Why do males typically have lower voices than do females?
What will be an ideal response?
The pitch of the sound produced by the larynx depends upon the length, diameter, and amount of tension in the vocal folds. The diameter and length of the vocal folds are directly related to the size of the larynx, and the larger the larynx, the larger the vocal folds, and therefore, the lower the pitch of the voice. As males typically have larger larynxes than do females, they also have lower pitched voices.
You might also like to view...
Which of the following is not a characteristic of AIDS?
A) has killed at least 1/2 million people in the United States B) is spread most often through sexual contact C) attacks the T helper (CD4 ) cells D) is declining worldwide E) almost always eventually fatal
Manufacturers of some medications used to treat heartburn advertise that their products shut down the acid-producing pumps in the stomach. Where are these "acid-producing pumps"? In other words, which type of gastric gland cell secretes acid?
A. Chief cells B. Parietal cells C. Mucous neck cells D. Surface mucous cells E. Enteroendocrine cells
Inadequate release of a hormone is called ________.
Fill in the blank(s) with the appropriate word(s).
Calcium plays an essential role in all of the following except ________.
A. DNA synthesis B. exocytosis C. muscle contraction D. blood clotting E. communication among neurons