Which structure is a ball and socket joint?
Ankle
Elbow
Knee
Shoulder
The Correct Answer is D
A ball and socket joint is a type of synovial joint where the rounded head of one bone fits into the concave socket of another bone, allowing movement in multiple directions. The shoulder joint is a classic example of a ball and socket joint, where the rounded head of the humerus bone fits into the shallow socket of the scapula bone, allowing for a wide range of movements such as flexion, extension, abduction, adduction, and rotation. The ankle joint is a hinge joint, the elbow joint is a hinge joint, and the knee joint is a complex hinge joint.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A hinge joint is a type of synovial joint that allows movement in only one plane, like a door hinge. The elbow joint is made up of the humerus bone in the upper arm, the ulna bone and the radius bone in the forearm. It allows flexion and extension movements, like the opening and closing of a hinge.
Correct Answer is B
Explanation
The urethra is a tube that connects the bladder to the external environment and serves as a passageway for urine to exit the body during urination. In males, the urethra also serves as a passageway for semen to exit the body during ejaculation, making it a part of both the male reproductive system and the urinary system.
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