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All chordates, at some point in their life cycle, share four hallmark characteristics.  One of these characteristics is a postanal tail.  Write two more of these characteristics shared by all chordates in the two blanks provided.  [1] [2]

What traits evolved in Chondricthyes that allowed them to become agile mobile predators of larger prey?

  Select the correct choice  

The act of moving the vocal folds together is called _____________.

The nasal turbinates in the nasal cavity affect air in the following ways (select all that apply)

From the list below, indicate which are cartilages of the larynx:

During early infancy, the lower border of the velum is far away from the upper border of the epiglottis.

The cavity directly between the vocal folds is called the:

If fundamental frequency is 167 Hertz, that means the the vocal folds are vibrating 16.7 times per second.

If you measured nasal airflow in a typical speaker, what would you expect to find for the following speech samples? Check the appropriate answer.