Join thousands of students who trust us to help them ace their exams!Watch the first video
Multiple Choice
Which of the following is an example of a ball-and-socket joint?
A
Ankle joint
B
Elbow joint
C
Knee joint
D
Shoulder joint
Verified step by step guidance
1
Step 1: Understand the concept of a ball-and-socket joint. A ball-and-socket joint is a type of synovial joint where a spherical head of one bone fits into a cup-like socket of another bone, allowing movement in multiple directions, including rotation.
Step 2: Review the anatomy of the shoulder joint. The shoulder joint, also known as the glenohumeral joint, consists of the head of the humerus (the ball) fitting into the glenoid cavity of the scapula (the socket). This structure allows for a wide range of motion, including flexion, extension, abduction, adduction, rotation, and circumduction.
Step 3: Compare the shoulder joint to other joints listed in the problem. The ankle, elbow, and knee joints are not ball-and-socket joints. For example, the knee joint is a hinge joint, allowing movement primarily in one plane (flexion and extension).
Step 4: Confirm that the shoulder joint fits the definition of a ball-and-socket joint based on its structure and function, making it the correct answer.
Step 5: Conclude that the shoulder joint is the correct example of a ball-and-socket joint, as it provides the characteristic multidirectional movement and rotation.