Joints!

Question 1

What is a joint?

Answer 1

A point of contact where two bones come together

Question 2

Why are joints important?

Answer 2

Without joints the human body wouldn’t be able to move

Question 3

What is the machine analogy?

Answer 3

Wear occurs at the parts of the machine that rub together when the machine is in motion

Question 4

What are the three classifications of joints?

Answer 4

Fibrous, cartilaginous and synovial

Question 5

What is the articular system?

Answer 5

The joints and surrounding tissues that make movement possible

Question 6

What are fibrous joints?

Answer 6

Joints bound together tightly by connective tissue, no movement involved

Question 7

What is an example of a fibrous joint?

Answer 7

The sutures in the skull

Question 8

What are cartilaginous joints?

Answer 8

Joints that connect bodies of bones

Question 9

What is an example of cartilaginous joints?

Answer 9

Intervertebral disks

Question 10

What are synovial joints?

Answer 10

Bony surfaces that are separated by lubricating fluid ( synovial fluid ) and cartilage

These joints are joined by ligaments and allow for the most movement

Question 11

What is a ligament?

Answer 11

Bands of elastic tissue enclosing ends of articulating bones to form the capsule containing the synovial membrane

Question 12

What is an example of a synovial joint?

Answer 12

The knee joint

Question 13

What is osteoarthritis?

Answer 13

The wear and tear of articular cartilage over a long period of time, resulting in the erosion of the articulating bone surfaces

Question 14

What is bursitis?

Answer 14

The inflammation of the bursa at the friction points between tendons, ligaments & bones

Question 15

What is a 1st degree sprain?

Answer 15

Few ligament fibres stretched

Question 16

What is a 2nd degree sprain?

Answer 16

Partially torn ligament fibres

Question 17

What is a 3rd degree sprain?

Answer 17

Entire ligament almost or fully torn

Question 18

What is a dislocation?

Answer 18

A bone displaced from its joint

Question 19

What is a separation?

Answer 19

Torn ligaments causing the bones in the joint to separate

Question 20

What is articular cartilage?

Answer 20

Located on the ends of bone that come in contact with other bone. Protects the end of the bone and allows for smooth contact surfaces for movement

Question 21

What is the joint capsule?

Answer 21

A fibrous structure that consists of yhe synovial membrane and fibrous capsule.

Question 22

What is the synovial membrane?

Answer 22

Allows certain nutrients to pass through the joint capsule

Question 23

What is the fibrous capsule?

Answer 23

It keeps the synovial fluid from leaking out of the joint capsule

Question 24

What is the joint cavity?

Answer 24

Located between the articulating bony surfaces, filled with synovial fluid to act as a lubricant for the joint

Question 25

Why is the synovial fluid essential as part of the joint?

Answer 25

It helps to reduce friction and provides nutrients for the articulating cartilage

Question 26

What is the bursae?

Answer 26

Small fluid filled sacs found at friction points between tendons, ligament and bones

Question 27

What are the intrinsic ligaments?

Answer 27

Thick bands of fibrous connective tissues that help thicken and reinforce the joint capsule

Question 28

What are extrinsic ligaments?

Answer 28

They reinforce for the joint by attaching bones together

Question 29

What is the difference between tendons and ligaments?

Answer 29

Ligaments attach bone to bone, tendons attach bone to muscle

Question 30

What are the six types of synovial joints?

Answer 30

Ball and socket, hinge, saddle, pivot, ellipsoid, gliding

Question 31

What does uni axial mean?

Answer 31

A joint that moves mainly in one plane

Question 32

What does bi axial mean?

Answer 32

A joint that moves in two planes

Question 33

What does tri axial mean?

Answer 33

A joint that moves in three planes

Question 34

What synovial joints are uni axial?

Answer 34

Hinge, gliding and pivot joints

Question 35

What synovial joints are bi axial ?

Answer 35

Ellipsoid and saddle

Question 36

What synovial joints are tri axial?

Answer 36

Ball and socket joints