Module 3E: Joints Flashcards
what is another name for joints?
articulations or arthroses
what is a joint?
where two or more bones meet
- or the point of contact between two bones, bone and cartilage, or between bone and teeth
what are the two functions of joints?
- give our skeleton mobility
- hold skeleton together
what are the two ways we classify joints?
class and type
what are the three joint classes?
- fibrous
- cartilaginous
- synovial
what is joint class?
- where articulations (joints) are classified on the type of tissue holding the joints together
what is joint type?
- where articulations (joints) are classified based on the function of the joint (the type of movement)
what are the types of fibrous joints?
- suture
- syndesmosis
- gomphosis (special type of syndesmosis)
- interosseous
what are the types of cartilaginous joints?
- synchondrosis
- symphysis
what are the types of synovial joints?
- plane
- hinge
- pivot
- condylar
- saddle
- ball and socket
in fibrous tissue, bones are joined by?
collagen fibers of connective tissue
can fibrous joints move?
either very slightly or immovable
what is a suture joint?
- type of fibrous joint
- where the fibers in the joints between the bones and the irregular bone edges, interlock to give the joint strength, and decrease the chance of fracturing
- often called a bone joint because often these bones are fused
where is the only place suture joints are found?
the skull
- immovable after one year of age
what is a syndesmosis joint?
- where a ligament in the tissue that connects one bone to another bone and they are located on the outside of the two bones they join
- example: distal tibiofibular joint
are syndesmosis joints movable?
slightly
what is a gomphosis joint?
- a type of fibrous tissue
- special type of syndesmosis joint
what holds a gomphosis joint in place?
very very short collagen fibers
what joint is found in our teeth?
gomphosis joint
- only place it is found
what is the gomphosis joint often called?
a peg and socket fibrous joint
- where the periodontal ligament holds the roots of our teeth in the socket
what is the interosseous membrane joint?
- a type of fibrous joint
- have a substantial sheet of connective tissue that binds two long bones together
- permits slight movement
- provides an increased attachment surface for muscles
what are our two locations of the interosseous membrane joint?
- in the forearm between the radius and ulna
- in our leg between the tibia and fibula
in cartilaginous joints, bones are tightly connected by?
either by hyaline or fibrocartilage
are cartilaginous joints moveable?
- immoveable or slightly moveable