Ch. 9JOINTS(aka…

articulations)

HUMAN ANATOMY

Per. 3

•Complete your wkst before you do Joint Aerobics!

Per. 1 start

“Synarthrosis”

“Amphiarthrosis”“Diarthrosis” (synovial joints)

e. Ellipsoid/Condyloid: wrist

f. Gliding: metatarsals & phalanges

oTENDONS: cartilage that connect skeletal muscle to boneo Pass across or around joint o Can limit range of motiono Provide support

Per. 2

• Dislocation (luxation)• Articulating bones are forced

out of position by extreme stress• Can cause damage to

cartilage, ligaments or distort the joint cavity

• Subluxation• Partial dislocation• Less severe• “double-jointed” persons

more likely to suffer subluxation

• Gliding: 2 surfaces slide past each other

• Circumduction: circular movement of a body part; a combination of flexion, extension, adduction, & abduction

• Rotation: motion that occurs when a part turns on its axis

Pg. 263-267

• Flexion/extension/ hyperextension• Flexion: bending movement that

decreases the angle between 2 parts

• Extension: straightening movement that increases the angle between body parts

• Hyperextension: movement beyond the normal position

Pg. 263-267

• Supination/pronationSupination: rotation of forearm so that the

palm faces anteriorly (up)Pronation: rotation of forearm that moves

the palm from an anterior-facing position to a posterior-facing position (down)

• Opposition: motion involving a grasping of the thumb & fingers

Pg. 263-267

Pg. 263-267

• Inversion/eversion• Inversion: movement of sole of foot towards median plane • Eversion: movement of sole of

foot away from median plane

• Retraction/protraction• Retraction: posterior

movement of arms at the shoulders• Protraction: anterior

movement of arms at the shoulders

Pg. 263-267

• Depression/elevation• Depression: movement in an

inferior direction• Elevation: movement in a

superior direction

• Dorsiflexion/plantar flexion• Dorsiflexion: extension of

entire foot superiorly• Plantar flexion: flexion of

entire foot inferiorly

• Lateral flexion: flexion from side to side

Pg. 263-267

• Abduction/adduction• Abduction: motion that pulls a structure or part away from the

midline of the body

• Adduction: motion that pulls a structure or part towards the midline of the body

Now complete the Joints Movements side

of your wkst!

Skull Decorating Contest• Each group will have one skull to decorate

• There will be 2 winners: most creative and most anatomically correct

• Winners get extra credit!

• Requirements: Sutures are identified with lines, bones need to be labeled or colored, all group members names need to be listed, and you must use at least 4 colors