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BLG chapter 8 Exam questions and answers
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Exam of 5 pages for the course BLG at BLG (BLG chapter 8 EXAM)
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BLG chapter 8Joint (articulation) - answersites where two or more bones meet
Function of Joints - answergive skeleton mobility and hold skeleton together
Classifications for Joints (2) - answer- Structural
- Functional
structural joint classification - answer-fibrous
-cartilaginous
-synovial (most common)
Functional joint Classification - answersynarthroses, amphiarthroses, diarthroses
Synarthroses - answerimmovable joints
ampthiarthroses - answerslightly movable joints
Diarthroses - answerfreely movable joints
Fiberous Joint - answer- bones joined by dense fibrous connective tissue
- no joint cavity
- most are immovable
- sutures
-syndesmoses
- Gomphoses
Suture Joint - answerJoint help together with very short, interconnecting fibers and bone
edges interlock
- only found in skull
- only moveable during birth
Syndesmosis - answer-Joint held together by a ligament
-Fibrous tissue can vary in length, but is longer than in sutures.
-not made to move
, fibula to tibia
Gomphosis - answer"Peg in socket" fibrous joint. Periodontal ligament holds tooth in
socket.
teeth
cartilaginous joints - answerbones united by cartilage
-no joint cavity
-not highly movable
- synchondroses
- symphyses
Synchondrosis - answer-bones are bound by hyaline cartilage
- Epiphyseal plate
- joint between first rib and sternum
symphyses joint - answerBones united by fibrocartilage
- fibrocartilaginous intervertebral disc
- public symphysis
synovial joints - answer-bones separated by fluid-filled joint cavity
- all are diarthrotic
-freely moveable
Synovial Joints general Structure - answer1. Articular cartilage
2. Joint (synovial) cavity
3. Articular capsule
4. Synovial fluid
5. Reinforcing ligaments
6. Nerve and blood vessels
articular cartilage - answerconsists of hyaline cartilage covering ends of bones
-prevents crushing of bone ends
Joint (synovial) cavity - answersmall, fluid-filled potential space that is unique to synovial
joints
Articular (joint) capsule - answertwo layers thick
External fibrous layer: dense irregular connective tissue
Inner synovial
membrane: loose connective tissue that makes synovial fluid
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