Ex 13. Articulations- joints - hold bones together - Allows for movement Classified based on -...
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Transcript of Ex 13. Articulations- joints - hold bones together - Allows for movement Classified based on -...
Articulations- joints- hold bones together - Allows for movement
Classified based on- Structure- functionality
Functional classifications Synarthroses – immovable Amphiarthroses- slightly movable Diarthroses-freely movable
Types of Joints
Fibrous Joints- Bones joined by fibrous tissue, no
joint cavity- sutures- Syndesmoses (articulating bones are
connected by ligaments - tibia and fibula)
- Gomphosis- tooth in socket
Cartilaginous Joints-articulating bone ends are connected
by a plate or pad of cartilage- symphyses- bones connected by a broad flat disc of fibrocartilage (intvert. Joints)
- synchondroses- bones are untied by hyaline cartilage (costal cart. And first rib)
Gliding joint
Manubrium
Clavicle
Hinge joint
Humerus
Ulna
Pivot joint
Atlas
Axis
Ellipsoid joint
Radius Ulna
Scaphoidbone
Saddle joint
Trapezium
Metacarpalbone ofthumb
HumerusScapula
Ball-and-socket joint
Triaxial
Biaxial
Biaxial
Monaxial(rotation)
Monaxial
Slight nonaxialor multiaxial
• Acromioclavicular and claviculosternal joints
• Intercarpal and intertarsal joints
• Vertebrocostal joints
• Sacroiliac joints
• Elbow joint
• Knee joint
• Ankle joint
• Interphalangeal joint
• Atlas/axis
• Proximal radio-ulnarjoint
• Metacarpophalangeal joints 2–5
• Metatarsophalangealjoints
• Radiocarpal joint
• First carpometacarpaljoint
• Shoulder joint
• Hip joint
III III
Joint Movements
Every muscle that is attached a bone has two points:
Origin- stationaryInsertion-movable attachment
Hyperextension
Hyperextension
Hyperextension
Extension
Extension
Extension
Flexion
Flexion
Flexion
Flexion
Extension
Synovial JointsHip Joint- Ball and socket- Movement in all planesKnee Joint- Three different types of joints- Movements: extension, flexion, and rotationShoulder Joint-most freely moving-movements: flexion, extension, abduction ,
adduction, circumduction, and inner and outer rotation
Temporomandibular Joint (TMJ)-two different joins