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Questions and Answers
List the three structural categories of joints and briefly describe the criteria used for structural classification of joints.
List the three structural categories of joints and briefly describe the criteria used for structural classification of joints.
The structural types of joints include fibrous joints, cartilaginous joints, and synovial joints. Joints can be classified structurally based on the presence or absence of a synovial cavity and the type of connective tissue that binds the bones together.
Which type(s) of joint(s) lack(s) a joint cavity and is(are) held together by a fibrous connective tissue?
Which type(s) of joint(s) lack(s) a joint cavity and is(are) held together by a fibrous connective tissue?
Which type(s) of joint(s) lack(s) a synovial cavity?
Which type(s) of joint(s) lack(s) a synovial cavity?
List the three functional classifications of joints, and briefly describe the basis for the functional classification of joints.
List the three functional classifications of joints, and briefly describe the basis for the functional classification of joints.
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Which functional class(es) of joint(s) allow(s) movement?
Which functional class(es) of joint(s) allow(s) movement?
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A suture is structurally classified as?
A suture is structurally classified as?
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A suture is functionally classified as?
A suture is functionally classified as?
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The epiphyseal plate in a growing long bone is an example of?
The epiphyseal plate in a growing long bone is an example of?
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Which characteristic(s) describes all synovial joints? Select all that apply.
Which characteristic(s) describes all synovial joints? Select all that apply.
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What unique characteristics would a person who is 'double-jointed' possess?
What unique characteristics would a person who is 'double-jointed' possess?
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Briefly describe the functions of synovial fluid.
Briefly describe the functions of synovial fluid.
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Briefly describe what is happening when a person 'cracks their knuckles'.
Briefly describe what is happening when a person 'cracks their knuckles'.
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Which statement describes the fibular and tibial collateral ligaments? Select all that apply.
Which statement describes the fibular and tibial collateral ligaments? Select all that apply.
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Which statement describes the function of a meniscus?
Which statement describes the function of a meniscus?
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Gliding occurs between?
Gliding occurs between?
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Study Notes
Structural Categories of Joints
- Three structural types: fibrous joints, cartilaginous joints, synovial joints.
- Classification criteria: presence/absence of synovial cavity and type of connective tissue binding the bones.
Joints Lacking a Joint Cavity
- Fibrous joints lack a joint cavity and are held together by fibrous connective tissue.
Joints Without a Synovial Cavity
- Both fibrous joints and cartilaginous joints lack a synovial cavity.
Functional Classifications of Joints
- Three functional categories based on movement:
- Synarthroses: immovable joints.
- Amphiarthroses: slightly movable joints.
- Diarthroses: freely movable joints.
Movement Allowance in Functional Classes
- Amphiarthrosis and diarthrosis classes allow joint movement.
Suture Classification
- A suture is structurally classified as fibrous in adults.
- Functionally classified as synarthrosis in adults.
Epiphyseal Plate Classification
- The epiphyseal plate in growing long bones is classified as a synchondrosis.
Characteristics of Synovial Joints
- All synovial joints contain a joint cavity, are freely movable, and articulating bones are covered with hyaline cartilage.
"Double-Jointed" Characteristics
- "Double-jointed" individuals have increased flexibility in articular capsules and ligaments, leading to greater range of motion but less joint stability.
Functions of Synovial Fluid
- Reduces friction, absorbs shock, supplies oxygen and nutrients, and removes carbon dioxide and metabolic wastes from articular cartilage chondrocytes.
Knuckle Cracking Mechanism
- Cracking knuckles involves expansion of the synovial cavity, decreasing pressure to form and burst gas bubbles in the fluid, creating the characteristic popping sound.
Fibular and Tibial Collateral Ligaments
- Composed of dense regular connective tissue and are extracapsular ligaments, associated with the knee joint, providing stability to the joint.
Function of a Meniscus
- Located in the knee, composed of fibrocartilage, it helps absorb shock and distribute weight effectively in the joint.
Gliding Joint Movements
- Gliding occurs between flat bones or slightly curved bones, allowing for slight movement in multiple directions.
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Description
Test your knowledge of the structural types of joints with these flashcards from Anatomy Chapter 9. Learn about the three categories of joints, the criteria for their classification, and how they differ in structure. A great way to reinforce your understanding of joint anatomy!
