Artikulasi (Persendian)

Summary

This video explains the three main types of joints in the human body: synarthrosis, amphiarthrosis, and diarthrosis. Synarthrosis, or immovable joints, includes examples like the ribs and sternum, while amphiarthrosis allows limited movement, seen in the connection between ribs and vertebrae. Diarthrosis, or freely movable joints, are characterized by a synovial fluid that lubricates movement, such as in the hips and shoulders. The video highlights various joint types, including ball-and-socket, hinge, pivot, and gliding joints, explaining their structures and movements with relatable examples.

Takeaways

• 😀 There are three main types of joints: synarthrosis, amphiarthrosis, and diarthrosis.
• 😀 Synarthrosis, also known as 'immovable joints,' allows no movement and is connected by fibrous or cartilaginous tissue.
• 😀 Examples of synarthrosis include synchondrosis (e.g., rib and sternum) and synfibrosis (e.g., sutures in the skull).
• 😀 Amphiarthrosis, or 'slightly movable joints,' permits limited movement, exemplified by the rib and vertebra connections.
• 😀 Diarthrosis, or 'freely movable joints,' allows extensive movement due to the presence of synovial fluid that lubricates the joint.
• 😀 Diarthrosis includes several types of joints, each enabling different types of movement.
• 😀 Ball-and-socket joints, such as the shoulder and hip joints, allow for multi-directional movement.
• 😀 Hinge joints, like the elbow and knee, operate like a door hinge, permitting movement in one direction.
• 😀 Pivot joints enable rotational movement around a single axis, as seen between the skull and the first vertebra.
• 😀 Glide joints allow bones to slide past each other, exemplified by the joints in the wrist and between vertebrae.

Q & A

What are the three main types of joints mentioned in the video?

The three main types of joints are synarthrosis, amphiarthrosis, and diarthrosis.

What is synarthrosis, and why is it called a 'dead joint'?

Synarthrosis refers to immovable joints that do not allow any movement. It is called a 'dead joint' because there is no motion permitted at the joint.

Can you give examples of synarthrosis types?

Yes, examples of synarthrosis include synchondrosis, which is a joint connected by cartilage (like the ribcage and sternum), and syndesmosis, which is connected by fibrous tissue (like the sutures in the skull).

What is the defining characteristic of amphiarthrosis joints?

Amphiarthrosis joints are slightly movable, allowing limited movement between the bones.

What is a key example of an amphiarthrosis joint?

A key example of an amphiarthrosis joint is the connection between the ribs and the vertebrae.

What distinguishes diarthrosis joints from the other types?

Diarthrosis joints, also known as freely movable joints, allow a wide range of motion and are characterized by the presence of synovial fluid, which lubricates the joint.

What are the different types of diarthrosis joints?

The different types of diarthrosis joints include ball-and-socket joints, hinge joints, pivot joints, and gliding joints.

Can you explain the ball-and-socket joint and give an example?

A ball-and-socket joint allows movement in multiple directions. An example is the shoulder or hip joint.

What is a hinge joint, and where can it be found?

A hinge joint allows movement in one direction, similar to a door hinge. Examples include the elbow and knee joints.

How does synovial fluid function in diarthrosis joints?

Synovial fluid functions as a lubricant in diarthrosis joints, reducing friction between the bones during movement and preventing wear and tear.