Otters have long, slim bodies and relatively short limbs with webbed paws. Most have sharp claws on their feet and all except the sea otter have long, muscular tails. The 13 species range in adult size from 0.6 to 1.8 m (2.0 to 5.9 ft) in length and 1 to 45 kg (2.2 to 99.2 lb) in weight. The Oriental small-clawed otter is the smallest otter species and the giant otter and sea otter are the largest.
Atlantoaxial-synovial; pivot. The joint between the atlas and axis is called the atlanto-axial joint. It is comprised of the anterior portion of the ring of C1 and the odontoid process (or dens) of C2.This joint allows for about 50 percent of the side to side rotation of the head.ry and shake your head no, this is due to the pivot joint of the two vertebrae! this joint also known as atoaxoid joint. pivot. it is called the atlanto-axial joint. The joint between atlas and axis is called the atloaxoid joint. This joint is a pivot joint that allows the head to turn from side to side.
Synovial fluid is a fluid-like material that is present in many of the joints of the body. It serves the purpose of lubricating and nourishing certain parts of the joint.The joints in which this type of fluid is present are known as synovial joints, and these include the elbow, knee, shoulder, and hip joints, among others.o keep the synovial fluid in the same place around a joint, it is contained within the synovial membrane. The way in which the fluid is contained in the joint may be responsible for a phenomenon quite familiar to most of us, namely the cracking of joints.