Joints

Question 1

Synarthroses

Answer 1

immovable

Question 2

amiphiarthroses

Answer 2

slightly movable

Question 3

diathroses

Answer 3

freely movable

Question 4

gliding joint

Answer 4

relatively flat joint surfaces. some movement possible by gliding or twisting

Question 5

hinge joint

Answer 5

allows movement around one axis

Question 6

ball and socket joint

Answer 6

allows movement around multiple axes.

Question 7

saddle joint

Answer 7

two reciprocally concave/convex surfaces. allows movement to occur around perpendicular axis

Question 8

condyloid joint

Answer 8

modified ball and socket allowing movement around two perpendicular axes. passive movement may occur around a third axis

Question 9

ellipsoid joint

Answer 9

similar to ball and socket but with ellipsoid surfaces. movement can only occur around two perpendicular axis

Question 10

fibrous joint

Answer 10

bones are connected by dense connective tissues
examples: sutures, gomphosis, sydesmosis

Question 11

sutures

Answer 11

narrow fibrous joints found where bones of the skull meet

Question 12

gomphosis

Answer 12

fibrous joint where a peg fits into a socket. found where roots of teeth are held in place

Question 13

sydesmosis

Answer 13

fibrous joints united by larger connective tissue e.g. ligament between radius and ulna

Question 14

cartilaginous joint

Answer 14

a joint where bones are entirely joined by cartilage, either hyaline cartilage or fibrocartilage
example: synchondroses, symphysis

Question 15

sychondroses

Answer 15

bones united by continuous layer of hyaline cartilage. present at epithesial growth plates

Question 16

symphysis

Answer 16

a joint where the articulating joints involved are covered in hyaline cartilage and have padded cartilage between them, allowing a small amount of controlled movement to take place. e.g. between vertebrae

Question 17

synovial joint

Answer 17

freely movable. surfaces or bones are covered in articular cartilage, enabling the bones to move against each other with limited friction. they have a joint capsule strengthened by ligaments and muscles.
examples: gliding, hinge, pivot, ball and socket, saddle, ellipsoid, condyloid

Question 18

which joints are the most unstable?

Answer 18

movable