1
elaborate in shape and can not be classified into the other categories.
2
form within the tendons of muscles as these tendons pass over joints. Their size and distribution vary and they act as protection for tendons.
3
are equal in length, shape, and thickness. They are mainly composed of spongy bone.
4
smooth and thin. They protect the soft internal structures and provide attachments for muscles.
5
consist of a long shaft, cylindrical in cross sections and expanded at one end.
