Development of Bone. The resulting structural damage is varied, governed by the complex macroscopic and microscopic composition of these tissues. Flexibility. Observe the change in morphology of the chondrocytes from the surface layer (very flattened) to the deeper layers. The ribs attach to the spine and there are no limbs or limb girdles.

This articular cartilage (AC) has no perichondrium. A temporary synchondrosis is the epiphyseal plate (growth plate) of a growing long bone.

As the name suggests, it is located within the bone, either centrally (80% of cases) or eccentric (20% of cases). (a) Mesenchymal cells differentiate into chondrocytes that produce a cartilage model of the future bony skeleton.

The epiphyseal plate is the region of .

The limbs and their girdles constitute the appendicular skeleton.

Skeletal Cartilages The human skeleton is initially made up of cartilages and fibrous membranes, but bone soon replaces most of these early supports. The disease is present from birth and affects a person throughout life. This cartilage is later replaced by bone. 5. bone replaces cartilage, except the articular cartilage and epiphyseal plate 6. epiphyseal plates ossify and form epiphyseal lines.

Haversian and Volkman's. There are, however, several other differences between these two classes of fish.

Bone is a specialized and mineralized connective tissue, It makes up, with cartilage, the skeletal system, Bone formation in a developing embryo occurs through one of two processes: either endochondral or intramembranous osteogenesis (ossification).

Dermal bone forms

The manubrium and body of the sternum are converted into bone first, with the xiphoid process remaining as cartilage until late in life. It is responsible for the attachment of the neck muscles.

Furthermore, the biomechanical properties of both cartilage and bone are not uniform, influenced by .

In this article, we shall look at the osteology of the sternum - its constituent parts, articulations, and . 1. cervix. They are typically small tumours (<2cm), located usually around the metaphysis of long bones (e.g. The cartilage cap merges into the underlying spongiosa.

Examine the microscope demonstration of dry .

Note the absence of perichondrium on what will become the articular cartilage surface.

In the joints of the body, cartilage covers the ends of the bones and acts as a shock absorber to prevent bones from rubbing against each other. Look at the eMicroscope section on the left to examine an epiphyseal growth plate.


Bone Cancer Treatment - This article clarify about Bone Cancer is a difficult and savage malady. As previously mentioned, bony fish have a bone skeleton whereas cartilaginous fish have a skeleton made of cartilage.

The hyoid bone is a small horseshoe-shaped bone located in the front of your neck.

Communications between cartilage and underlying bone could play a vital role in the progression of osteoarthritis (OA).

Cartilage has more collagen than bones and hence they are less dense and rigid than bones.


Bone or cartilage, or both, are frequently injured related to either a single episode of trauma or repetitive overuse. Chapter 7: The skeletal system Intro:-Bones contain tissue, cartilage, dense connective tissue, blood, and nervous tissue-They have multiple functions: a.

Long bones are formed by intracartilaginous development in which the future bone begins as cartilage. Histogenesis of Bone, Repair of Bone fractures, Steps of Bone Growth.

Either freshwater or marine.

Diseases of the Skeletal System Osteogenesis imperfecta (OI) is a genetic disease in which bones do not form properly and therefore are fragile and break easily. Definition. Here the bone continues to grow, until maturity (around 18 years old). Bony fish also referred to as Osteichythyes is a diverse taxonomic group of fish that have skeletons primarily composed of bone tissue. They are multicellular aquatic organisms.There are more than 32,000 species in all aquatic environments belong to this group. Find diagnosis, treatment, and prevention information on more than 20 different muscle and bone diseases and conditions affecting the musculoskeletal system. During fetal (beyond the eighth week) development, these cartilages are then replaced by bone, by either endochondral or intramembranous ossification.

The human skull is a fascinating structure when viewed from a phylogenetic perspective.

either of cartilage or bone, is given. The cartilage models of the ribs become attached to the lateral sides of the developing sternum.

Possess an anterior tip mouth opening. .

Bone is porous and cannot be bent.

Find the cartilage at the end of the bone at the bottom of the slide.

Bone/ cartilage tumors/ MHE (multiple hereditary exostoses) By goldfarbc May 19, 2014 December 29, 2021. .

Cartilage is much softer, more pliable component that is mostly found in between the joints of the bones, the rib cage, the ear, the nose, the bronchial tubes and the intervertebral discs.

It arises in bones preformed by endochondral ossification and the most common site of involvement is the metaphyseal region of the long .

. Osteoid osteomas arise from osteoblasts, often around the second decade of life (10-20yrs), and are more common in males.

It is also called brittle bone disease. Osteoblasts are responsible for production of bone matrix; they eventually produce a bony collar around the diaphysis called the periosteal collar.The connective tissue superficial to the periosteal collar is subsequently referred to as the . Osteochondromas are a relatively common imaging finding, accounting for 10-15% of all bone tumors and approximately 35% of all benign bone tumors. The manubrium and body of the sternum are converted into bone first, with the xiphoid process remaining as cartilage until late in life.

