Presentation is loading. Please wait.

Presentation is loading. Please wait.

Slide1 Chapter 7 Skeletal Tissues. Slide2 Introduction  Description of bone  Active living Tissue  Organ  Functions of bone  Muscle attachment 

Similar presentations


Presentation on theme: "Slide1 Chapter 7 Skeletal Tissues. Slide2 Introduction  Description of bone  Active living Tissue  Organ  Functions of bone  Muscle attachment "— Presentation transcript:

1 Slide1 Chapter 7 Skeletal Tissues

2 Slide2 Introduction  Description of bone  Active living Tissue  Organ  Functions of bone  Muscle attachment  Protection  Support  Blood cell production  Mineral storage  Description of bone  Active living Tissue  Organ  Functions of bone  Muscle attachment  Protection  Support  Blood cell production  Mineral storage

3 Slide3 Types of Bones - varied structure to meet varied needs  Four Types  Long bones  Short bones  Flat bones  Irregular bones  Four Types  Long bones  Short bones  Flat bones  Irregular bones

4 Slide4 Types of Bone Tissue  Compact bone  Cancellous bone (Spongy Bone)  Compact bone  Cancellous bone (Spongy Bone)

5 Slide5  Diaphysis  Epiphyses  Articular Cartilage  Periosteum  Medullary cavity  Endosteum  Diaphysis  Epiphyses  Articular Cartilage  Periosteum  Medullary cavity  Endosteum Parts of a long bone

6 Slide6 Short, flat and irregular bones  Inner portion - Cancellous bone  Outer portion - compact bone  Some with bone marrow  Inner portion - Cancellous bone  Outer portion - compact bone  Some with bone marrow

7 Slide7 Bone Tissue Characteristics  Connective tissue  Great Tensile strength  Composition of bone matrix  Inorganic salts  Crystals of calcium and phosphate  Magnesium and sodium  ground substance  Connective tissue  Great Tensile strength  Composition of bone matrix  Inorganic salts  Crystals of calcium and phosphate  Magnesium and sodium  ground substance

8 Slide8 Dancing skeleton Puppet

9 Slide9 Bare bones

10 Slide10 Microscopic Structure of the Bone (Figure 7-3)  Compact bone  Osteons, or Haversian systems  Canals connecting cells and osteons- Canaliculi and Volkmann’s  Osteocytes  Purpose  Compact bone  Osteons, or Haversian systems  Canals connecting cells and osteons- Canaliculi and Volkmann’s  Osteocytes  Purpose

11 Slide11 The structure of bone

12 Slide12 Microscopic Structure of the Bone  Compact bone  Four types of structures make up each osteon:  Lamella  Lacunae  Canaliculi  Haversian canal (central canal)  Compact bone  Four types of structures make up each osteon:  Lamella  Lacunae  Canaliculi  Haversian canal (central canal)

13 Slide13 Microscopic Structure of the Bone  Cancellous bones (spongy)  No osteons  Trabeculae - support marrow  Nutrients and waste transported by diffusion  Cancellous bones (spongy)  No osteons  Trabeculae - support marrow  Nutrients and waste transported by diffusion

14 Slide14 Types of bone cells  Osteocytes  Osteoblasts  Osteoclasts  Osteocytes  Osteoblasts  Osteoclasts

15 Slide15 The life of an osteoclast

16 Slide16 Bone Marrow  Made of myeloid tissue  Red marrow - produce of blood cells  Located in medullary cavities of long bones and in the spaces of spongy bone  Two types of marrow  Red marrow  Yellow marrow  Made of myeloid tissue  Red marrow - produce of blood cells  Located in medullary cavities of long bones and in the spaces of spongy bone  Two types of marrow  Red marrow  Yellow marrow

17 Slide17 Regulation of Blood Calcium Levels  Cells that maintain constancy of blood calcium levels  Osteoblasts -take calcium from blood to build bone  Osteoclasts - remove calcium from bone  Homeostasis essential  Bone formation, remodeling, and repair  Blood clotting  nerve impulses  Muscle contraction  Cells that maintain constancy of blood calcium levels  Osteoblasts -take calcium from blood to build bone  Osteoclasts - remove calcium from bone  Homeostasis essential  Bone formation, remodeling, and repair  Blood clotting  nerve impulses  Muscle contraction

