what are called joints ?explain the types of joints with example?
Answers
Answer:
Joints are the areas where 2 or more bones meet. Most joints are mobile, allowing the bones to move. Joints consist of the following: Cartilage. This is a type of tissue that covers the surface of a bone at a joint.
There are three types of joints in the functional classification: immovable, partly movable, and movable joints. Movable joints can be classified further according to the type of movement they allow. There are six classes of movable joints: pivot, hinge, saddle, plane, condyloid, and ball-and-socket joints.
Answer:
Joints are the areas where 2 or more bones meet. Most joints are mobile, allowing the bones to move. Joints consist of the following: Cartilage. This is a type of tissue that covers the surface of a bone at a joint.
Types of freely movable joints
There are six types of freely movable diarthrosis (synovial) joints:
1. Ball and socket joint. Permitting movement in all directions, the ball and socket joint features the rounded head of one bone sitting in the cup of another bone. Examples include your shoulder joint and your hip joint.
2. Hinge joint. The hinge joint is like a door, opening and closing in one direction, along one plane. Examples include your elbow joint and your knee joint.
3. Condyloid joint. The condyloid joint allows movement, but no rotation. Examples include your finger joints and your jaw.
4. Pivot joint. The pivot joint, also called the rotary joint or trochoid joint, is characterized by one bone that can swivel in a ring formed from a second bone. Examples are the joints between your ulna and radius bones that rotate your forearm, and the joint between the first and second vertebrae in your neck.
5. Gliding joint. The gliding joint is also called the plane join. Although it only permits limited movement, it’s characterized by smooth surfaces that can slip over one another. An example is the joint in your wrist.
6. Saddle joint. Although the saddle joint does not allow rotation, it does enable movement back and forth and side to side. An example is the joint at the base of your thumb.
Explanation:
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