SkeleTech – Bone Histology Slide Set Page 4 of 7 2001 of bone structure in humans - the inner spongy bone and the outer compact bone. Spongy bone contains large marrow spaces defined by shelves and spicules of bone. connective tissue stains substance stains component stains possible uses collagen masson trichrome collagen –blue /green muscle –red reticulin –blue Compact Bone and Spongy Bone Compact Bone does not have any spaces or hollows in the bone matrix that are visible to the eye. Berlin: Springer. Highlighted with polarized light or reticulin stain. Skeletal System 33-34 2. Openings in compact bone allow blood to enter bone and deposit its nutrients. Enostosis or bone island is a focus of compact bone located in cancellous bone. The present investigation on the inter- Osteocytes can be seen embedded in concentric rings in the bone matrix. 4. Bones protect the various organs of the body, produce red and white blood cells, store minerals, provide structure and support for the body, and enable mobility.Bones come in a variety of shapes and sizes and have a complex internal and external structure. Areolar 100x . Outer surface is sharply demarcated and lined by respiratory epithelium in sinus tumors. Compact Bone Structure. The basic units of compact bone are called osteons or Haversian systems. These are cylinder-shaped structures that have a mineral matrix and are home to osteocytes (mature bone cells) that are trapped in the matrix. The 150 μg BMP-2 loaded hydrogel produced significantly higher amounts of bone. Knowledge of cementum histology has been accumulated with the advancement of investigating techniques and equipment. • Gives bone STrength • Compared to Hydroxyapatite that gives bone Hardness Develop into osteocytes o Osetocytes: Mature bone cells Function to maintain bone o Osteoclasts Resorption of bone Releases calcium stored in bones back into blood • Two types of bone: o Compact PreLab 6 Due next week in lab - Scientific America Article Select one article to read and complete article summary Cell Defenses and the Sunshine Vitamin (Summary in Case Study 19-20) Skin Deep (Summary in Case Study 21-22) Sex and the Secret Nerve (Instructor website) The Naked Truth (Instructor website) Compact Bone. Compact bone accounts for 80% of the bones in the human body. Bone islands demonstrate uniformly low signal … It can be found under the periosteum and in the diaphyses of long bones, where it provides support and protection. special stains in histology ... bone spongy compact blood cartilage elastic fibrocartilage hyaline. Bone marrow functions in hematopoiesis, and, in a healthy adult, produces more than 500 billion blood cells a day. Both types are found in most bones. Compact bone forms a shell around cancellous bone and is the primary component of the long bones of the arm and leg and other bones, where its greater strength and rigidity are needed. Mature compact bone is lamellar, or layered, in structure. It is the nature of the matrix that defines the properties of these connective tissues. Today 's Points. Medical School Histology: Images of compact bone Please subscribe . Trabecular bone, also known as cancellous bone or spongy bone, mainly serves a metabolic function. ISBN 978-3-642-02399-6. Identify OSTEONS (HAVERSIAN SYSTEMS) and LACUNAE, CANALICULI,and HAVERSIAN CANALS within these osteons. histology of bone Gross structure • The diaphysis is the shaft and notably comprises the marrow cavity. The mineral is calcium phosphate. A thin layer of compact bone also covers the epiphyses of long bones. Two recent publications on pterosaur osteohistology are an overview of pterosaur bone microstructure (Steel, • • Count at least 200-300 nucleated cells • Between 40-60 cells can be counted in one field with oil immersion. There are two types of mature bone: . Osteocytes can be seen in layers in adult spongy bone. Also note the VOLKMANN'S CANALS and INTERSTITIAL LAMELLAE. Click here for answers and detailed explanations. Recorded at Glen Oaks Community College, Centreville, Michigan by Dr Ren Allen Hartung. Trabecular bone, also known as cancellous bone or spongy bone, mainly serves a metabolic function. As seen in the image below, compact bone forms the cortex, or hard outer shell of most bones in the body. Composed primarily of dense, compact bone and broad trabeculae of mature bone within paucicellular fibrous stroma. between compact bone • Short and Irregular Bone – Compact bone that surrounds cancellous bone center; similar to structure of epiphyses of long bones – No diaphyses and not elongated • Some flat and irregular bones of skull have sinuses lined by mucous membranes. Undecalcified, 5-µm toluidine blue stained. The less densely arranged trabeculae also contribute to making the bones lighter (as opposed to the heavier compact bone). The differences between compact and spongy bone are best explored via their histology. In lamellar bone, the collagen fibres have become re-modelled to become more parallel - in layers.. Your Skills & Rank. • The metaphyses comprises spongy bone. Outside all of bone, is a connective tissue sheath called the periosteum (see below photograph). BONE A. Gross Anatomy of Bone. Perforating canals. The thrust plate was made of titanium with a rough, shot-blasted surface (see Chap. Identify the tissue type and a Blood 40x . connective tissue stains substance stains component stains possible uses collagen masson trichrome collagen –blue /green muscle –red reticulin –blue The Tour de France is a bicycle race which covers between 3500 to 4000 kilometers. Experiments on the mechanical behavior of bone tissue determine the ability of the tissue to meet to those demands. coil in one direction, next to another that coils in an opposite direction to make the bone stronger and resist stress in many different directions. As a result, the cortex was made cancellous, if previously compact, or still more spongy, if already cancellous. Histology is the study of tissues. 1A. compact bone histology This shows the architecture of compact bone which is designed to nourish and regulate osteocytes and bone matrix. histology notes.pdf - I General Histological Concepts Histology(review definition from LEC study of tissues A Major components of a tissue 1. Be able to identify the component parts of adult bone and know their functions (e.g. II. This is the area of bone to which ligaments and tendons attach. • It becomes difficult with 100 or more cells, as we tend to skip or to count the same cells twice. Compact Bone Using colored pens/pencils, draw the histology Image B from the “Compact Bone” chart in the space below. Compact bone is formed from a number of osteons, which are circular units of bone material and blood vessels. Compact bone consists of outer and inner sheets of lamellar bone (not seen here) and Haversian systems, shown here, that run parallel to the long axis of bones. The strength, shape and stability of the human body are dependent on the musculoskeletal system. Below is an index of slides from the University of Michigan Histology collection compiled by Dr. Kent Christensen, Ph.D., J. Matthew Velkey, Ph.D., Lloyd M. Stoolman, M.D., Laura Hessler, and Diedra Mosley-Brower. Identify the tissue type and a Areolar 400x . The aspirate can be expelled drop by drop onto a glass slide, smeared, allowed to air dry, and stained.
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