190lec3 Bone2

190lec3 Bone2 - HKIN 1190: Anatomy & Physiology I...

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Physiology Lecture 2: Bone Structure and Physiology II HKIN 1190: Anatomy & Physiology I
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Learning Objectives: 1. To understand the process of bone formation in 4 main situations in the body: a) Initial formation of bones in the fetus b) Growth of bones from birth until adult sizes reached c) Remodeling of bone d) Fracture repair Within this, to understand: the difference between endochondral and intramembranous ossification the difference between appositional and interstitial growth the different types of fractures 1. To understand common bone disorders. 2. To understand the effects of aging on bone tissue.
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Tissue types in the body – CMEN C onnective Tissue Blood Bone Cartilage Connective Tissue Proper M uscle Smooth Skeletal Cardiac E pithelial Squamous Cuboidal Columnar Pseudostratified Transitional N ervous
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Today, we’re still focusing on: C onnective Tissue Blood Bone Cartilage Connective Tissue Proper M uscle Smooth Skeletal Cardiac E pithelial Squamous Cuboidal Columnar Pseudostratified Transitional N ervous …and the skeletal system .
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To understand the process of bone formation in the fetus. Within this, to understand the difference between endochondral and intramembranous ossification. Learning Objective 1a
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Bone Growth Slide 1 of 7 The term for bone formation is ossification (or osteogenesis). Bone formation occurs in 4 main situations in the body: a) Initial formation of bones in the fetus b) Growth of bones from birth until adult sizes reached c) Remodeling of bone (occurs throughout life) d) Fracture repair Ossification: Bone Formation
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Bone Growth Slide 1 of 7 The term for bone formation is ossification (or osteogenesis). Bone formation occurs in 4 main situations in the body: a) Initial formation of bones in the fetus a) Growth of bones from birth until adult sizes reached b) Remodeling of bone (occurs throughout life) c) Fracture repair Ossification: Bone Formation
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Bone Growth Slide 1 of 7 Ossification: Bone Formation a) Initial formation of bones in the fetus: May occur in 2 ways: 1. Intramembranous Ossification bone develops between sheets of fibrous connective tissue bone does not develop from cartilage , as in endochondral ossification Bones in fetus that form this way: flat bones of skull and mandible (plus, after birth, the “ soft spots ” on the skull will develop this way) 2. Endochondral Ossification Bone develops by replacing portions of cartilage Most bones of fetus form this way (exc skull bones and mandible); best explained in long bones
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Bone Growth Slide 1 of 7 Ossification: Bone Formation a) Initial formation of bones in the fetus: May occur in 2 ways: 1. Intramembranous Ossification bone develops between sheets of fibrous connective tissue bone does not develop from cartilage , as in endochondral ossification Bones in fetus that form this way: flat bones of skull and mandible (plus, after birth, the “ soft spots ” on the skull will develop this way)
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190lec3 Bone2 - HKIN 1190: Anatomy & Physiology I...

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