Joints Flashcards
1
Q
What is a joint?
A
Union between two or more rigid components (bone or cartilage)
2
Q
What are the different types of joints?
A
- fibrous
- cartilaginous
- synovial
3
Q
What are fibrous joints?
A
- dense, fibrous connective tissue
- high tensile strength
- little movement in adults
4
Q
What are examples of fibrous joints?
A
- periodontal ligament
- cranial sutures
- interosseus membranes
5
Q
What are cartilaginous joints?
A
Layers of cartilage
6
Q
What are the two types of cartilaginous joints?
A
- synchondroses (primary)
- symphyses (secondary)
7
Q
What are synchrondroses?
A
- allow for bone growth
- disappear in adults
- no movement
8
Q
What are symphyses?
A
- do not ossify with age
- found in midline of body
- limited movement
9
Q
What are synovial joints?
A
- greatest movement
- common features
- may also contain articular discs and ligaments
10
Q
What are examples of synovial joints?
A
- hinge
- saddle
- plane
- pivot
- condylar
- ball and socket
11
Q
What makes joints stable?
A
- shape of articulating surfaces
- fibrous capsule & ligaments
- muscles
12
Q
What is Hilton’s law?
A
The nerve supplying a muscle that crosses a certain joint, also innervates this joint
