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In the human skeleton, how many pairs of ribs are classified as false ribs?
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7. The Skeletal System
Introduction to the Skeleton
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How many total pairs of spinal nerves are there in the human body?
A
31 pairs
B
36 pairs
C
24 pairs
D
12 pairs
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Understand that spinal nerves are part of the peripheral nervous system and emerge from the spinal cord.
Recall that spinal nerves are categorized based on the region of the spine they emerge from: cervical, thoracic, lumbar, sacral, and coccygeal.
Identify the number of pairs of spinal nerves in each region: 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal.
Add the number of pairs from each region to find the total number of spinal nerve pairs: 8 + 12 + 5 + 5 + 1.
Verify that the total number of spinal nerve pairs is 31, which matches the correct answer option provided.
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