Out of 'X' pairs of ribs in humans only 'Y' pairs are true ribs. Select the option that correctly represents values of X and Y: - Biology MCQ NEET (UG) 2017 2026 | ExamTest.live | ExamTest.live

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Out of 'X' pairs of ribs in humans only 'Y' pairs are true ribs. Select the option that correctly represents values of X and Y:

A $X = 12, Y = 5$
B $X = 24, Y = 7$
C $X = 24, Y = 12$
D $X = 12, Y = 7$

Solution & Step-by-step Explanation

Humans have 12 pairs (X = 12) of ribs. The first 7 pairs (Y = 7) are "true ribs" because they are attached dorsally to the thoracic vertebrae and ventrally to the sternum.

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Out of 'X' pairs of ribs in humans only 'Y' pairs are true ribs. Select the option that correctly represents values of X and Y:

A

X = 12, Y = 5

B

X = 24, Y = 7

C

X = 24, Y = 12

D

X = 12, Y = 7

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Locomotion and Movement Skeletal System Ribs

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