| Joint Type Movement | Elbow Hinge Flexion, extension | Knee Hinge Flexion, extension | Hip Ball and socket Flexion, extension, abduction, adduction, rotation, circumduction | Shoulder Ball and socket Flexion, extension, abduction, adduction, rotation, circumduction |
|---|
What type of synovial joint is extension?
Plane joints are flat and have slipping and gliding properties. Hinge joints are formed between the cylindrical end of a bone and the trough-shaped surface of another bone, allowing flexion and extension in one plane.
What type of movement is extension?
Extension refers to a movement that increases the angle between two body parts . Extension at the elbow is increasing the angle between the ulna and the humerus. Extension of the knee straightens the lower limb. Fig 1 – Flexion and extension.
What are the 6 major features of synovial joints?
- synovial joints. articulating bones are separated by a fluid-filled joint cavity. ...
- All bone ends (epiphyseas) have articular cartilage. absorbs compression, keeps bone ends from crushing each other.
- Joint cavity. ...
- Articular cartilage. ...
- Synovial fluid. ...
- Reinforcing ligaments. ...
- Lots of nerves and blood vessels.
What are the 6 distinguishing features of synovial joints?
- Distinguishing Features of Synovial Joints. articular cartilage; synovial cavity; articular capsule; synovial fluid; reinfrcing ligaments; rich nerve and blood vessel supply.
- Articular Capsule. ...
- Synovial Fluid. ...
- Capsular Ligaments. ...
- Extracapsular Ligaments. ...
- Intracapsular Ligaments. ...
- Bursae. ...
- Tendon Sheath.
What is an example of extension?
Extension is the opposite of flexion, describing a straightening movement that increases the angle between body parts. For example, when standing up, the knees are extended . ... Extension of the hip or shoulder moves the arm or leg backward.
What is flexion vs extension?
Flexion – bending a joint . This occurs when the angle of a joint decreases. For example, the elbow flexes when performing a biceps curl. The knee flexes in preparation for kicking a ball. Extension – straightening a joint.
What is the difference between flexion and extension class 12?
Flexion: The angle between the two joins decreases during the flexion. Extension: The angle between the two joints increases during the extension. Flexion: Flexion leads to the bending of the bones, bringing the two bones together. Extension: Extension leads to the straightening of the bones, dispersing the two bones.
What are the main features of synovial joints?
The three main features of a synovial joint are: (i) articular capsule , (ii) articular cartilage, (iii) synovial fluid.
What are the four features of a synovial joint?
Synovial joints comprise most of the joints of the extremities and are the most accessible joints to direct inspection and palpation. Synovial joints share important structural components: subchondral bone, hyaline cartilage, a joint cavity, synovial lining, articular capsule, and supporting ligaments .
What are the functions of a synovial joint?
Synovial joints (freely movable joints) allow us the free movement to perform skills and techniques during physical activity . Synovial joints have synovial fluid in the joint cavity that lubricates or ‘oils’ the joint so it moves smoothly. Synovial fluid is made by the synovial membrane.
What are the 6 types of synovial joints in the human body?
Synovial joints are often further classified by the type of movements they permit. There are six such classifications: hinge (elbow), saddle (carpometacarpal joint), planar (acromioclavicular joint), pivot (atlantoaxial joint), condyloid (metacarpophalangeal joint), and ball and socket (hip joint) .
What is a Diarthrosis joint?
Medical Definition of diarthrosis
1 : articulation that permits free movement . 2 : a freely movable joint. — called also synovial joint.
Is the hip a synovial joint?
The hip joint (see the image below) is a ball-and-socket synovial joint : the ball is the femoral head, and the socket is the acetabulum. The hip joint is the articulation of the pelvis with the femur, which connects the axial skeleton with the lower extremity.
What is the difference between hyperextension and extension?
Figure 1.
(c)–(d) Anterior bending of the head or vertebral column is flexion , while any posterior-going movement is extension. Hyperextension is the abnormal or excessive extension of a joint beyond its normal range of motion, thus resulting in injury. Similarly, hyperflexion is excessive flexion at a joint.
What do you mean extension?
an act or instance of extending, lengthening , stretching out, or enlarging the scope of something. the state of being extended, lengthened, or stretched out. that by which something is extended or enlarged; an addition: a four-room extension to a house.
