Health

Lost in space: Astronauts struggle to regain bone density

Astronauts lose decades' worth of bone mass in space that many do not recover even after a year back on Earth, researchers said Thursday, warning that it could be a "big concern" for future missions to Mars.

Radiology & Imaging

Spinal fractures in the elderly are preventable with simple X-rays

Among older people, vertebral compression fractures are very common, and those with such fractures are at high risk of incurring new ones. Findings in a new thesis from the University of Gothenburg indicate that a simple ...

Diseases, Conditions, Syndromes

New blood biomarker identified for status of fatty liver disease

A MedUni Vienna study team has identified the role of a specific subtype of macrophages (white blood cells) in progressive non-alcoholic fatty liver disease. As part of the immune system, these cells have a protective function ...

Surgery

Iron-silicon alloy for implants that fix broken bones

Researchers from Skoltech and Sechenov University have 3D-printed and investigated the properties of samples of a porous iron-silicon alloy that the team considers promising for making implants for bone regeneration. The ...

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Bone

Bones are rigid organs that form part of the endoskeleton of vertebrates. They function to move, support, and protect the various organs of the body, produce red and white blood cells and store minerals. Bone tissue is a type of dense connective tissue. Because bones come in a variety of shapes and have a complex internal and external structure they are lightweight, yet strong and hard, in addition to fulfilling their many other functions. One of the types of tissue that makes up bone is the mineralized osseous tissue, also called bone tissue, that gives it rigidity and a honeycomb-like three-dimensional internal structure. Other types of tissue found in bones include marrow, endosteum and periosteum, nerves, blood vessels and cartilage. There are 206 bones in the adult human body and 270 in an infant.

Functions Bones have ten main functions:

Mechanical

Synthetic

Metabolic

This text uses material from Wikipedia, licensed under CC BY-SA