WELCOME TO THE SKELETAL PAGE. THIS PAGE CONTAINS ALL YOU NEED TO KNOW ABOUT THE SKELETON AND BONES
BONES
Some of the bones in the human body
Just like muscles, there's alot of bones in the human body. There are at
least 206 bones in a fully grown adult, but there's about 350 bones in a baby
when they are first born. When the baby grows up, it loses around 150
bones. A bone is a type of connective tissue that is strong as steel, but as
light as aluminum. Bones are made up of specialized cells and proteins,
and the bone are neither dead or immobile. Bones break down all the time,
quit frequently actually, the tricky part is that they have to rebuild itself
when it does. An example is when you break a bone, the reason why you
get a cast is because it helps to keep the bone in to place so the bone
can repair itself.
least 206 bones in a fully grown adult, but there's about 350 bones in a baby
when they are first born. When the baby grows up, it loses around 150
bones. A bone is a type of connective tissue that is strong as steel, but as
light as aluminum. Bones are made up of specialized cells and proteins,
and the bone are neither dead or immobile. Bones break down all the time,
quit frequently actually, the tricky part is that they have to rebuild itself
when it does. An example is when you break a bone, the reason why you
get a cast is because it helps to keep the bone in to place so the bone
can repair itself.
THE STRUCTURE OF A BONE
If you look inside a bone, along the centeral shaft, is the medullary
canal or the marrow cavity. The marrow cavity contains red bone marrow,
yellow marrow, and blood vessels. The red bone marrow produces
blood cells, the yellow marrow is mostly fatty tissue. The marrow is
surrounded by spongy bone, the honeycomb-like cavities which also
has marrow in it. Around the compact, hard, dense, and strong bone
is small canals, which connect the marrow cavity with the periosteum
(a membrane covering the bones surface). Bone tissue is made up of
specialized cells and protein fibers, woven onto a maze of water, mineral
salts, and other substances. Bone cells include osteoblasts, osteocytes
and osteoclasts. Osteoblasts clacify bone as it forms, osteocytes maintain healthy bone structure and osteoclasts absorb bone tissue where it's degenerating
or not needed.
canal or the marrow cavity. The marrow cavity contains red bone marrow,
yellow marrow, and blood vessels. The red bone marrow produces
blood cells, the yellow marrow is mostly fatty tissue. The marrow is
surrounded by spongy bone, the honeycomb-like cavities which also
has marrow in it. Around the compact, hard, dense, and strong bone
is small canals, which connect the marrow cavity with the periosteum
(a membrane covering the bones surface). Bone tissue is made up of
specialized cells and protein fibers, woven onto a maze of water, mineral
salts, and other substances. Bone cells include osteoblasts, osteocytes
and osteoclasts. Osteoblasts clacify bone as it forms, osteocytes maintain healthy bone structure and osteoclasts absorb bone tissue where it's degenerating
or not needed.
JOINTS
Joints are very important to the muscloskeletal system, without joints, our bones wouldn't be
be able to connect together. A joint is the site of which 2 bones meet together, joints can be classified
according to their structure and by the types of movement they allow. The human body has over
300 different joints.
be able to connect together. A joint is the site of which 2 bones meet together, joints can be classified
according to their structure and by the types of movement they allow. The human body has over
300 different joints.
Bibliography
The musculoskeletal system. Retreived from http://www.googleimages.com
(February 11, 2013) x4
Flexing arm muscles. Retreived from http://www.googleimages.com
(February 13, 2013) x3
Nion signs. Retreived from http://www.googleimages.com
(February 15, 2013)
Bones/joints. Retreived from http://www.googleimages.com
(February 19, 2013) x7
Levers/levers in your body. Retreived from http://www.googleimages.com
(February 21, 2013) x6
Parker. S (2009)The Concise Human Body Book. Dorling Kindersely: Tourmaline Editions Inc.
Maurice. D, Ted. G, Chuck. H, Douglas. H, Dennis. P (2009) Science And Technology Perspectives- Locomotion And Movement. Chicago: Nelson
(February 11, 2013) x4
Flexing arm muscles. Retreived from http://www.googleimages.com
(February 13, 2013) x3
Nion signs. Retreived from http://www.googleimages.com
(February 15, 2013)
Bones/joints. Retreived from http://www.googleimages.com
(February 19, 2013) x7
Levers/levers in your body. Retreived from http://www.googleimages.com
(February 21, 2013) x6
Parker. S (2009)The Concise Human Body Book. Dorling Kindersely: Tourmaline Editions Inc.
Maurice. D, Ted. G, Chuck. H, Douglas. H, Dennis. P (2009) Science And Technology Perspectives- Locomotion And Movement. Chicago: Nelson