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.
A synovial joint, otherwise known as a diarthrosis, is the most flexible type of joint, seeing as it achieves its range of movement at the point of contact between the articulating bones. This mechanical area forms the meeting point between the radius and ulna of the forearm with the humerus of the brachial region.It is deemed a compound joint because the joint cavity is continuous with the radioulnar joint, as well as the contact points between these bones and the humerus respectively.oints. The humeroulnar joint is the contact point of the humerus and the ulna. It has a single axis and is therefore a synovial hinge joint that simply opens and closes. The articulating surfaces can be found between the trochlea of the humerus and the trochlear notch of the ulna.