Understanding Plane Joints

The video tutorial discusses plane joints, which consist of two flat surfaces that can glide or rotate. These joints are often found in groups, such as the carpals in the hand and tarsals in the foot. Ligaments hold these bones together, allowing some movement. The acromioclavicular joint, located between the clavicle and the acromion process of the scapula, adjusts its angle when the shoulder is elevated to maintain the scapula's vertical position.

What is the basic structure of a plane joint?

• A pivot point

• Two flat surfaces that can glide or rotate

• A ball and socket configuration

• A hinge mechanism

Which of the following is an example of a plane joint?

• Carpals of the hand

• Knee joint

• Elbow joint

• Hip joint

What holds the bones together in a plane joint?

• Muscles

• Ligaments

• Cartilage

• Tendons

Where is the acromioclavicular joint located?

• Between the radius and the ulna

• Between the clavicle and the acromion process of the scapula

• Between the humerus and the scapula

• Between the femur and the tibia

What happens to the acromioclavicular joint when the shoulder is elevated?

• It dislocates

• It rotates externally

• The angle adjusts to keep the scapula vertical

• It remains fixed