CPB Certified Professional Biller Certification Practice Exam

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What does the prefix 'acr-' refer to in medical terms?

Lower body
Center
Extremities, top
Inner organs

The correct answer is: Extremities, top

The prefix 'acr-' in medical terminology refers to extremities or the outermost parts of the body, particularly the limbs and the topmost parts, such as the head. This aligns with its derivation from the Greek word 'akron,' meaning 'highest' or 'tip.' Understanding the significance of this prefix is essential for interpreting medical terms related to conditions or procedures involving the limbs or upper extremities. For example, words like 'acromion' (the highest point of the shoulder) and 'acral' (pertaining to the extremities) illustrate how the prefix is applied within a medical context. The other choices do not correctly reflect this prefix's meaning. Terms related to the lower body or center do not incorporate 'acr-,' while 'inner organs' also does not align with the extremities represented by the prefix. Recognizing the specific meaning of 'acr-' can aid in better understanding various medical terms that involve extremities or related anatomical features.