Human Anatomy and Physiology : Identifying Joints of the Extremities
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Example Questions
Example Question #41 : Joints
Which of the following articulates with the radial head of the radius?
Radial tuberosity
Coronoid process
Ulnar notch
Radial notch
Trochlear notch
Radial notch
Radial head articulates with the radial notch. The head of the ulna articulates with the ulnar notch. The trochlear notch articulates with trochlea of the humerus. The radial tuberosity is the attachment site for the long head of the biceps.
Example Question #42 : Joints
The zona orbicularis is found in which joint?
Sternoclavicular joint
Acetabulofemoral joint
Glenohumeral joint
Tibiofemoral joint
Acetabulofemoral joint
The zona orbicularis is a portion of the joint capsule of the acetabulofemoral (hip) joint. It is thought to resist distraction (pulling out) of the femur. Additionally, it is believed to help circulate synovial fluid in the joint. As you may recall, synovial fluid helps lubricate joints and provides nutrition to their articular cartilage.
Example Question #43 : Joints
What type of joint is the shoulder joint?
Fused
Ball
Saddle
Ball and socket
Hinge
Ball and socket
The shoulder, similar to the hip is formed by a ball-and-socket joint. The ball is created by the head of the humerus, while the socket is created by the glenoid cavity. This creates a smaller, less stable version of the ball-and-socket joint in the hip
Example Question #44 : Joints
The deep lateral rotators of the hip are sometimes called the rotator cuff of the hip. Despite this name, not all of the deep lateral rotators attach to the hip joint capsule, and not all the muscles that attach to the joint capsule laterally rotate the hip. Which muscles do not attach to the hip joint capsule?
Obturator externus
Gluteus minimus
Piriformis
Rectus femoris
Piriformis
The rectus femoris, specifically the reflected head, attaches to the anterosuperior portion of the hip capsule. The gluteus minimus attaches to the superolateral portion of the capsule. Although its contribution to the capsule is relatively small, the obturator externus attaches to the posteroinferior joint capsule. Despite contributing to dynamic hip stability by eccentrically controlling hip internal rotation, the piriformis does not attach to the hip's joint capsule.
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