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Topic: Axial skeleton


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In the News (Sat 14 Nov 09)

  
  An Overview   (Site not responding. Last check: 2007-10-14)
The axial skeleton consists of the skull, the spine, the ribs and the sternum (breastbone) and includes 80 bones.
There are only minor differences between the skeletons of the male and the female: the men's bones tend to be larger and heavier than corresponding women's bones and the women's pelvic cavity is wider to accommodate childbirth.
The skeleton is not just a movable frame, however; it is an efficient factory which produces red blood cells from the bone marrow of certain bones and white cells from the marrow of other bones to destroy harmful bacteria.
www.innerbody.com /text/skelov.html   (273 words)

  
 The axial skeleton Chapter 7   (Site not responding. Last check: 2007-10-14)
The axial skeleton (shown in Figure 7-1a and highlighted in Figure 7-1b) forms the longitudinal axis of the body.
The rest of the axial skeleton is subdivided on the basis of vertebral structure.
The thracic cage, or skeleton of the chest, consists of the thoracic vertebrae, the ribs, and the sternum (breastbone) (Figure 7-22a, and b).
campus.udayton.edu /~brahler/axial_skeleton_chapter_7.htm   (8647 words)

  
 Electronic textbook on the Human Skeleton
The skeleton is the internal structure that holds the human body up and with the help of the muscular system allows us to move.
The axial skeleton is comprised of the 80 bones in the skull, ribs, and sternum.
This simple quiz on the human skeleton includes questions about the number of bones in the human body, which is the smallest human bone, and which bone is most frequently broken.
www.ecsu.ctstateu.edu /depts/edu/textbooks/skeleton.html   (1062 words)

  
 Skeletal System
The appendicular skeleton's upper portion includes all the bones of the arms and hands plus the pectoral girdle, which is formed by the collar bone (clavicle) and the shoulder blade (scapula).
The appendicular skeleton's lower portion includes all bones of the legs and feet plus the pelvic girdle, which attaches the lower appendages to the axial skeleton at the sacrum.
The axial skeleton is composed of the entire vertebral column including the sacrum and tailbone (coccyx), the skull, the ribs and sternum, and the hyoid bone which is located under the lower jaw.
www2.pvc.maricopa.edu /tutor/bio/bio160/skeletal.html   (599 words)

  
 Axial skeleton - Wikipedia, the free encyclopedia
The axial skeleton consists of the bones in the head and trunk of the human body.
It is composed of five parts; the human skull, the ossicles of the inner ear, the hyoid bone of the throat, the chest, and the vertebral column.
This article mainly deals with the axial skeletons of humans; however, it is important to understand the evolutionary lineage of the axial skeleton.
en.wikipedia.org /wiki/Axial_skeleton   (193 words)

  
 The Formation of the Appendicular Skeleton
The transition from aquatic to terrestrial life is a major concern in evolutionary theory; therefore the transformation of the appendicular skeleton from fin to terrestrial limb is of special interest.
Appendicular skeletons are homologous with a longitudinal half of the axial skeleton.
And more importantly, in the lungfish-coelacanth-rhipidistian lineages the axial ribs show no gaps, and the limbs are complex and show a fading internal bilateral symmetry which should not be present if their parts had migrated from the axial skeleton.
home.inreach.com /cliff_lundberg/appskel.html   (806 words)

  
 Axial Arthritis
In the appendicular skeleton, one is mostly concerned with the diarthrodial synovial joints.
This chronic inflammatory disorder of unknown etiology principally affects the axial skeleton.
An overwhelming predilection exists for involvement of the axial skeleton, especially the sacroiliac, apophyseal, discovertebral, and costovertebral articulations.
www.rad.washington.edu /mskbook/axialarthritis.html   (3666 words)

  
 Human skeleton - Wikipedia, the free encyclopedia
The human skeleton is made of individual or joined bones (such as the skull), supported and supplemented by a structure of ligaments, tendons, muscles, cartilage and other organs.
The longest and heaviest bone in the body is the femur and the smallest is the stapes bone in the middle ear.
The human skeleton can be divided into the axial skeleton and the appendicular skeleton.
en.wikipedia.org /wiki/Human_skeleton   (817 words)

  
 Axial skeleton
The axial skeleton forms the central axis of the body.
The facial skeleton consists of fourteen irregular bones, which are all (with the exception of the lower jawbone) firmly attached to the cranium by means of sutures.
The 12 thoracic vertebrae, the 12 pair of ribs and the sternum forms the thorax which protects the delicate and vital organs of the thorax, viz.
www.botany.uwc.ac.za /sci_ed/grade10/manphys/axial.htm   (1570 words)

