M6 - Articulations

Question 1

Axial skeleton

Answer 1

Skull, spinal column, ribs

Question 2

Appendicular

Answer 2

Upper and lower limbs, pectoral girdle, pelvic girdle

Question 3

Articulations

Answer 3

Where a bone meets another bone, cartilage, or teeth

Question 4

Mobility vs stability

Answer 4

The more stable a joint, the more immobile it is, vice versa

Question 5

Factors the influence joint stability

Answer 5

Articular surfaces - shape influences movement possible and stability
Ligaments - capsules and ligaments prevent excessive motions
Muscle tone - help stabilize joints by keeping tension on tendons

Question 6

Synarthrosis

Answer 6

immobile joint, no joint cavity/capsule

Question 7

Amphiarthrosis

Answer 7

Joint w limited mobility, no joint cavity/capsule

Question 8

Diarthrosis

Answer 8

Freely mobile joints, articulating bones separated by fluid-filled joint cavity

Question 8

Joint cavity

Answer 8

Holds synovial fluid

Question 9

Synovial joint general anatomy

Answer 9

Articular capsule, synovial membrane, joint cavity, articular cartilage, ligaments, nerves and blood vessels

Question 10

Synovial joint accessories

Answer 10

Bursae, tendon sheaths, fat pads

Question 11

Bursae

Answer 11

Sacs containing synovial fluid, reduce friction

Question 12

Tendon sheaths

Answer 12

Elongated bursae around tendons, reduce friction

Question 13

Fat pads

Answer 13

Fill in spaces, provide protection

Question 14

Coronal plane

Answer 14

Separates front and back, paired w anteroposterior axis

Question 15

Sagittal plane

Answer 15

Separates R and L, paired w transverse axis

Question 16

Transverse plane

Answer 16

Separates top and bottom, paired w vertical axis

Question 17

Inversion

Answer 17

Foot inwards towards midline

Question 18

Eversion

Answer 18

Foot angled out

Question 19

Opposition

Answer 19

Thumb to pinky

Question 20

Reposition

Answer 20

Palms flat

Question 21

Nonaxial

Answer 21

Gliding, eg plane joint

Question 22

Uniaxial

Answer 22

Rotation or angular motion, eg pivot or hinge joint

Question 23

Biaxial

Answer 23

Angular motion, eg saddle joint or condylar joint

Question 24

Multiaxial

Answer 24

Rotation, angular motion, circumduction, eg ball and socket joint

Question 25

Plane joint

Answer 25

Nonaxial, gliding

Question 26

Hinge

Answer 26

Uniaxial, angular, one plane

Question 27

Pivot

Answer 27

Uniaxial, rotation around long axis

Question 28

Condylar

Answer 28

Biaxial, abduction, adduction, flexion, extension

Question 29

Saddle

Answer 29

Biaxial, angular, rotation

Question 30

Ball + socket

Answer 30

Multiaxial, movement in all axes