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Copyright © 2009 Pearson Education, Inc. Chapter 5- The Skeletal System Structure of bone Bone Development Axial and appendicular bone Joints- articulations Bone diseases
Copyright © 2009 Pearson Education, Inc. Skeletal System: Made of Connective Tissue Bone: hard inorganic matrix of calcium salts Compact: forms shaft and ends, contains marrow space Spongy: trabeculae Cells: osteoblast, osteocytes, osteoclasts Types: long, flat, irregular Osteons/haversian system: cellular arrangement Periosteum: CT covering
Copyright © 2009 Pearson Education, Inc. Structure of Bone Figure 5.1
Copyright © 2009 Pearson Education, Inc. Cartilage and Ligaments Cartilage Function: support Types: fibrocartilage, hyaline, and elastic cartilage Ligaments Function: attach bone to bone
Copyright © 2009 Pearson Education, Inc. Bone Development Prenatal: cartilage model Fetus: some conversion to bone Childhood: primary and secondary ossification sites formed Adolescence: cartilage growth plate elongates
Copyright © 2009 Pearson Education, Inc. Bone Development (cont.) Figure 5.2
Copyright © 2009 Pearson Education, Inc. Animation—Bone Repair Mature Bone Remodeling and Repair Changes in shape, size, strength Dependent on diet, exercise, age Bone cells regulated by hormones Parathyroid hormone (PTH): removes calcium from bone Calcitonin: adds calcium to bone Repair: hematoma and callus formation PLAY
Copyright © 2009 Pearson Education, Inc. Functions of the Skeletal System Protection: encases most internal organs Support: allows body positions Permits movement: muscle attachments for movement Mineral reservoir: calcium and phosphorus
Copyright © 2009 Pearson Education, Inc. Skeletal System: Frontal View Figure 5.5 Cranium Maxilla Mandible Clavicle Sternum Ribs Humerus Vertebrae Ulna Radius Coxal bone Sacrum Femur Patella Tibia Fibula Tarsals Metatarsals Phalanges Carpals Metacarpals Phalanges Scapula Axial skeletonAppendicular skeleton
Copyright © 2009 Pearson Education, Inc. Axial Skeleton: The Skull Figure 5.6 External auditory meatus Occipital bone Temporal boneParietal bone Sphenoid bone Frontal bone Zygomatic bone Ethmoid bone Lacrimal bone Nasal bone Maxilla Mandible Occipital bone Maxilla Palatine bone Foramen magnum Vomer bone Sphenoid bone Zygomatic bone
Copyright © 2009 Pearson Education, Inc. Axial Skeleton: Vertebral Column Figure 5.7 Cervical vertebrae (7) Thoracic vertebrae (12) Lumbar vertebrae (5) Sacrum (5 fused) Coccyx (4 fused) Intervertebral disks
Copyright © 2009 Pearson Education, Inc. Axial Skeleton: Vertebral Column (cont.) Vertebral column Regions: cervical, thoracic, lumbar, sacral, coccygeal Intervertebral disks: cushion vertebrae; assist in movement and flexibility Ribs Twelve pairs Bottom two pair floating Sternum: breastbone Three bones fused together
Copyright © 2009 Pearson Education, Inc. Appendicular Skeleton Pectoral girdle: shoulder Clavicle and scapulas Pelvic girdles: hip Coxal bones, sacrum, pubic symphysis Limbs Arms: humerus, radius, ulna, wrist and hand bones Legs: femur, tibia, fibula, ankle and foot bones
Copyright © 2009 Pearson Education, Inc. Joints (Articulations) Classified by degree of movement Fibrous joint: immovable (e.g., fontanels) Cartilagenous joint: slightly movable, cartilage connection (e.g., backbone) Synovial joint: freely movable
Copyright © 2009 Pearson Education, Inc. Synovial Joints Figure 5.12a
Copyright © 2009 Pearson Education, Inc. Synovial Joints (cont.) Joint capsule: synovial membrane + hyaline cartilage Synovial membrane secretes synovial fluid as a lubricant Hyaline cartilage acts as a cushion
Copyright © 2009 Pearson Education, Inc. Diseases and Disorders of the Skeletal System Sprains: stretched or torn ligaments Bursitis and tendinitis: inflammations Arthritis: inflammation of joints
6-2 Bone cells Osteoblasts Osteocytes Osteoclasts Stem cells or osteochondral progenitor cells Woven bone : collagen fibers randomly oriented Lamellar.
Slide 0 Copyright © Elsevier, Inc. All Rights Reserved. Chapter 6 The Skeletal System.
ELAINE N. MARIEB EIGHTH EDITION 5 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings PowerPoint ® Lecture Slide Presentation by.
SKELETAL SYSTEM ORGANS THAT ARE CALLED BONES NUMBER OF ADULT BONES 206.
Skeletal System Functions: Supports the body; Protects organs (ribs, sternum, skull); Place for muscles to attach; Stores Ca; Makes blood (hematopoiesis)
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SKELETAL SYSTEM. Functions: 1. Physical support and protection of the internal organs 2. Responsible for body movement together with muscles 3. Serves.
Structure and Function on the Skeletal System.. Structure of the Skeleton We know that the 206 bones of the skeleton are split into two different groups…
P1. Functions: 2) Provides a framework for the body 1) Allows movement of the body as a whole and its individual parts The skeleton gives the body its.
1 Axial (the center or axis) Appendicular (legs and arms) Skeletal Organization Skeleton is divided into two divisions!
Describe the structure and function of the skeletal system Describe the different classifications of joints Identify the location of the major muscles.
Skeletal System. Bones: 22 skull22 skull 27 hand27 hand 26 foot26 foot.
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1 THE MUSCULOSKELETAL SYSTEM 2 Objectives Name the parts of the musculoskeletal system and discuss the function of each part. Define combining forms.
Jeopardy Bone Structure Axial Skeleton Appendicular Skeleton Joints Potpourri Q $100 Q $200 Q $300 Q $400 Q $500 Q $100 Q $200 Q $300 Q $400 Q $500 Final.
NervousSystem Integumentary System Skeletal System Muscular System Circulatory System Respiratory System Digestive System Excretory System Endocrine System.
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Anatomy & Physiology The Human Body. Body Organization What’s the smallest unit of life? What’s the smallest unit of life? Cell Human Body: 100 trillion.
Lesson 1 How is it possible for you to perform motions such as stretching and rolling your shoulders? The interaction of bones and muscles allows you.
The Skeletal System by Jim Alton Lesson 2 The Skeletal System Objectives – Name the major groups of the skeletal system. Identify bones using common.
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The Skeletal System Supports the body Protects soft organs Allows movement due to attached skeletal muscles Stores minerals and fats Blood cell formation.
The Skeletal System Anatomy & Physiology OMHS. Learning Targets:I can… identify the skeletal subdivisions, major bones, and joints of the human body.
Musculoskeletal System Review. Shock absorbers for the spine Intervertebral disks Bone cells that build new bone Osteoblasts Fluid sac allows for easy.
INTRODUCTION VIDEO. BONES TEST YOUR KNOWLEDGE... How many bones make up the Skeletal System?
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Developmental Aspects of Tissue Primary germ layers: ectoderm, mesoderm, and endoderm.
Structure and Function of the Musculoskeletal System Chapter 41 Mosby items and derived items © 2010, 2006 by Mosby, Inc., an affiliate of Elsevier Inc.
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