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English: A diagram showing how the cross section of the hair shaft differs in different hair types. A round cross section is found in straight hair types, an oval cross section in wavy or curly hair types, and a flattened oval cross section in curly or kinky hair types.
the hair shaft, which is the hard filamentous part that extends above the skin surface. It is made of multi-layered keratinized (dead) flat cells whose rope-like filaments provide structure and strength to it. The protein called keratin makes up most of its volume. A cross section of the hair shaft may be divided roughly into three zones.
Osteons on cross-section of a bone. In osteology, the osteon or haversian system (/ h ə ˈ v ɜːr. ʒ ən /; named for Clopton Havers) is the fundamental functional unit of much compact bone. Osteons are roughly cylindrical structures that are typically between 0.25 mm and 0.35 mm in diameter. [1] Their length is often hard to define, [2] but ...
Date/Time Thumbnail Dimensions User Comment; current: 20:00, 21 November 2021: 1,000 × 500 (480 KB): HynekJanac: Reverted to version as of 19:18, 21 November 2021 (UTC)
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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.
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I also don't like how the bone and the marrow is the same colour - I'm not claiming to be an expert, but I recently did a bone dissection and the bone is certainly more white than the marrow. I don't believe the epiphyseal plates are in the right spot, and to me the main diagram in the Epiphyseal plate article, which yours resembles, is misleading.