Joints

Question 1

Joint

Answer 1

the union/articulation of two structures​, the stricture is united, cartilage to cartilage joints, bone to bone joints, bone to cartilage joints

Question 2

Functional Classification of Joints

Answer 2

least movement to most movement

Synarthrodial​

Amphiarthrodial​

Diarthrodial

Question 3

Structural Classification of Joints

Answer 3

Fibrous​

Cartilaginous​

Synovial

Question 4

Synarthrodial/ Fibrous Joints

Answer 4

most immoveable type of joint, typically bound together by fibrous tissue ​

Question 5

Types of Fibrous Joints

Answer 5

Gomphosis​- Socket for tooth: allows minimal amount of movement​

Suture​- suture in skull: immovable after infancy​

Question 6

Amphiarthroidal/ Cartilaginous Joint

Answer 6

Cartilage provides the union between two bones​, Allows limited (slight to moderate) movement

Synchondrosis Joint​- Bones joined by or united to hyaline cartilage (i.e. stenocostal joint - between the cartilage of the ribs and the sternum)​

Symphysis Joint​- Intervertebral disks: slight movement between bones​

Question 7

Disarthrodial/ Synovial Joints

Answer 7

all include a joint cavity containing synovial fluid around which is an articular capsule​, most freely movable joints in the body

Structure- bone, Hyaline Cartilage, Ligament, Synovial Membrane, Synovial Cavity filled with Synovial Fluid

Question 8

Types of Synovial/ Diarthrodial Joints

Answer 8

Pivot Joint​

Cricoitheriod Joint (joint between the cricoid cartilage of the larynx and the thyroid cartilage of the larynx)​ STRUCTURE: synovial joint​ FUNCTION: muscle contraction allows the cricoid cartilage to rotate upward and the thyroid cartilage to rotate downward​

Saddle Joint​

Cricoarytenoid Joint (joint between the cricoid cartilage of the larynx and the arytenoid cartilage of the larynx
STRUCTURE: synovial joint ​
FUNCTION: muscle contraction allows rocking of the arytenoid cartilage and sliding of the arytenoid cartilage​

Condyloidal Joint​

Joint between the mandible and temporal bone: free movement for opening and closing plus some side to side movement​

Pivot Joint​

Medial atlanto-axial joint (joint between first two vertebra): allows rotation of the head to left and right​