The principal functions of the ________ system include the absorption of oxygen, discharge of carbon dioxide, maintaining the acid-base balance, and speech.
Fill in the blank(s) with the appropriate word(s).
respiratory
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Your examination of a male patient reveals a tender subareolar mass in his breast. Which of the following conditions is most likely based on this finding?
A) gynecomastia B) Klinefelter's syndrome C) cancer D) shingles E) fibrous atrophy of his pectoralis major
What is the primary function of wave summation?
A) increase muscle tension B) prevent muscle relaxation C) prevent muscle fatigue D) produce smooth, continuous muscle contraction
In which of the following organs would you find fenestrated capillaries?
kidneys liver endocrine glands both A and C A, B, and C, are correct
Which mature cells do not have a nucleus?
A. Columnar cells of small intestines B. Columnar cells of upper respiratory tract C. Sperm cells D. Red blood cells E. Macrophages (large, mobile white blood cells)