Final answer:
Athero- refers to fatty plaque in arteries, anterior means toward the front of the body, and arthro- relates to joints and joint surgery, such as in arthroplasty.
Step-by-step explanation:
The terms athero, anteri, and arthro are prefixes used in medical terminology to describe different concepts. Athero- refers to fatty plaque and is used in terms like atherosclerosis, which is the buildup of fatty plaques in arteries. Anteri- is a variation of anterior, which describes something situated toward the front of the body, as in 'The toes are anterior to the foot'. Lastly, arthro- relates to joints, as seen in terms like arthroplasty, which is a surgical procedure to restore joint function by replacing a damaged joint with an artificial one.