Olumide adeola pidan, Olumide pidan 2

Information about Olumide adeola pidan, Olumide pidan 2

Published on October 9, 2014

Author: praveen114731

Source: authorstream.com

Content

Anat 1 Chapter 8 : Articulations: Anat 1 Chapter 8 : Articulations Functional / Structural Classification of Joints: Synarthrosis (no movement) Bony Fusion ( Synostosis) Fibrous (Suture and Gomphosis) Cartilaginous (Synchondrosis) Amphiarthrosis (little movement) Fibrous ( Syndesmosis) Cartilaginous (Symphysis) Functional / Structural Classification of Joints Give example location for each 3) Diarthrosis (free movement) : Always synovial joints mono, di-, and triaxial Strength vs. motility The greater the range of motion, the weaker the joint. Dislocation = luxation Partial dislocation = ? “Double jointed” 3) Diarthrosis (free movement) Diarthroses = Synovial Joints: Diarthroses = Synovial Joints Have synovial cavity = space between two bones Components that are always present (fig 8-1) Components that are sometimes present 3 Types of Motion at Synovial Joints: 3 Types of Motion at Synovial Joints Linear motion = gliding Angular motion : flexion, extension, hyperextension ab-, adduction circumduction Rotation left - right, internal or medial, external or lateral supination, pronation Special Movements: Special Movements Dorsiflexion, plantar flexion Protraction, retraction Elevation, depression Eversion inversion 6 types of Diarthroses: 6 types of Diarthroses Gliding Joint Hinge Joint Pivot Joint Ellipsoidal joint Saddle joint Ball & Socket joint Gliding Joint: Gliding Joint articulating surfaces flat. •  also found between carpals and tarsals • only slight movement - rotation prevented by ? Hinge Joint: Hinge Joint Convex surface of bone 1 fits into concave surface of bone 2 found in ? monoaxial Pivot Joint: Pivot Joint Projection of bone 1 articulates within ring of bone 2 Also found in proximal ends of ulna and radius  pronation and supination rotation Intervertebral articulations: Intervertebral articulations Gliding joints between ____________________ Intervertebral discs: (Amphiarthroses )  annulus fibrosus: tough outer layer (fibrocartilage) nucleus pulposus: soft, gelatinous core Account for ~25% of vertebral column height – H 2 O loss during aging Intervertebral ligaments Fig 8-8

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