Most of the fixed acid in our body comes from
A. acid absorbed from the GI tract.
B. the oxygen we breathe.
C. lactic acid from muscle.
D. loss of bicarbonate in feces.
Answer: A
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Assuming that the right and left renal arteries arise separately, the fourth vessel to branch off the abdominal descending aorta is generally the right renal artery.
Answer the following statement true (T) or false (F)
Important organic osmolytes in marine osmoconformers are
a. polyols and sugars. b. glycine and taurine. c. methylamine and methylsulfonium. d. urea. e. all of these.
Movement of the elbow joint movement is limited to __________.
A. pronation and supination B. flexion and extension C. supination and flexion D. extension and pronation
Half of the fibers of each optic nerve decussate at the ________.
A. superior colliculus B. lateral geniculate nucleus of the thalamus C. midbrain D. optic chiasm E. optic foramen