Textbook Question
Label the structures in the following illustration of a synovial joint.
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8. Joints
Classification of Joints
1:32 minutesProblem 5
Textbook Question
Joints typically located between the ends of adjacent long bones are
(a) Synarthroses
(b) Amphiarthroses
(c) Diarthroses
(d) Symphyses
Verified step by step guidance1
Step 1: Understand the types of joints based on their mobility. Synarthroses are immovable joints, amphiarthroses are slightly movable joints, and diarthroses are freely movable joints.
Step 2: Recognize that long bones typically connect at joints that allow a wide range of motion, which are classified as diarthroses.
Step 3: Recall that symphyses are a type of cartilaginous joint (a subtype of amphiarthroses) where bones are joined by fibrocartilage, allowing limited movement, often found in the midline of the body.
Step 4: Identify that the ends of adjacent long bones, such as those in limbs, are connected by synovial joints, which are diarthroses, allowing free movement.
Step 5: Conclude that the correct classification for joints between the ends of adjacent long bones is diarthroses.
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Video duration:
1mKey Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Types of Joints
Joints are connections between bones that allow varying degrees of movement. They are classified based on their structure and function into synarthroses (immovable), amphiarthroses (slightly movable), and diarthroses (freely movable). Understanding these types helps identify joint locations and their mobility.
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Introduction to Joints
Long Bones and Their Anatomy
Long bones are characterized by a shaft and two ends (epiphyses). Joints located between the ends of adjacent long bones typically allow movement and are crucial for limb mobility. Recognizing the anatomy of long bones aids in associating joint types with their locations.
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6:19Overview of Long Bones
Symphyses as a Specific Joint Type
Symphyses are a type of cartilaginous joint where bones are joined by fibrocartilage, allowing limited movement. They are found in midline structures like the pubic symphysis, not typically between the ends of long bones. Differentiating symphyses from other joint types clarifies their anatomical placement.
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05:50Symphysis (Plural: Symphyses)
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