Aging-related changes include shrinking of the prostate in men and enlargement of the
breasts in women.
Indicate whether the statement is true or false
FALSE
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The parasympathetic system is sometimes called "rest and _______."
Fill in the blank(s) with correct word
You have decided to ascend to the summit of Mount Everest where the partial pressure of oxygen in the atmosphere has been estimated to be about 54 mmHg. Once you breathe in this air, the partial pressure of oxygen in the alveoli drops even lower, due to displacement by the partial pressure of carbon dioxide and water vapor. The arterial concentration of oxygen at the pulmonary capillaries is measured and found to be 25 mmHg. What is the percent saturation of hemoglobin at this partial pressure?
A. 98% B. 83% C. 18 % D. 45%
Over time, diffusion results in the even distribution of a substance throughout an area.
Answer the following statement true (T) or false (F)
Which of the following organelles are found only in the small intestine?
a. Cilia. b. Flagella. c. Microvilli. d. Centrioles.