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Flashcards in Human anatomy - joints quiz before class Deck (8)

Classify the joints by structure and function.

Function - amount of movement allowed
1 - synarthroses - no movement
2 - amphiarthroses - some movement
3 - diarthroses - freely movable
Structure - material attaching them to bone & presence/absence of cavity
1 - Fibrous
2 - Cartilaginous
3 - Synovial


Describe the general structure of fibrous joints. Provide examples of the three types of fibrous joints.

General structure:
- bones are connected by dense regular connective tissue (fibrous)
- no joint cavity
- generally immovable or slightly movable

Three types:
1 - Sutures - ex: sutures in the skull
2 - Syndesmoses - ex: short - distal tibiofibular articulation ;long - interosseus membrane between radius and ulna
3 - Gomphoses - ex: articulation of a tooth with its socket


Describe cartilaginous joints. Give examples of the two types.

- immobile to low mobility
- articulating bones are linked by cartilage
- no joint cavity
- two types: synchondroses and symphyses

Synchondroses - hyaline cartilage uniting the bones
- ex: epiphyseal plates
Symphyses - fibrocartilage
- ex: pubic symphysis


Define each of the following terms:
- synarthrosis
- syndesmosis
Which of these terms is a functional classification of joints.

Synarthrosis - Functional classification of joints where the joints are immovable.

Syndesmosis - joint where the bones are connected exclusively by ligaments. Subcategory of fibrous joints.

Synchrodrosis - a joint where hyaline cartilage joins the bones. Subcategory of cartilaginous joints.


What types of cartilage are found in the symphysis joint?
Name one location of this type of joint.

Both fibrocartilage (major component) and hyaline cartilage.
Hyaline cartilage is present in the form of articular cartilage on the bony surfaces to reduce friction.


List the six features common to all synovial joints.

1 - articular cartilage
2 - joint cavity
3 - articular capsule
4 - synovial fluid
5 - Reinforcing ligaments
6 - Nerves and vessels


How does an articular disk differ from articular cartilage?



What are the functions of synovial fluid?

nourish cells of the articular cartilage and function as a lubricant to ease the movement at the joint.