  
 Lab 5
The axial skeleton is comprised of the vertebral column and ribs, whereas the appendicular skeleton consists of the appendages used for locomotion.
Except for the cetaceans (whales) and sirenians (manatees and sea cows), mammals are tetrapods and have four appendicular limbs, although the limbs of the marine carnivores (seals, sea lions, and walruses), cetaceans (whales), and sirenians (manatees and sea cows) are highly modified.
The axial skeleton is the primary source of support for the body and transfers this weight to the appendages.
www.wtamu.edu /~rmatlack/Mammalogy/lab5.htm   (1057 words)

  
 axial skeleton
There are a total of 7 cervical vertebrae in a bison skeleton.
the articular surfaces of the centra are the flattest of the bison's skeleton (they have no costal pits).
The wings of the sacrum contact the ilium of the os coxae and provide the point of union between the axial skeleton and the rear limb.
lamar.colostate.edu /~lctodd/axial.htm   (560 words)

  
 Axial Skeleton   (Site not responding. Last check: 2007-10-14)
Outline the common fractures, diseases and abnormalities of the axial skeleton.
Recognise and describe the anatomical structures and common abnormalities demonstrated by the fundamental radiographic examinations of the axial skeleton.
Primary radiographic procedures of the bones and joints of the axial skeleton.
www.tech.port.ac.uk /tud/dbp/UnivPort/level_1/2RAD113.htm   (455 words)

  
 PATTS - Skeletal System
There are three types of cartilage: 1) fibrocartilage (found in intervertebral discs), 2) elastic cartilage (found in the external ear and epiglottis), and 3) hyaline cartilage.
Hyaline (or articular) cartilage is the most important cartilage: It serves as the "original" skeleton in the embryo from which bones develop; it spurs growth of long bones; and it lines and protects joints.
The appendicular skeleton, consisting of 126 bones, includes two limb girdles (the shoulders and pelvis) and their attached limb bones.
webschoolsolutions.com /patts/systems/skeleton.htm   (1324 words)

  
 LAB 4 The Axial Skeleton, Ex
Laboratory 4 is a general introduction to bones and the skeleton (Ex.
The skeleton is divided into the axial skeleton and the appendicular skeleton.
  The appendicular skeleton consists of bones of the shoulders, hips, and limbs.
www.rci.rutgers.edu /~uzwiak/AnatPhys/APF141Lab4notes.html   (402 words)

  
 Functional biology of the Homo erectus axial skeleton from Dmanisi, Georgia
A new partial skeleton of Homo erectus attributed to the D2700 cranium was recently discovered at the site of Dmanisi, Georgia.
The vertebrae represent the oldest known vertebral series for this taxon, and are the oldest known outside of Africa.
The fossils were compared 2257 individual vertebrae from modern humans, chimpanzees, gorillas and fossil hominids to assess the morphological and functional structure of the Dmanisi vertebrae and associated spinal cord.
repository.upenn.edu /dissertations/AAI3165730   (398 words)

  
 cat skeleton   (Site not responding. Last check: 2007-10-14)
Compare the skeleton of the cat to that of the dog and the human.
Axial Skeleton (Cranial bones, jaw, vertebral column, ribs and sternum)
Compare the cat's skeleton to that of a human.
www.cbsd.org /cb-east/departments/science/kenmoyer/catskeleton.htm   (486 words)

  
 UNSW Embryology- Musculoskeletal System: Axial Skeleton
Centre of the image shows initial vertebra "bony collar" (in red) forming, either side of which is the original cartilage (blue) "template", outside of that again are the 2 intervertebral discs (not shown).
Mesoderm beside the notochord (axial mesoderm) thickens, forming the paraxial mesoderm as a pair of strips along the rostro-caudal axis.
The axial skeleton consists develops mainly from the somitic mesoderm.
embryology.med.unsw.edu.au /Notes/skmus8.htm   (1979 words)

  
 Axial Skeleton
The primary function of the cranial skeleton was to protect and support the brain and associated sensory organs.
In contrast, the postcranial skeleton is used less for protection but more for support of the body and for locomotion
Chondrocranium - anterior part of the axial skeleton that encases the special sense organs and contributes to the skeletal elements encasing the brain
www.shsu.edu /~bio_mlt/Chapter8.html   (1427 words)

