Which statement(s)about ribs is correct?
A)ribs prevent collapse of the lungs and help make negative pressure breathing possible.
B)fishes have a pair of ribs for every vertebra.
C)leopard frogs lack ribs altogether.
D)most humans have 12 pairs of ribs but about one-in-twenty has a thirteenth pair.
E)all of the choices are correct.

Question

Quizplus · Accepted Answer

All statements are correct. Ribs play a crucial role in the respiratory system by preventing lung collapse and facilitating negative pressure breathing. Fish typically have a pair of ribs for each vertebra, aligning with their skeletal structure. Leopard frogs indeed lack ribs, which is an adaptation seen in some amphibian species. Lastly, while most humans have 12 pairs of ribs, a small percentage have a thirteenth pair, which is a variation within the human population.

Which Statement(s)about Ribs Is Correct