Which is NOT considered to be a primary function of the respiratory system?
A) vocalization
B) gas exchange
C) regulation of pH balance
D) protection against pathogens
E) regulation of water balance
E) regulation of water balance
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You are a physiologist on a space flight to a distant planet. You discover intelligent humanoid aliens inhabiting the planet, and they willingly submit to your tests. You discover that the alien's kidney handles the sugar alcohol mannitol just like our kidneys handle inulin. You also test the alien for its renal handling of glucose. The data from that experiment are: Plasma level (constant over
24 hrs): 6 g/dL of mannitol and 2 g/dL of glucose; 24 hr. urine sample: volume of 2 L, containing 144 g mannitol and 52 g glucose. A. What is the alien's glomerular filtration rate? B. What is the alien's clearance rate for glucose? C. How does the alien kidney handle glucose?
Adrenal androgens are normally secreted only in males, whereas adrenal estrogens are secreted only in females
Indicate whether the statement is true or false
Two opposing mechanisms determine alveolar expansion: ________ leads to alveolar expansion, while ________ opposes alveolar expansion.
A. positive pleural pressure; lung recoil B. negative pleural pressure; lung recoil C. lung recoil; negative pleural pressure D. lung recoil; positive pleural pressure
Where are the ganglia of the parasympathetic nervous system located?
A) near the cells or organ being innervated by parasympathetic postganglionic neurons B) close to the spinal cord C) near the parasympathetic preganglionic neuron D) close to the brain