Which of the following describes the epidermis?
A. Protects the skin against mechanical injury
B. Keeps out harmful chemicals and pathogens
C. Retains water in deeper skin layers
D. All of the answer choices are correct
Answer: D
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The hormone ANP
A. increases urine output and decreases blood volume. B. increases urine output and increases blood volume. C. decreases urine output and increases blood volume. D. decreases urine output and decreases blood volume.
More sound volume is perceived when
A. sound wave amplitude decreases. B. sound wave amplitude increases. C. sound wave frequency increases. D. action potentials from hair cells are blocked. E. sound wave frequency decreases.
Which of the following is not an effect of aging on the muscular system?
A) hypertrophy B) smaller muscle fibers C) decreased recovery from muscle injuries D) exercise tolerance decreases E) muscles become less elastic
Which of the following statements is correct?
A) Small mammals are more constrained by evolutionary history than large mammals. B) In vertebrates, connective tissue and bones are the most important elastic energy stores. C) Collagen of small mammals has very different properties than collagen of large mammals. D) Smaller animals store more elastic energy during movement than larger animals.