CECPI Universty-Newco ×Ed Assignments, 201802 E Certo.mheducation.com/hm.tpx x y

Question

CECPI Universty-Newco ×Ed Assignments, 201802 E Certo.mheducation.com/hm.tpx x y [] unit 3 assgnment 1 Complete the sentences that descrbe the viarious typas of synovial joints Synovial joints can be classihed based on tha shape of the bone ends that make up the joints For example, a condylar hinge joint consists of two flat for nearly flat) bone ends that can slide over each other symptysis plane Joints classified as … joints have one cyindrical bone end that articulates with a ring made up o anather hore and a ligament pwot suture and-socket sadle Joints consisting of the head of one bone fitting into a cup- shaped depression on the other bona are called it one bone end witin a joint is convex and the othar is concave, the loat 15 caled a " bone ends each have convex and concave regions, the joint oin IH bath pint. oin w5th ene wal-shaped rounded bone end that antiulates with an eiptical cavity on another bone end are Reset

Explanation / Answer

1. Synovial joints can be classified based on the shape of the bone ends that make up the joints.For example, a plane joint consists of two flat or nearly flat bone ends that can slide over one another. These joints allow only gliding or sliding movements, are multi-axial such as the articulation between vertebrae. E.g: carpals of the wrist.

2. Joints classified as Pivot joints have one cylindrical end articulates with a ring made up of another bone and ligament. One bone rotates about another. E.g: proximal radio-ulnar joint, and distal radio-ulnar joint

3. Joints consisting of the head of one bone fitting into a cup-shaped depression on the other bone are called Ball and Socket joints. These allow for all movements except gliding. E.g: shoulder and hip joints .

4. If one bone end within a joint is convex and the other is concave the joint is called a Hinge joint. If both bone ends each have convex and concave regions the joint is a Saddle joint. The two surfaces are reciprocally concavoconvex in shape, which resemble a saddle, permit the same movements as the condyloid joints but allow greater movement. E.g: Sternoclavicular joint.

Hinge joints allow flexion and extension in just one plane. E.g elbow

5. Joints with one oval-shaped rounded bone end that articulates with an elliptical cavity on another bone end are classified as Condylar joints.This is a modified ball and socket joint that allow primary movement within two perpendicular axes, passive or secondary movement may occur on a third axes. E.g: wrist joint.

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