Joints. Flashcards
Define arthrology?
The study of the joints and ligaments.
Define intervening tissue?
The tissue that holds joints together.
Define a joint?
Where 2 or more bones are united by a common tissue.
What 3 functions can the study of arthrology be divided into?
The function of the joints.
The dysfunction of the joints.
The anatomy of the joints.
What 3 tissues will always be used to hold the bones in a joint together?
Fibrous tissue.
Elastic tissue.
Cartilaginous tissue.
Can joints be formed from a combination of tissues?
Yes, but only tissues that are made from the 3 types that are always found at joints.
What dictates the type of joint that is made?
The tissue within the joint.
What are the 3 major types of joint?
Fibrous joints.
Cartilaginous joints.
Synovial joints.
What tissue will be found in fibrous joints?
Fibrous tissue.
Do fibrous joints have a large range of movement?
No.
Fibres form tough connective tissue and do not allow for a huge range of movement within these joints.
Where are fibrous joints found within the body?
In places that do not perform large ranges of movement such as the skull.
Are the spaces between the bones in fibrous joints very large?
No, they are very narrow.
How does the space between bones in the joint affect the movement of a joint?
The more space found in a joint, the greater the range of movement.
What are the 3 major classes of fibrous joint?
Syndesmoses.
Suture.
Gomphoses.
What are syndesmoses joints?
These joints contain a large amount intervening tissue which will be made of a fibrous substance.
What is an example of a syndesmoses joint?
The joint that is formed between the ulna and the radius.
The joint that is found at the distal end of the tibia and fibula.
What kind of joint attaches the hyoid appartus to the petrus bone?
A syndesmoses joint.
Define gomphoses joints?
Peg and socket joints e.g. where a tooth slots into the skull.
Where are suture joints mainly found?
In the skull as they are mainly used to hold the flat bones of the skull together.
How can suture fibrous joints be further divided?
By the shape of the edge of the joint.
What is a serrated suture joint characterised by?
The material that binds the bones together creates a serrated edge which looks similar to the cutting edge of a saw.
Where are serrated suture joints usually found?
In stable areas of the body that do not receive any compression such as in the skull.
What are 2 examples of serrated joints in the skull?
The parieto-occipital union, where the parietal and occipital bones of the skull unite.
The inter-parietal union which is also located in the skull.
What are squamous suture joints characterised by?
By the fact that the articulating surfaces overlap with each other.
What parts of the body are squamous suture joints formed in?
In areas where a certain amount of movement is required to absorb the shock of a blow.
What are 2 examples of squamous suture joints within the skull?
The frontal maxillary union.
The frontal nasal union.
Where are plane suture joints found?
At bones that meet at right angles such as in the bones that form the face.