18 Slide18 Mechanisms of calcium homeostasis  Parathyroid hormone - primary calcium regulator  Stimulates osteoclasts to break down bone  Increase renal absorption  Stimulates vitamin D synthesis  Calcitonin - produced in thyroid  Stimulates bone deposit by osteoblasts  Inhibits osteoclasts  Parathyroid hormone - primary calcium regulator  Stimulates osteoclasts to break down bone  Increase renal absorption  Stimulates vitamin D synthesis  Calcitonin - produced in thyroid  Stimulates bone deposit by osteoblasts  Inhibits osteoclasts

19 Slide19 Development of Bone  Osteogenesis  Intramembranous ossification (flat bones)  Osteoblasts formed  Osteoblasts secrete matrix and collagen  Calcium is deposited  Trabeculae form  Endochondral ossification (long bones) - begin as cartilage  Diaphysis ossifies before epiphysis  Epiphyseal plate - growth plate  Layers  Resting cartilage  Zone of proliferation, Zone of hypertrophy  Zone of calcification  Osteogenesis  Intramembranous ossification (flat bones)  Osteoblasts formed  Osteoblasts secrete matrix and collagen  Calcium is deposited  Trabeculae form  Endochondral ossification (long bones) - begin as cartilage  Diaphysis ossifies before epiphysis  Epiphyseal plate - growth plate  Layers  Resting cartilage  Zone of proliferation, Zone of hypertrophy  Zone of calcification

20 Slide20 Fractures  Fracture - damages tissues and blood vessels  Vascular damage initiates repair  Fracture healing  Fracture - damages tissues and blood vessels  Vascular damage initiates repair  Fracture healing

21 Slide21 steps G Callus forms - specialized repair tissue - binds broken ends together G Fracture hematoma - blood clot - occurs after fracture, then resorbed and replaced by callus G Callus forms - specialized repair tissue - binds broken ends together G Fracture hematoma - blood clot - occurs after fracture, then resorbed and replaced by callus

22 Slide22 Compression fracture

23 Slide23 Depression fracture

24 Slide24 Impacted fracture

25 Slide25 Spiral fracture

26 Slide26 Greenstick Fracture

27 Slide27 Simple fracture

28 Slide28 Compound fracture

29 Slide29 Dislocation

30 Slide30 Cartilage  Characteristics  Avascular  Fibers embedded in gel  Flexibility of firm plastic  Chondrocytes - nutrients, oxygen by diffusion  Perichondrium- covering  Characteristics  Avascular  Fibers embedded in gel  Flexibility of firm plastic  Chondrocytes - nutrients, oxygen by diffusion  Perichondrium- covering

31 Slide31 Cartilage - differ because of amount of matrix and fibers  Types of cartilage  Hyaline cartilage - most common  Articular surfaces, found in trachea, bronchi, tip of nose  Elastic cartilage - external ear, epiglottis, eustachian tubes  Fibrocartilage - occurs in symphysis pubis, intervertebral discs  Types of cartilage  Hyaline cartilage - most common  Articular surfaces, found in trachea, bronchi, tip of nose  Elastic cartilage - external ear, epiglottis, eustachian tubes  Fibrocartilage - occurs in symphysis pubis, intervertebral discs

32 Slide32 Cartilage  Histophysiology of cartilage - permits cartilage to sustain great weight/serve as shock absorber  Growth of cartilage  Interstitial or endogenous growth - cartilage cels divide/secrete matrix - during childhood/adolescense  Histophysiology of cartilage - permits cartilage to sustain great weight/serve as shock absorber  Growth of cartilage  Interstitial or endogenous growth - cartilage cels divide/secrete matrix - during childhood/adolescense

33 Slide33 Cycle of Life: Skeletal Tissues  Ossified by mid-twenties  Adults—changes occur from specific conditions  Increased density and strength from exercise  Decreased density and strength from pregnancy, nutritional deficiencies, and illness  Advanced adulthood—apparent degeneration  Hard bone matrix replaced by softer connective tissue  Exercise can counteract degeneration  Ossified by mid-twenties  Adults—changes occur from specific conditions  Increased density and strength from exercise  Decreased density and strength from pregnancy, nutritional deficiencies, and illness  Advanced adulthood—apparent degeneration  Hard bone matrix replaced by softer connective tissue  Exercise can counteract degeneration

34 Slide34 Skeletal movement


Download ppt "Slide1 Chapter 7 Skeletal Tissues. Slide2 Introduction  Description of bone  Active living Tissue  Organ  Functions of bone  Muscle attachment "

Similar presentations


Ads by Google