Joints Flashcards
Joint
any place where adajcent bones come together to form connection
Identify 3 Structural Classification of Joints
- Fibrous Joints
- Cartilagious Joints
- Synovial Joints
Fibrous Joints
joined by fibrous CT ( Connective Tissue)
- most stable bone
Cartilagious Joints
joined by cartilage
Name the Fibrous Joints?
- Suture
- Gomphosis
- Syndesmosis
Suture
-immobile joint of skull
Gomphosis
-a joint between tooth and alveolus of maxilla or mandible
Syndemosis
- connect parallel ones w/ sheets of fibrous CT ( Connective TIssue )
- bones in forearm n legs
Name the Cartilaginous Joints?
- Synchondrosis
- Symphysis
Syncondrosis
- a joint where bone are joined by hyaline cartilage
- - epiphyseal plate
Symphysis
joint where bones are joined by fibrocartilage
- pubic symphysis
- intervertebral disc
Names 6 Synovials Joints?
- Ball-and-socket joint - Condyliod Joint - Saddle Joint
- Plane Joint - Pivot Joint - Hunge Joint
Ball-and -socket Joint
ball-liked head that fits into cup-like cocket
- shoulder and hip joint
Condyloid Joint
shallow depression that fits into rounded structure
- proximal phalanges and metacarpals
Saddle Joint
Two saddle-shaped surface that fit together
- carpometacarpal joint of the thumb
Plane Joint
two flattened surfaces
- joints between carpals
Pivot Joint
rounded structure that rotates within a ring
- joint between C1 and C2
Hunge Joint
convex surface that fits within concave depression
- trochlea and trochlear notch
Articular Capsule
- CT structure that encloses the joint cavity
Articular Cartilage
-later of hyaline cartilage that reduces friction
Synovial Membrane
- thin, inner lining
- Synovial Fluid provides lubcrication
Ligaments
-strong band of dense CT that connects bone to bone
Rotator Cuff
- CT structure formed by 4 rotator cuff muscle tendons
- it attach to rotator cuff muscle of the shoulder
Bursa
- CT sac that contains lubricating fluid to reduce friction
- -bursa add protection n reduce friction to moving structure
Tendon Sheaths
-fluid-filled CT sac that surrounds a tendon to reduce friction
Somme jonts have fribtocartilage structures
- Articular Disc– small n oval shaped
- Meniscus – large n C-shaped
Acromioclavicular Ligament
- connects acromion n clavicle
- —- sprained in shoulder separations
Coracoclavicular Ligament
-connect coracoid process to clavicle
Coracoacromial Ligament
connect coracoid process to acromion
Coracohumeral Ligament
-connects coracoid process to the humerus
Glenohumeral ligaments
-3 ligaments connect the glenoid cavity to the humerus
Glenoid Labrum
-ring of fibrocartilage around glenoid cavity
Separation
- not damaged
- Acromioclavicular Joint
Dislocation
- damaged
- Glenuhumeral joint
Flexion
-a movement that decreases the angle of a joint
— muscle pushes up, doesn’t pull
ex;squating ( starting as standing then to bending the knee)
Extension
- a movement that increases the angle of joint
- part limbs move backward
- Ex; starting as bending the knee to standing up
Abduction
movement of a body part laterally away from midline
- moves on the side
- EX; moving the legs sideway
- Ex using the weights, moving arms sideways
Adduction
movement of a body part medially toward midline
- move medial
- Ex; leg work, moving the legs sideways
Lateral Flexion
- bending of head or body toward the right or the left
Left & Right Rotation
turns head or body to the right or the left
Medial (Internal ) Rotation
- turn anterior aspect of limb toward midline
Lateral ( External)
- turns anterior aspect of limb from midline of body
Circumduction
- circular motion produced by flexion, extension and adduction
- moves circally
Elevation
upward movement of body part
Depression
-downward movment of body part
Protraction
-anterior movement of a body part
Retraction
-posterior movement of body part
Pronation
-mv=oves the palms to a backward-facing position
Sapination
-moves the palm to a foward-facing position
Oppossition
-moves thumb toward fingertip
Reposition
-moves thumb to the anatomical position
Dorsiflexion
-moves top of foot toward anterior leg
Plantar Flexion
-moves to point the toes downward
Inversion
-moves the bottom of foot towards the midline
Eversion
-moves the bottom of foot away from the midline