotates.

Humans have 7 cervical, 12 thoracic, 5 lumbar, 5 fused sacral, and 3 to 5 fused caudal vertebrae (together called the coccyx). The vertebral column is characterized by a variable number of curves.

Unlike human arms, cat forelimbs are attached to the shoulder by free-floating clavicle bones, which allows them to pass their body through any space into which they can fit their heads.

The sphenoid bone is an unpaired bone of the neurocranium. It is situated in the middle of the skull towards the front, in front of the temporal bone and the basilar part of the occipital bone. Its shape somewhat resembles that of a butterfly or bat with its wings extended.

The mandible is the largest, strongest and lowest bone in the human face. It forms the lower jaw and holds the lower teeth in place. The mandible is the only movable bone of the skull, not counting the ossicles of the middle ear.

The phalanges are digital bones in the hands and feet of most vertebrates. In primates, the thumbs and big toes have two phalanges while the other digits have three phalanges. Fingerbones and toebones are what people commonly call them, knuckles are the joint between the phalange bones, and femurs are the upper thigh bones.

Synapsids were the largest terrestrial vertebrates in the Permian period, 299 to 251 million years ago, although some of the larger pareiasaurs at the end of Permian could match them in size.

The human foot consists of 26 bones and 33 joints.

Pneumatic bones are very light, as they contain hollow cells filled with mucous membrane and air.Found in close proximity to nasal cavity. In the human body, pneumatic bones are found only in the skull (the frontal bone, maxilla, sphenoid, ethmoid bone, temporal bone)