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Joints
| Question | Answer |
|---|---|
| Name and briefly describe the functional types of joints | Synarthroses; immovable joints Amphiarthroses; slightly movable joints Diarthroses; freely movable joints |
| Name the three types of joints based on a structural classification: | Fibrous joints Cartilaginous joints Synovial joints |
| Describe a fibrous joint, and identify its three types. | Sutures Syndesmoses Interosseous membrane |
| Name the two types of cartilaginous joints, and give an example of each: | Synchondrosis: epiphyseal plate Symphysis: intervertebral disks |
| Identify the two layers that make up the articular capsule of a synovial joint: | Outermost fibrous membrane of dense irregular connective tissue An inner synovial membrane of areolar connective tissue |
| What is articular cartilage? | Articular cartilage is the hyaline cartilage that covers the articulating surfaces of the bones in a synovial joint. |
| What are articular disks? What is their function? | Articular disks (menisci) are pads of fibrocartilage found in some synovial joints. They function to stabilize the joint. |
| Gliding | Movement of one surface over another without angular or rotational movement |
| Flexion | Usually involves a decrease in the angle between the anterior surfaces of articulating bones |
| Extension | Usually involves an increase in the angle between the anterior surfaces of articulating bones |
| Rotation | Movement of a bone around its longitudinal axis, Dorsiflexion → Flexion of the foot at the ankle |
| Cartilaginous | one way a joint can be classified structurally. |
| A synovial joint is defined as a joint with: | A joint cavity, and the bones forming the joint are united by an articular capsule. |
| Synarthrosis | An immovable joint |
| A fibrous joint in which the fibrous tissue forms an interosseous membrane or ligament that permits some flexibility and movement would be classified as a: | Syndesmosis joint |
| Which subtype of synovial joint is found at the following locations—between the carpals, and between the clavicle and the sternum? | Planar |
| Which subtype of synovial joint is found in the knee, elbow, and ankle? | Hinge |
| Which subtype of synovial joint is described as a rounded or pointed surface of one bone articulating within a ring? | Pivot |
| The joint between the trapezium carpal bone and the metacarpal of the thumb is a | Saddle joint |
| A combination of flexion-extension and abduction-adduction in succession that causes a body part to move in a circle is known as | Circumduction |
| Bending the foot in the direction of the sole is known as: | Plantar flexion |
Created by:
nickseaman
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