|
How many pairs of ribs are present in human skeleton? |
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|
a) |
10 pair |
b) |
12 pair |
c) |
9 pair |
d) |
7 pair |
|
How many pairs of ribs are present in human skeleton? |
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|
a) |
10 pair |
b) |
12 pair |
c) |
9 pair |
d) |
7 pair |
(b)
12 pairs.
Most mammal have 7 cervical vertebrae. There are four exceptions as follows
2-toed sloth = 6 Cervical vertebrae
Manatee = 6 Cervical vertebrae
Anthear = 8 Cervical vertebrae
3-toed sloth = 9 Cervical vertebrae