- 1 is pivot joint
- 2 is hin=ge joint
- 3 is ball and socket joint
- 4 is hin=ge joint
The main joint in the neck is the atlantoaxial joint, which is a pivot joint. This joint allows for the rotation of the head independently of the body.
The elbow joint is a hin=ge joint, allowing movement in only one plane (uniaxial). It is the point of articulation of three bones: the humerus of the arm and the radius and the ulna of the forearm.
4 refers to the joint connecting the leg to the hip, which is a ball-and-socket joint. The joint connecting the leg to the hip is the hip joint. It is a b-and-socket joint, known anatomically as the coxofemoral joint. This type of joint allows for a wide range of motion, including flexion, extension, abduction, adduction, and rotation.
The joint connecting the leg to the foot, the ankle joint, is a hin=ge joint. The ankle joint allows primarily for dorsiflexion (lifting the foot towards the shin) and plantarflexion (pointing the foot downward). It is formed by the articulation of the tibia and fibula bones of the lower leg with the talus bone of the foot.