Question

1. Answer the following in regards to the skeleton of the vertebrae; your response to each should be 1-3 sentences in length:

a) Giraffes have seven cervical vertebrae like all other mammals. How is the long neck possible?
b) The ear ossicles of the middle ear represent a mammalian characteristic. What are the homologues (and analogues) in other vertebrates?
c) How can fish survive without a sternum?
d) In a human, does the pectoral girdle truly juxtapose with the axial skeleton? Explain.
e) Justify locomotion without limbs.