A&P chpt. 7
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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What are the six basic functions of bone? | show 🗑
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show | Bone provides a framework for the body by supporting soft tissues and providing points of attachment or most of the skeletal muscles.
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show | -- Bones protect many internal organs from injury very well, such as the brain and spinal cord. In addition, the heart, lungs, and reproductive organs are given some degree of protection.
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How does a bone Move? | show 🗑
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show | -- Bone tissue stores a number of minerals, particularly calcium and phosphorus. Under control of the endocrine system, bone releases the minerals into the blood or stores the minerals in bone matrix to maintain critical mineral balances.
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How does a bone produce Blood cells? | show 🗑
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Diaphysis | show 🗑
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Epiphysis | show 🗑
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Metaphysis | show 🗑
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show | In a growing bone, the epiphyseal plate is formed of hyaline cartilage divided into four zones of cells. Under the influence of growth hormone, the plate continues to grow, giving length to the bone. When bone growth exceeds cartilage growth, beginning
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Articular cartilage | show 🗑
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Medullary cavity | show 🗑
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Periosteum | show 🗑
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Fibrous periosteum | show 🗑
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Osteogenic periosteum | show 🗑
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Periosteal functions | show 🗑
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Endosteum | show 🗑
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Compare spongy bone with compact bone. | show 🗑
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Osteoprogenitor cells | show 🗑
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show | Osteoblasts, once differentiated, lose their mitotic ability, and begin producing new bone matrix in a process known as osteogenesis.
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show | Osteocytes are mature bone cells completely embedded in bone matrix, are incapable of mitosis, and probably do not secrete new matrix. Their role in bone homeostasis is poorly understood.
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show | Osteoclasts reside scattered along the endosteal surfaces. They function in a process known as bone resorption, the destruction of bone matrix. This process is required for normal bone function.
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How does the matrix of bone differ from other connective tissue? | show 🗑
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show | 1. Tricalcium phosphate (hydroxyapatite--50% of total matrix), 2. Ground substance (25% of total matrix is water), 3. Collagen fibers (25% of total matrix)
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Briefly describe the process of ossification (mineralization or calcification). | show 🗑
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show | Collagen fibers provide pliability and tensile strength to resist being stretched or torn apart. The mineral salts are crystallized onto the collagen fibers, giving bone its hardness.
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show | Because the acetic acid in the vinegar dissolved the mineral salts from the bone, leaving only the collagen framework.
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Is a bone a solid mass? | show 🗑
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Volkmann’s canal | show 🗑
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show | An Haversian (central) canal is a circular channel running longitudinally in the center of an osteon of mature compact bone. It contains blood and lymphatic vessels and nerves.
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Concentric lamellae | show 🗑
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show | A lacunae (“little lake”) is a small hollow space within bone matrix wherein resides an osteocyte. They are located between concentric lamellae.
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show | A canaliculus is a small channel or canal connecting two lacunae in compact bone. Each canaliculus contains a cellular process of an osteocyte.
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Osteon | show 🗑
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show | Interstitial lamellae are fragments of older compact bone found between newer osteons. They have been partially destroyed during bone replacement.
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What is the process of bone remodeling? | show 🗑
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show | 1. Changes the way bone matrix resists stress, 2. Removes worn or injured bone, 3. Provides a reservoir for body calcium
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show | 1) support 2) protection 3) movement 4) mineral storage * calcium & phosphorus 5)blood cell formation 6)detoxification of heavy metals
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show | 1) compact bone dense outer layer2) spongy bone - honeycomb of trabecualae filled w/ yellow or red bone marrow
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show | Diaphysis - shaft - of compact bone surround the meduallary cavity filled w/ yellow or red marrowEpiphysis- head, exterior is compact bone internal is spongy-covered w/ articular (hyaline cartilage)- while growing it becomes the EPIPHYSEAL PLATE- EPIPHYSE
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Diaphysis | show 🗑
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show | Head of long bone, exterior is compact bone internal is spongy-covered w/ articular (hyaline cartilage)- while growing it becomes the EPIPHYSEAL PLATE- EPIPHYSEAL LINE
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BONE MEMBRANE | show 🗑
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ENDOSTERM | show 🗑
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show | OUTSIDE OF BONE (woven bone)*double layer protective membrane white*outer fibrous layer - dense regular connective tissue *vascularized mesenchyme condenses on the external face of the woven bone to become...
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show | dissolve bone
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OSTEOBLAST | show 🗑
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show | Embryonic cell centrally located clusters become Osteoblasts - forming an ossification center
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OSTEOCYTE | show 🗑
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show | process of bone formation (boney skeleton) then bone grown and repair
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show | Osteon or Haversian systemlamella - lemele haversian canal or central canalvolkman's canals
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show | the structural unit of compact bone (one group of circles section of bone cross sectional view)
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OSTEOID | show 🗑
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show | weight bearing section of bone - column like a matrix tubes composed mainly of collagen(One ring)
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show | canal of bone length wise that contains blood vessels and nerves(eye of the storm)
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show | Channels in bone lying at right angles to the central cannal (Haversian canal). Connecting blood and nerves supply of the perlosteum to the Haversian canal (central canal). Also called the perforating canal.
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LACUMAE | show 🗑
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show | hair like canals that connect lacunae to each other and central canal (Haversian canal).
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STRUCTURE OF SHORT, IRREGULAR & FLAT BONES | show 🗑
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show | Infants- found in the medullary cavity and all areas of spongy boneAdults- found in the spongy (dipole) of flat bones and the head of the femur and humours
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show | Hydroxyatatile Ca+ (Po4) 6 (OH) 2 85%calcium carbonate 10%
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show | ostergeneisis and ossifacaiton - (hayline will turn into bone and then break) the process brake, clean up , bind
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4 STAGES OF INTRAMEMBRANOUS OSSIFICATION | show 🗑
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show | * begins the 2nd month of development* uses hayline cartilage "bones" as a model of bone* requires breakdown of haylaine cartilage prior to ossification
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5 STAGES OF ENDOCHODRAL OSSIFICATION | show 🗑
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show 🗑
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Created by:
SKinnan