The axial skeleton includes:
The skull, the scapula, and the vertebral column
The skull, vertebral column, and pelvis
Pectoral girdle, pelvic girdle, and vertebral column
Arms, legs, hands, and feet
The skull, vertebral column, and rib cage
The Correct Answer is E
Choice A reason: The scapula is part of the appendicular skeleton, not the axial skeleton. Therefore, this combination is incorrect.
Choice B reason: The pelvis includes both axial and appendicular components, but the pelvic girdle is considered part of the appendicular skeleton. This makes the answer inaccurate.
Choice C reason: Both the pectoral and pelvic girdles are part of the appendicular skeleton. Including them in the axial skeleton is incorrect.
Choice D reason: Arms, legs, hands, and feet are all part of the appendicular skeleton. They are not included in the axial skeleton.
Choice E reason: This is the correct answer. The axial skeleton consists of the skull, vertebral column, and rib cage. These structures form the central axis of the body and protect vital organs such as the brain, spinal cord, and thoracic organs.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Microfilaments are components of the cytoskeleton found in many cell types, including muscle cells, but they are not the structural and functional unit of skeletal muscle.
Choice B reason: The sarcomere is the correct answer. It is the smallest contractile unit of skeletal muscle, composed of actin and myosin filaments arranged in a precise pattern. Sarcomeres are responsible for the striated appearance and contraction of skeletal muscle.
Choice C reason: The sarcoplasmic reticulum is an organelle that stores and releases calcium ions necessary for muscle contraction. While essential, it is not the structural and functional unit.
Choice D reason: Trabeculae are structural elements found in spongy bone, not muscle tissue. They do not play a role in muscle contraction.
Choice E reason: A fascicle is a bundle of muscle fibers, not the smallest functional unit. It is a larger structural grouping within the muscle
Correct Answer is B
Explanation
Choice A reason: Symphyses are cartilaginous joints where bones are joined by fibrocartilage. They allow limited movement, such as in the pubic symphysis, but are not the most movable joints.
Choice B reason: Synovial joints are the most movable type of joints in the body. They feature a joint cavity filled with synovial fluid, which reduces friction and allows for a wide range of motion. Examples include the shoulder, hip, and knee joints.
Choice C reason: Syndesmoses are fibrous joints where bones are connected by ligaments. They allow more movement than sutures but are still relatively limited compared to synovial joints.
Choice D reason: Gomphoses are immovable joints found between teeth and their sockets. These joints are highly stable but do not permit movement.
Choice E reason: Synchondroses are cartilaginous joints where bones are joined by hyaline cartilage. These joints are typically immovable or allow very slight movement, such as in the epiphyseal plates of growing bones.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.