Shaft

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Shaft (medicine)

Shaft (pronounced: /ʃæft/) is a term used in medicine to refer to the long, slender part of a long bone between the two ends. The term is derived from the Old English word 'sceaft', meaning 'long, slender part'.

Etymology

The term 'shaft' comes from the Old English 'sceaft', which means 'long, slender part'. This term was used to describe the main part of various tools and weapons, and was later applied to anatomy to describe similar structures in the body.

Anatomy

In anatomy, a shaft refers to the main, elongated part of a long bone, which is distinct from the two ends, known as the epiphysis. The shaft of a bone is also known as the diaphysis. It is made up of compact bone and is covered by the periosteum. The shaft contains the medullary cavity, which houses the bone marrow.

Related Terms

  • Epiphysis: The end part of a long bone, initially growing separately from the shaft.
  • Diaphysis: The shaft or central part of a long bone.
  • Periosteum: A dense layer of vascular connective tissue enveloping the bones except at the surfaces of the joints.
  • Medullary cavity: The central cavity of bone shafts where red bone marrow and/or yellow bone marrow (adipose tissue) is stored.

See Also

External links

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