Questions and Answers
What is a characteristic that applies to all joints of the body?
Diarthrotic joints are?
freely movable
Synarthrotic joints are?
immovable
Amphiarthrotic joints are?
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Some joints involve bone ends that are held together by collagen fibers. These joints are classified as ______ joints.
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Joints that can be tightly connected, allowing no movement are called ______ joints.
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Joints that have bone ends held together by hyaline cartilage or fibrocartilage are classified as ________ joints.
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Joints held together by a joint capsule are called ______ joints.
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What class of joint consists of bone ends held together by collagenous tissue?
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A fibrous joint between bones of the skull is called a _______.
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The joint between the distal end of the tibia and fibula is called a ________.
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The joint that anchors a tooth in its socket involves the fibrous periodontal ligament. This joint is a ______.
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Joints where the bone ends are bound together by hyaline cartilage or fibrocartilage are classified as?
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A synovial joint is surrounded by a two-layer _____ which encloses a fluid-filled space called the _________.
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The outer layer of the joint capsule consists of _____ which is continuous with the periosteum of each bone.
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The outer layer may be reinforced by______ which are bundles of collagenous fibers.
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Structures outside the joint capsule are called _____ by definition.
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The inner layer of the joint capsule is the _____, consisting of _____ .
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The inner lining of the joint capsule secretes a fluid called ____. This fluid is viscous and lubricates the surfaces within the joint capsule.
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Fibrocartilage discs within a joint are called?
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What are fluid-filled sacs in joints called?
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The lining of the joint cavity that secretes fluid is called?
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What is the protective layer that covers bone ends called?
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What type of joint is associated with the presence of a joint capsule?
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A joint that consists of two flat bone ends that can slide over each other is called a ____________ joint.
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Joints classified as ____________ joints have one cylindrical bone end that articulates with a ring made up of another bone and a ligament.
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Joints consisting of the head of one bone fitting into a cup-shaped depression on the other bone are called ball-and-socket joints.
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Study Notes
Joint Characteristics
- All joints are connections between neighboring bones.
Types of Joints
- Diarthrotic joints: Freely movable joints, allowing a wide range of motion.
- Synarthrotic joints: Immovable joints, offering no movement.
- Amphiarthrotic joints: Slightly movable joints, providing limited movement.
Joint Classifications Based on Structure
-
Fibrous joints: Consist of bone ends held together by collagen fibers; can be classified as:
- Synarthrotic joints: Tightly connected with no movement.
- Amphiarthrotic joints: More loosely connected, allowing slight movement.
- Cartilaginous joints: Bone ends held together by hyaline cartilage or fibrocartilage; classified as amphiarthrotic or slightly movable joints.
- Synovial joints: Bone ends held together by a joint capsule; these joints are freely movable (diarthrotic).
Fibrous Joint Types
- Suture: A fibrous joint between bones of the skull.
- Syndesmosis: Joint occurring between the distal end of the tibia and fibula, connected by a band of collagen.
- Gomphosis: Joint that anchors a tooth in its socket via the fibrous periodontal ligament.
Cartilaginous Joints
- Characterized by bone ends bound together by hyaline or fibrocartilage.
Synovial Joint Structure
- Surrounded by a two-layer joint capsule enclosing a synovial cavity filled with synovial fluid.
- Outer layer: Made of dense connective tissue, continuous with the periosteum, may include ligaments for reinforcement.
- Accessory structures: Include ligaments located outside the capsule.
- Inner layer: Synovial membrane, consisting of loose connective tissue, secretes synovial fluid that lubricates the joint.
Special Features of Synovial Joints
- Menisci: Fibrocartilage discs within the joint, aiding in shock absorption and stability.
- Bursae: Fluid-filled sacs that cushion and reduce friction in the joint.
- Articular cartilage: Protective layer covering the ends of bones within the joint.
Joint Capsule Presence
- Joint capsules are associated exclusively with synovial joints.
Synovial Joint Classifications
- Plane joints: Consist of two flat bone ends allowing gliding movements.
- Pivot joints: Feature one cylindrical bone end that rotates within a ring formed by another bone and a ligament.
- Ball-and-socket joints: Characterized by the head of one bone fitting into a cup-shaped depression of another bone, allowing for a wide range of motion.
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Description
Test your understanding of joint classifications with these flashcards from Chapter 8. This quiz covers the types of joints including diarthrotic, synarthrotic, and amphiarthrotic joints. Perfect for a final review of anatomical joints!
