Introductory Anatomy: Bones. Dr.
D.R.Johnson, Centre for Human Biology Anatomists talk about both bone and bones. The former is a type of connective tissue made up of cells suspended in a matrix: the collagenous matrix in bone just happens to be heavily impregnated with minerals. You will learn about bone cells elsewhere, but here is a picture of a cast of one, just to prove they exist .
This osteocyte has characteristic long processes which run through the bone putting it in touch both with other cells and with blood vessels and nerves. Determination of shape The shape and structure of bones is governed by many factors, genetic, metabolic and mechanical. Function As a lever. Origin of bone is again in two main forms. Classification of bones The skeleton is made up of many bones which change in proportion between man and his close relatives but are easily recognisable. Long bones Typical of limbs, and a good place to start. Skeletal System – Labeled Diagrams of the Human Skeleton. Labeled Skeletal System. Skeletal System – Posterior (Back) View. [Continued from above] . . . calcium, iron, and energy in the form of fat.
Finally, the skeleton grows throughout childhood and provides a framework for the rest of the body to grow along with it. Basic Knee Anatomy Video. Kate nash - skeleton song. Hannah Montana - Bone Dance. Whack-A-Bone. Differences-between-a-man-and-woman's-skeleton. Although there are many distinctions between the male and female skeleton, there is no method that is 100% accurate to determine the sex of someone simply from their bones.
The areas that are most distinctive are the pelvis and the skull. In addition, male bones are thicker and heavier than female bones. When comparing the skeletons, one can observe that most female features (with the exception of the pelvis) are smaller than male's. Pelvic bone: Wider in females to allow for easier childbirth (oval/round shaped)The first area one would look at to try to determine the sexMale pelvis is heavier and narrower (heart shaped)Female pelvis less massive and more delicateWoman of short stature tend to have broader pelvisesIn the 4th month of fetal development, characteristics of the pelvic bone in an individual begin to formIn the female, the upper end of the pelvis is tilted forward, while in males it is relatively vertical Skull (head features): Male Female Miscellaneous facts:
Bone Growth and Remodeling. During childhood, the long bones (in the arms, legs, and back) grow at the ends of the bones, whereas the flat bones (such as the skull) have a different pattern of growth.
Adult bone actually continues to expand, although very slowly. Bone also continually undergoes remodeling, replacing old bone with new bone. Ordinary activity causes microscopic cracks in the bone, and these are dissolved and replaced with new bone. Remodeling also allows bone to respond to changes in mechanical forces. Thus, living bone is totally different from the skeleton in the closet.
Don't miss the "continue" and "start" buttons in these Flash animations. ASBMR educational materials. MEDtropolis ® - Virtual Body. Eskeletons. Types of bone. How Bones Work" Hulton Archive/Getty ImagesA diagram showing back and side views of the human skeleton, circa 1900 The human body is an incredible machine.
It runs so well most of the time that we don't have to pay much attention to any of the life-sustaining systems that are in motion around the clock, humming along without our mindful involvement. Right now, your body is performing vital and complicated tasks nearly too numerous to comprehend. Fortunately, our bodies don't demand our comprehension in order to pump the heart, oxygenate blood, regulate hormone production, interpret sensory data and carry out every other process that keeps our biological boats afloat. In this article, we'll discuss one of the systems that makes life possible: the skeletal system. Skeletal System. Human Skeleton. Advertisement.
EnchantedLearning.com is a user-supported site. As a bonus, site members have access to a banner-ad-free version of the site, with print-friendly pages.Click here to learn more. (Already a member? Click here.) Human Skeletal System Index. Skeletal System. Lumens. Your Bones. Label the Spine Printout. Quiz Hub: Human Bones Game (iPad-Compatible) Kinesiology by Joint Action: Functional Groups.