Question:
Study the following and choose the correct statements:
I. In man, \(10^{\text{th}}\), \(11^{\text{th}}\) and \(12^{\text{th}}\) pairs of ribs are called floating ribs.
II. Number of carpals in human wrist are eight.
III. Saddle joint is present at the base of thumb in man.
IV. Accumulation of urea crystals in joints lead to gout.
Study the following and choose the correct statements:
I. In man, \(10^{\text{th}}\), \(11^{\text{th}}\) and \(12^{\text{th}}\) pairs of ribs are called floating ribs.
II. Number of carpals in human wrist are eight.
III. Saddle joint is present at the base of thumb in man.
IV. Accumulation of urea crystals in joints lead to gout.
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Floating ribs are the 11th and 12th pairs only. Gout results from deposition of uric acid crystals, not urea crystals.
Updated On: Jun 12, 2026
- I, II
- II, III
- III, IV
- I, IV
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Concept:
The human skeletal system contains various bones and joints that facilitate support and movement. Certain disorders are also associated with abnormal deposition of metabolic products in joints.
Step 1: Examine Statement I. In humans, there are 12 pairs of ribs.
• First 7 pairs are true ribs.
• 8th, 9th and 10th pairs are false ribs.
• 11th and 12th pairs are floating ribs. The 10th rib is not a floating rib. Therefore Statement I is incorrect.
Step 2: Examine Statement II. The wrist region contains eight carpal bones arranged in two rows. These carpals provide flexibility and strength to the wrist joint. Therefore Statement II is correct.
Step 3: Examine Statement III. The carpometacarpal joint of the thumb is a saddle joint. This joint allows movements in multiple planes and is responsible for the opposable nature of the thumb. Therefore Statement III is correct.
Step 4: Examine Statement IV. Gout occurs due to deposition of uric acid crystals in joints. The statement mentions urea crystals, which is incorrect. Therefore Statement IV is incorrect.
Step 5: Final conclusion. The correct statements are: \[ II \text{ and } III \] Hence option (B) is correct.
Step 1: Examine Statement I. In humans, there are 12 pairs of ribs.
• First 7 pairs are true ribs.
• 8th, 9th and 10th pairs are false ribs.
• 11th and 12th pairs are floating ribs. The 10th rib is not a floating rib. Therefore Statement I is incorrect.
Step 2: Examine Statement II. The wrist region contains eight carpal bones arranged in two rows. These carpals provide flexibility and strength to the wrist joint. Therefore Statement II is correct.
Step 3: Examine Statement III. The carpometacarpal joint of the thumb is a saddle joint. This joint allows movements in multiple planes and is responsible for the opposable nature of the thumb. Therefore Statement III is correct.
Step 4: Examine Statement IV. Gout occurs due to deposition of uric acid crystals in joints. The statement mentions urea crystals, which is incorrect. Therefore Statement IV is incorrect.
Step 5: Final conclusion. The correct statements are: \[ II \text{ and } III \] Hence option (B) is correct.
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