  
 Skeletal System
The skeleton supports and/or protects the softer body parts of a fish, bird, or human.
The skeleton maintains a body shape, protects vital organs, and provides a system of muscle levers that allow body movement.
A human skeleton generally forms about 206 separate bones out of cartilage as it develops to maturity.
www.42explore.com /skeleton.htm   (855 words)

  
 Axial Skeleton: Ossification
The irregular bones of the axial skeleton have a very different structure than the long bones, with only a thin layer of
As perichondral ossification precedes endochondral ossification in evolution (showing up in some of the earliest jawless vertebrates) and has not been lost in the formation of the appendicular skeleton, it should theoretically play some role in the ossification of the axial skeleton as well.
From an evolutionary standpoint, the axial and appendicular skeletons exist for very different purposes and were not simultaneous in their derivation.
www.brown.edu /Courses/BI0032/bone/axial3.htm   (296 words)

  
 Lab 1: Axial & Appendicular Skeleton
1) Axial skeleton (skull, vertebral column, ribs, sternum), and the
2) Appendicular skeleton (bones of the upper and lower limbs).
With reference to the bones of the vertebral column provided in your bone boxes and on the articulated skeletons in the lab, study the column using the following protocol, a textbook, and your Atlas (i.e., see Netter, Plates 142-149, Grant's Atlas, Pgs.
www.med.howard.edu /anatomy/gas/wk1/Lab1.htm   (320 words)

  
 The Origin of the Axial Skeleton
This is not a case of one part (a radial or rib) becoming two distinct parts (ray and rib); the primitive radial consists of many segments.
The evolutionary trend toward loss of axial segments is well known; in our own species, the tail has been lost.
But there are many popular phylogenetic claims which contradict the pattern of reduction in number of segments.
home.inreach.com /cliff_lundberg/axial.html   (619 words)

  
 Science Project/a&j   (Site not responding. Last check: 2007-10-14)
The appendicular skeleton is one of two components of the vertebrate skeleton : axial and appendicular
The upper appendicular skeleton consists of the pectoral girdle and the forelimbs (arms)
It includes nice images of the upper limbs, lower limbs, pectoral and pelvic girdle which are part of the appendicular skeleton.
www.heumann.org /body.of.knowledge/a2/appendicular.skeleton.html   (440 words)

  
 Axial skeleton lab   (Site not responding. Last check: 2007-10-14)
You should be able to identify the following anatomical features on the bony skeleton and/ or the cadaver or cadaver model.
When observing features on the bony skeleton, be sure to consider the structures attaching to them or related to them.
Use your atlas and your text to identify structures and understand their relationships.
csm.jmu.edu /biology/wunderre/bio325/lab_axial_skeleton.htm   (64 words)

  
 THE SKELETON SYSTEM   (Site not responding. Last check: 2007-10-14)
Because the human skeleton is an internal structure, biologists refer to it as an ENDOSKELETON.
The variation in size and shape among the bones that make up the skeleton reflects their different roles in the body.
Distinguish between the axial skeleton and the appendicular skeleton.
www.sirinet.net /~jgjohnso/skeleton.html   (2374 words)

  
 Axial skeleton Summary
The axial skeleton consists of the bones in the head and trunk of a vertebrate body.
1: the part of the skeleton that includes the skull and spinal column and sternum and ribs
The various functions of bones in the axial skeleton.
www.bookrags.com /Axial_skeleton   (114 words)

  
 : Animal_Systems/Axial_Skeletons
Axial Skeleton System Review - Good photos of bones of the skull, with nice enlargements for more detail, although unlabeled.
Bones of the Body - A clickable list of all of the bones of the human body, then a picture labels the parts, and displays answers when clicked upon.
Postcranial Skeleton - Click on the portion of the body you wish to examine, then click again on each bone for great detail of the human skeleton.
www.mhhe.com /links/pages/Animal_Systems/Axial_Skeletons   (204 words)

  
 NASA - Exploration Systems - Subregional Assessment of Bone Loss in the Axial Skeleton in Long-term Space Flight ...   (Site not responding. Last check: 2007-10-14)
Bone density scans were taken preflight, soon after landing, and again one-year postflight to understand the effects of microgravity on bone loss due to long-duration space flight.
Bone loss, which can increase the risk of fracture by weakening the skeleton, is an established medical risk in long-duration spaceflight.
This study provided the first information on space flight related compartmental bone loss (magnitude and distribution) in the axial skeleton and on the extent to which lost bone is recovered in the year following return.
exploration.nasa.gov /programs/station/Subregional-Bone.html   (1303 words)

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