Unit 3: Full Anterior Skeleton Homework/Notepage

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Presentation transcript:

Unit 3: Full Anterior Skeleton Homework/Notepage Print this Page Name:__________________________ Period: ____ Unit 3: Full Anterior Skeleton Homework/Notepage Print this Page

Introduction to The Skeletal System

Skeletal System Osteology: (Osteo=bone) The study of the structure and function of the skeleton/bones Function: Protection: Organs Support: Framework Movement: Levers Storage: Fat and Minerals (calcium and phosphorus) How many Bones? 206 Skeletal System is divided into two categories: Axial Skeletal System Appendicular Skeletal System

Axial Skeleton Function: Provides central support for body and protects internal organs Skull Ribcage Vertebrae

Appendicular Skeleton Function: Provides attachment points for muscles that allow movement. Limbs (arms/legs) Girdles (shoulder/pelvis)

Every bump, groove, and hole has a name on your bones BONE MARKINGS Every bump, groove, and hole has a name on your bones

Bone Markings Two types of bone markings: Projections (processes) grow out from the bone Sites for muscle attachment Help to form joints

Bone Markings Two types of bone markings: Depressions/Openings (cavities) that indent the bone Allows blood vessels and nerves to pass

Joint Projections 1) Condyle: Rounded articular projection Condyle

Joint Projections 2) Head: bony expansion on a narrow neck 3) Facet: smooth, nearly flat articular surface

Joint Projections 4) Ramus: Armlike bar of bone

Ligament/Tendon Projections 1) Crest: Narrow ridge of bone (Line: smaller than a crest) 2) Epicondyle: Raised area on or above a condyle ULNA

3) Tubercle: Small rounded projection 4) Tuberosity: large rounded or roughened projection 5) Trochanter: very large, blunt projection (only on femur)

6) Spine: Sharp, pointed projection Thoracic Vertebrae

DEPRESSIONS Allow blood vessels or nerves to pass through. 1) Meatus: (me - A- tus) Canal or tube

Depressions 2) Fossa: shallow basin 3) Fissure: narrow, slit-like opening

Depressions 4) Sinus: Cavity within a bone; filled with air and lined with mucous membranes 5) Foramen: Round or oval opening Foramen Magnum

Depressions 6) Sulcus, Groove or Furrow: a shallow depression