Wilma is a 65-year-old woman who has chronic pulmonary disease, osteoporosis, and recently suffered a stroke. She relies on relatives and caretakers to help her on a daily basis, even with some of her most basic tasks. Which of the following best describes Wilma's functional age?

Which of the following is true of the mammalian nervous system?

A. It cannot repair itself following injury. B. It can somewhat repair itself following injury. C. It begins to degenerate with injury. D. It repairs itself completely following injury,

Sounds above 20,000 Hz are called ________.

A. hypersonic B. supersonic C. subsonic D. ultrasonic