Joints

Question 1

What is a joint?

Answer 1

Joints are the location where bones come together

Question 2

How are joints functionally classified?

Answer 2

It’s determined by the amount of mobility found between adjacent bones.

Question 3

What are the three main classifications of joints?

Answer 3

Syntharthrosis
Amphirthrosis
Diarthrosis

Question 4

Define syntharthrosis joint

Answer 4

Immobile joint

Question 5

Define amphiarthrosis joint

Answer 5

Slightly moveable joint

Question 6

Define diarthrosis joint

Answer 6

Freely moveable joint

Question 7

What is the structural classification of joints based on?

Answer 7

It’s based on whether the articulating surfaces of he adjacent bones are directly connected by fibrous connective tissue or cartilage, or whether the articulating surfaces contact each other within a fluid filled joint cavity.

Question 8

What are the three structural joint classifications?

Answer 8

Fibrous joint
Cartilaginous joint
Synovial joint

Question 9

Define fibrous joint

Answer 9

Where the adjacent bones are united by fibrous connective tissue

Question 10

Define sutures and what type of joint is it?

Answer 10

Joins most bones in the skull, a fibrous joint

Question 11

Define syndemosis

Answer 11

Type of fibrous joint in which two Parallel bones are united to each other y fibrous connective tissue .

Question 12

Define gomphosis

Answer 12

A specialized fibrous joint that anchors a tooth to its socket on the jaw

Question 13

At cartilagenous joints, what happens in synchondrosis ?

Answer 13

Bones that are united by hyaline cartilage to form a synchondrosis

Question 14

At cartilaginous joints, what happens to form a symphysis?

Answer 14

Bones are united by fibrocartilage to form a symphysis

Question 15

Define synovial joint

Answer 15

The articulating surfaces of bones are not directly connected, but come into contact with each other within a joint cavity that is filled with lubricating fluid

Question 16

What are the most common joints in the body?

Answer 16

Synovial joints

Question 17

synovial joints subdivided based on what?

Answer 17

The shapes of the articulating surfaces of the bones that form each joint

Question 18

Name all the synovial joints

Answer 18

Plantar
Hinge
Pivot
Condylar
Bicodylar
Saddle
Ball and socket

Question 19

Define planar joint and give a location example

Answer 19

At. Planar joint the surfaces of the bones are flat , which allows the bones to slide up against each other. They are found in the carpal bones of the wrist or tarsal bones f the foot.

Question 20

Define hinge joint and give location example

Answer 20

Convex end of one bone articulates with the concave end of of adjoining bone. It allows only for bending and straightening motions, like The elbow joint

Question 21

Define pivot joint and give example

Answer 21

Rounded portion above a bone is enclosed within a ring formed partially by the articulation with another bone and partially by a ligament . The bone rotates within the ring . Like the atlantoaxial joint found between C1 (atlas) and C2 (axis) vertebrae

Question 22

Define condylar joint and give example

Answer 22

The shallow depression at the end of one bone articulates with a rounded structure from an adjacent bone. Like the knuckle joints of the hand

Question 23

Define bicondylar joint and give example

Answer 23

Two distinct surfaces on one bone articulate with corresponding distinct surfaces on another bone, like the knee joint

Question 24

Define saddle joint and give example

Answer 24

Both articulating surfaces have a saddle shape, which is concave in one direction and convex in the other, like first metacarpal bone at the base of the thumb

Question 25

Define ball and socket joint and give example

Answer 25

The rounded head of one bone ( ball) fits into the concave articulation ( socket ) of adjacent bone, like the hip joint and shoulder joint .

Question 26

WHat joint has the greatest range of motion?

Answer 26

Ball and socket joint