background preloader


Facebook Twitter

Chase White-Mack Fisher

We are the Chack whiher people and we come from the planet hoiya.

Human skeleton. A diagram of the human skeleton The human skeleton is the internal framework of the body.

Human skeleton

It is composed of 270 bones at birth[1][2][3] – this total decreases to 206 bones by adulthood after some bones have fused together. The bone mass in the skeleton reaches maximum density around age 30. The human skeleton can be divided into the axial skeleton and the appendicular skeleton. The axial skeleton is formed by the vertebral column, the rib cage and the skull. The human skeleton serves six major functions; support, movement, protection, production of blood cells, storage of ions and endocrine regulation. Divisions.

Bone volume. Bone remodeling. Bone tissue is removed by osteoclasts, and then new bone tissue is formed by osteoblasts.

Bone remodeling

Both processes utilize cytokine (TGF-β, IGF) signalling. Bone remodeling (or bone metabolism) is a lifelong process where mature bone tissue is removed from the skeleton (a process called bone resorption) and new bone tissue is formed (a process called ossification or new bone formation). These processes also control the reshaping or replacement of bone following injuries like fractures but also micro-damage, which occurs during normal activity.

Remodeling responds also to functional demands of the mechanical loading. In the first year of life, almost 100% of the skeleton is replaced. An imbalance in the regulation of bone remodeling's two sub-processes, bone resorption and bone formation, results in many metabolic bone diseases, such as osteoporosis.[2] Physiology[edit] Metabolic. Hematopoiesis. Mechanical. App- Skull. Explore, Dissect and Assemble a Human Skull Unparalleled interaction allows users to experience the subtle and complex spatial relationships of human anatomy first-hand.

App- Skull

Watch as game mechanics and rich content combine to provide the building blocks necessary for vital scientific understanding. How to Play Explore two distinct modes of interaction. Dissection - dissect and reassemble the bones at your own pace. Case Studys Skeletal System. Skeletal: Organs of the Skeletal System Flashcards. Skeletal System: Facts, Function & Diseases. The adult human skeletal system consists of 206 bones, as well as a network of tendons, ligaments and cartilage that connects them.

Skeletal System: Facts, Function & Diseases

The skeletal system performs vital functions — support, movement, protection, blood cell production, calcium storage and endocrine regulation — that enable us to survive. Animals with internal skeletons made of bone, called vertebrates, are actually the minority, as 98 percent of all animals are invertebrates, meaning they do not have internal skeletons or backbones. Human infants are born with about 270 bones, some of which fuse together as the body develops. By the time we reach adulthood, we have 206 bones, according to Arizona State University’s School of Life Sciences. The skeletons of adult males and females have some variation, primarily to accommodate childbirth. Prehistoric Van Goghs: Artists Used Pointillism 38,000 Years Ago [Image Gallery: The BioDigital Human] A typical bone has a dense and tough outer layer. Human Body: Anatomy, Facts & Functions.