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Bones are commonly described with the terms head, neck, shaft, body and base. The head of a bone usually refers to the distal end of the bone. The shaft refers to the elongated sections of long bone, and the neck the segment between the head and shaft (or body). The end of the long bone opposite to the head is known as the base.
In the Edo period (1603–1867), the hilts of naginata were often cut off and made into katana or wakizashi (short sword). This practice of cutting off the hilt of an ōdachi, tachi, naginata, or nagamaki and remaking it into a shorter katana or wakizashi due to changes in tactics is called suriage (磨上げ) and was common in Japan at the time.
The appendicular skeleton, comprising the arms and legs, including the shoulder and pelvic girdles, contains 126 bones, bringing the total for the entire skeleton to 206 bones. Infants are born with about 270 bones [ 4 ] with most of it being cartilage, but will later fuse together and decrease over time to 206 bones.
The nail matrix is the active tissue (or germinal matrix) that generates cells. The cells harden as they move outward from the nail root to the nail plate. [3] The nail matrix is also known as the matrix unguis, keratogenous membrane, or onychostroma. [4] It is the part of the nail bed that is beneath the nail and contains nerves, lymph, and ...
Most xiphe handles followed a two-piece construction (similar to a knife) using either native woods or, for more exotic imports, ebony and animal bone. The two slabs were attached to the tang of the sword, secured via two or three pins and then made smooth via filing giving the characteristic oval shape of a xiphos grip. Hand guards usually ...
Short bones are characterized by their multiple articular surfaces and their tendency to form movable joints with adjacent bones. The articular surfaces of short bones are covered with hyaline cartilage, similar to long bones. The outer surface of the bone, except for the articular surfaces, is covered by the periosteum. [6]
The head rests on the top part of the vertebral column, with the skull joining at C1 (the first cervical vertebra known as the atlas). The skeletal section of the head and neck forms the top part of the axial skeleton and is made up of the skull, hyoid bone, auditory ossicles, and cervical spine. The skull can be further subdivided into:
It is so named for its superficial resemblance to the Roman short sword of the same name, and is a vestige of the ancestral mollusc shell, which was external. [1] The gladius is located dorsally within the mantle and usually extends for its entire length. Composed primarily of chitin, it lies within the shell sac, which is responsible for its ...