QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
Why are some ribs called floating ribs?
A. Because they are independent of other bones
B. Because they attach only with the sternum
C. Because they lie above the other ribs
D. Because they are attached only on the posterior side
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Answer
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Step 1:I'll solve this anatomy problem step by step:
Step 2:: Understanding Rib Anatomy
Ribs are curved bones that form the ribcage and protect vital organs like the heart and lungs. There are different types of ribs based on how they connect to the sternum (breastbone).
Step 3:: Classifying Ribs
Ribs are classified into three main types: - True ribs (directly attach to the sternum) - False ribs (attach indirectly to the sternum via cartilage) - Floating ribs (do not attach to the sternum at all)
Step 4:: Defining Floating Ribs
Floating ribs are the last two pairs of ribs (11th and 12th pairs) that: - Attach only to the spine (posterior side) - Do NOT connect to the sternum or other ribs via cartilage - "Float" freely in the anterior part of the body
Step 5:: Analyzing the Answer Choices
A. Incorrect - They are not independent of other bones B. Incorrect - They do NOT attach to the sternum C. Incorrect - Location is not the defining characteristic D. Correct - They are attached ONLY on the posterior side (to the spine)
Final Answer
Floating ribs are called "floating" because they are attached only on the posterior side (to the spine) and do not connect to the sternum.
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