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Choose the incorrect statement from the ...

Choose the incorrect statement from the following :
a . 12 pairs of ribs are present .
b. Ribs dorsally articulate with sternum and ventrally with the vertebral column .
c . Ribs are not bicephalic
d. Ribs are attached with sternum with the help of hyaline cartilage.

A

a and b

B

b and c

C

a and c

D

c and d

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze each of the statements provided and determine which one is incorrect. 1. **Statement A**: "12 pairs of ribs are present." - In humans, there are indeed 12 pairs of ribs. The first seven pairs are known as true ribs, and the remaining five pairs are classified as false ribs. Therefore, this statement is **correct**. 2. **Statement B**: "Ribs dorsally articulate with sternum and ventrally with the vertebral column." - This statement is incorrect. Ribs articulate dorsally with the vertebral column (the thoracic vertebrae) and ventrally with the sternum. Hence, the articulation described in this statement is reversed. Therefore, this statement is **incorrect**. 3. **Statement C**: "Ribs are not bicephalic." - This statement is also incorrect. Ribs are bicephalic, meaning they have two articulation points: one for the vertebral column and one for the sternum. Therefore, this statement is **incorrect**. 4. **Statement D**: "Ribs are attached with sternum with the help of hyaline cartilage." - This statement is correct. The true ribs (first seven pairs) are connected to the sternum via costal cartilage, which is made of hyaline cartilage. Therefore, this statement is **correct**. Based on the analysis: - The incorrect statements are B and C. However, since the question asks for one incorrect statement, we can highlight that **Statement B is the most clearly incorrect**. ### Final Answer: The incorrect statement is **B**: "Ribs dorsally articulate with sternum and ventrally with the vertebral column."
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