Chapter 8 Flashcards
(43 cards)
immovable joints
in axial skeleton
synarthroses
structural classification of joints
focuses on material binding the bones together and if a joint cavity is present
3 types: fibrous, cartilaginous and synovial
joints or articulations
sites where 2 or more bones meet
give our skeleton mobility and hold it together
weakest part of the skeleton
amphiarthroses
slightly movable joints
in axial skeleton
diarthroses
freely movable joints
in limbs
freely movable joints
in limbs
diarthroses
sites where 2 or more bones meet
give our skeleton mobility and hold it together
weakest part of the skeleton
joints or articulations
synarthroses
immovable joints
in axial skeleton
slightly movable joints
in axial skeleton
amphiarthroses
fibrous joints
bones joined by dense fibrous connective tissue
no joint cavity
movement depends on length of connective tissue fibers uniting the bones
most are immovable, some are slightly movable
3 types: sutures, syndesmoses and gomphoses
sutures
type of fibrous joint
occur only between bones of the skull
junction filled by a minimal amount of short connective tissue fibers
these allow the skull to expand as brain grows
in old age they ossify and skull bones fuse into a single unit called synostoses
synostoses
in middle age when fibrous tissue of sutures ossify and skull bones fuse into a single unit called this
syndesmoses
type of fibrous joint
bones are connected by ligaments
movement depends on lenth of connecting fibers
movement ranges from none to a lot (in radius and ulna)
gomphosis
type of fibrous tissue
fibrous connection is periodontal ligament
peg-in-socket fibrous joint
tooth in its bony aveolar socket
bones joined by dense fibrous connective tissue
no joint cavity
movement depends on length of connective tissue fibers uniting the bones
most are immovable, some are slightly movable
3 types: sutures, syndesmoses and gomphoses
fibrous joints
type of fibrous joint
occur only between bones of the skull
junction filled by a minimal amount of short connective tissue fibers
these allow the skull to expand as brain grows
in old age they ossify and skull bones fuse into a single unit called synostoses
sutures
in middle age when fibrous tissue of sutures ossify and skull bones fuse into a single unit called this
synostoses
type of fibrous joint
bones are connected by ligaments
movement depends on lenth of connecting fibers
movement ranges from none to a lot (in radius and ulna)
syndesmoses
type of fibrous tissue
fibrous connection is periodontal ligament
peg-in-socket fibrous joint
tooth in its bony aveolar socket
gomphosis
cartilaginous joints
joints where articulating bones are united by cartilage
lack joint cavity
not highly movable
2 types are synchondroses and symphyses
synchondroses
type of cartilaginous joints
hyaline cartilage that unites bones
most of these are synarthrotic (immovable)
e.g. epiphyseal plates in children and immovable joint between costal cartilage of the first rib and the manubrium of the sternum
symphyses
type of cartilaginous joints
joint where fibrocartilage unites the bone
limited amount of movement
these joints are for strength with flexibility
e.g. intervertebral joints and pubic symphysis of pelvis
synovial joints
joints where articulating bones are separated by joint cavity with fluid
a lot of movement
all of these joints are movable diarthroses
almost all joints of the limbs are these
joints where articulating bones are united by cartilage
lack joint cavity
not highly movable
2 types are synchondroses and symphyses
cartilaginous joints
