Georgia Performance Georgia Performance Standards Standards SAP2. Students will analyze the SAP2. Students will analyze the interdependence of the integumentary, interdependence of the integumentary, skeletal, and skeletal, and muscular systems as these relate to muscular systems as these relate to the protection, support and the protection, support and movement of the human body. movement of the human body. SAP2b. Explain how the skeletal SAP2b. Explain how the skeletal structures provide support and structures provide support and protection for tissues, and function protection for tissues, and function together with the muscular system to together with the muscular system to make movements possible. make movements possible. 1
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Georgia Performance Standards SAP2. Students will analyze the interdependence of the integumentary, skeletal, and muscular systems as these relate to.
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SAP2. Students will analyze the SAP2. Students will analyze the interdependence of the integumentary, interdependence of the integumentary, skeletal, and skeletal, and
muscular systems as these relate tomuscular systems as these relate to
the protection, support andthe protection, support and
movement of the human body.movement of the human body. SAP2b. Explain how the skeletal structures SAP2b. Explain how the skeletal structures
provide support and protection for tissues, provide support and protection for tissues, and function together with the muscular and function together with the muscular system to make movements possible. system to make movements possible.
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Bone Surface MarkingsBone Surface Markings Surface FeaturesSurface Features
– rough area, groove, openings, processrough area, groove, openings, process Specific FunctionsSpecific Functions
– passageway for blood vessels and nervespassageway for blood vessels and nerves– joint formationjoint formation– muscle attachment & contractionmuscle attachment & contraction
–Nutrient and oxygen Nutrient and oxygen supply line to compact supply line to compact bonebone
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OsteoprogenitorOsteoprogenitor ( (Stem CellsStem Cells = Unspecialized) = Unspecialized)– Mesenchyme cells from which all tissues arise from Mesenchyme cells from which all tissues arise from
Mesoderm Mesoderm OsteoblastOsteoblast
– Cells that form bone by secreting Cells that form bone by secreting collagen & matrixcollagen & matrix OsteocyteOsteocyte
– Destroys BoneDestroys Bone for growth, development, and repair of bone for growth, development, and repair of bone
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OSTEOCYTESOSTEOCYTES::
During bone During bone development the development the osteoblast may osteoblast may produce too much produce too much matrixmatrix & become & become cementedcemented in in
Once trapped w/i the Once trapped w/i the chamber (chamber (lacunaelacunae) ) surrounded by the surrounded by the matrix it is called/turns matrix it is called/turns into...into...OsteocytesOsteocytes
OSTEOBLASTSOSTEOBLASTS::
Found on Found on surfacesurface of bone of bone tissuetissue
Produce Produce matrixmatrix – Mineral saltsMineral salts
and and collagencollagen
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OSTEOCLAST:OSTEOCLAST: Bone cells that Bone cells that wanderwander
throughout bone tissuethroughout bone tissue Secrete substance that Secrete substance that
dissolvesdissolves the mineral the mineral salt crystals of the salt crystals of the matrixmatrix
May arise from a May arise from a monocyte (wbc) under monocyte (wbc) under influence of certain influence of certain hormoneshormones
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LacunaeLacunae– Store osteocytesStore osteocytes
Haversian Canal (Osteon)Haversian Canal (Osteon)– Central canal that Central canal that carries blood carries blood
vessels and nervesvessels and nerves to bones to bones Volkman’s CanalsVolkman’s Canals
– ConnectsConnects Haversian Canals Haversian Canals– Transport from nutrient supply Transport from nutrient supply
to internal compact boneto internal compact bone– CanaliculiCanaliculi
Nutrient ForamenNutrient Foramen– Nutrient supply from body to Nutrient supply from body to
internal boneinternal bone– Found in Found in Medullary CavityMedullary Cavity
Compact BoneOsteocytes
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Spongy BoneSpongy Bone No True OsteonsNo True Osteons Lamellae arranged in lattice Lamellae arranged in lattice
known as known as trabeculaetrabeculae Filled with Filled with Red Bone MarrowRed Bone Marrow