In the circulatory system, alternative routes of blood supply created by connections between blood vessels are called what?

• A. Varicosities
• B. Anastomoses
• C. Thrombi
• D. Aneurysms

Answer: (B)

Verified step by step guidance

1. Understand the question is asking for the term that describes alternative routes of blood supply created by connections between blood vessels.
2. Recall that in the circulatory system, when two or more blood vessels connect to provide multiple pathways for blood flow, these connections are called 'anastomoses'.
3. Recognize that 'varicosities' refer to swollen, twisted veins, not alternative routes of blood supply.
4. Know that 'thrombi' are blood clots formed inside blood vessels, which can obstruct blood flow rather than create alternative routes.
5. Understand that 'aneurysms' are localized dilations or bulges in blood vessel walls, not connections between vessels.