Unit 3 - Joints

Question 1

What is the articular system?

Answer 1

The articular system is a term that refers to the joints and the surrounding tissues that make connections, and therefore movement, possible.
Articulations: the points of contact between two connected bones.
Joints hold bones together and also allow for flexibility and various types of movement.

Question 2

How are joints classified? (Structure and function)

Answer 2

Structure and function

Question 3

Structure classification:

Answer 3

what they are made of.
3 main types: fibrous joints, cartilaginous joints and synovial joints. The bone structure limits the amount of movement in each joint.

Question 4

Function classification:

Answer 4

Functionally, joints are classified based on their range of motion they permit.

Question 5

Strcutural classification of joints

Answer 5

Fibrous
Cartalaginous
Synovial

Question 6

6 types of synovial joints

Answer 6

Ball and socket
Gliding
Hinge
Pivot
Saddle
Ellipsoid

Question 7

Fibrous joints:

Answer 7

Immovable (allow no movement)
Bound tightly together by connective tissue and allow no movement.
e.g., interlocking bones of the skull, known as sutures which become immobile after birth, teeth sockets

Question 8

Cartillaginous joints:

Answer 8

Slightly movable.
Bones are connected by means of cartilage.
e.g., intervertebral discs of spinal column (have a hard, elastic outer ring with a soft core, permitting some movement but also acting as shock absorbers), symphysis of pubis

Question 9

Synovial Joints:

Answer 9

Freely movable.
The most common joint.
6 types.
Bony surfaces are separated by a lubricating fluid (the synovia) and by cartilage. They are joined by ligaments that enclose the ends of articulating bones and form the capsule containing the synovial membrane.
e.g., the knee, shoulder, ankle

Question 10

Ball and socket joints