At the peak of the flexure, the end of the ulna should be evident.

Another may describe a tissue as intermediate between bone and cartilage, but may either fail to name it or may call it something other than chondroid bone.

The protrusion of the bone is one of the markers used in martial arts as a detrimental target for generating pain in an opponent. Either freshwater or marine.

Of 24 primary bone tumors, LIU et al. Either of two slender bones that extend from the upper part of the sternum (breastbone) to the .

Subchondral bone serves as a shock absorber in weight-bearing joints like the knees.

Furthermore, the biomechanical properties of both cartil

It is also found between the vertebrae and at the ends of bones like the femur.

A synchondrosis is a cartilaginous joint where the bones are joined by hyaline cartilage, or where a bone is united to hyaline cartilage. called trabeculae.

Finally, we highlight the . The sternum (or breastbone) is a flat bone located at the anterior aspect of the thorax.It lies in the midline of the chest and has a 'T' shape. A typical benign chondrocyte has a single small nucleus. The lower, narrow portion of the uterus where it joins with the top end of the vagina. bone, hard tissue that forms the skeleton of the body in vertebrate animals.

The resulting bone is a thick walled cylinder, that encloses a central bone marrow cavity.

Bone Development & Growth.

When a bone fracture occurs, the stem cells that repair the injury either form new bone or new cartilage.

This cartilage is .

This becomes the canaliculi of osteons.

At the peak of the flexure, the end of the ulna should be evident. Bony Fish.

Cartilage is non-porous and can be bent.

The bone has many blood vessels to supply it with nutrients and oxygen, and to take away wastes. A new study in the journal Nature has identified how this decision happens: fatty acids in the blood signal to stem cells that they have to develop into bone-forming cells. Cartilaginous Fish. bone cartilage. A synchondrosis may be temporary or permanent.

Bony Fish.

Bone during life is permeated by vessels, and is enclosed, except where it is coated with articular cartilage, in a fibrous membrane, the periosteum, by means of which many of these vessels reach the hard tissue. (Even the distal phalanx of the fifth toe is a long bone.)

0. .

bone forming) properties; and thus become osteoblasts.

0. Compact Bone.

Technically, the most obvious disparity between bony vs cartilaginous fish comes from the fact that the skeleton of bony fish is made of bones alone, while that of cartilaginous fish is made of cartilage. The modern human skull is derived from both kinds of bone.

Overview: The main goal of this lab is to learn how to identify key cells and structural features of cartilaginous tissues, mature bone, and developing bone.

In any case, this can be restored in beginning times effectively. A synchondrosis may be temporary or permanent. The flat bones, such as the skull and . The axial skeleton consists of the braincase (cranium) and the backbone and ribs, and it serves primarily to protect the central nervous system.

So this article gives you data identified with bone malignancy, Sigs or side effects of bone disease, what might be the reasons for bone malignant growth, How frequently does it happen, what treatment choice do patients have, what . Mesenchymal cells differentiate to chondroblasts formation of a cartilaginous model.

Hyaline cartilage may be observed in several slides from your reference set, not just the one labelled "hyaline cartilage." Also examine the trachea and the cartilage precursors of bone in the slides of developing bone and skull.

In either case, the balanced forearm can be thrown off kilter and problems can develop.

Splanchnocranium comes from neural crest cells and is either cartilage or replacement bone.

No, it has a skeleton of bone. All skeletal structures belong to either the appendicular skeleton (girdles and limbs) or to the axial skeleton (skull, vertebral column, and .

What group of vertebrates has a cartilaginous skeleton? Find the cartilage at the end of the bone at the bottom of the slide.

They are frequently asymptomatic and have very low malignant potential if sporadic and solitary.


General connective tissue is dispersed throughout the body as mesenchyme, adipose (fat) and areolar tissue. The little talked about hyoid bone is a unique part of the human skeleton for a number of reasons.


Primary skeletal tumors are frequent in dogs and rarer in cats.

The musculoskeletal system consists of the body's bones, muscles, tendons, ligaments, joints, & cartilage.

Subchondral bone is the layer of bone just below the cartilage in a joint.

The student should appreciate the differences in structure between cartilage and bone, and how the specific cells and matrices work together to perform the critical functions of these tissues. (dense) no spaces or hollows in the bone matrix visible to the eye.

. dogs are more frequent than benign tumors, while in cats the two forms seem to be In other species, bone tumors are sporadic. The inorganic, or mineral, content of bone is mainly calcium, phosphate and carbonate minerals. Bone is indirectly formed from mesenchymal cells via the cartilaginous model in the diaphysis of bones.

Osteons are units or principal structures of compact bone.

Enchondroma is a common benign hyaline cartilaginous neoplasm that develops within the medullary cavity of bone.