The kidneys can help maintain a blood pH which is approaching the alkaline end of its range by excreting ________ ions
A) bicarbonate
B) oxygen
C) ammonia
D) hydrogen
A
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Which of the following is an accessory organ of digestion?
A) pancreas B) colon C) esophagus D) spleen E) stomach
Someone suffering from a lack of angiotensin-converting enzyme may have a problem with their
A) endothelial cells of the alveolar capillaries. B) septal cells of the alveolar ducts. C) squamous epithelial cells of the alveoli. D) alveolar macrophages within the alveolar sacs. E) type II pneumocytes lining the respiratory bronchioles.
Which of the following signal molecules is involved in the costimulation of CD8 Lymphocyte activation?
a. gama aminobutytic acid b. histamine c. IL 2 d. Thyroid hormone
The length of the resting sarcomere is
A. longer than the length of a contracted sarcomere. B. shorter than the length of a contracted sarcomere. C. the same length as a contracted sarcomere. D. the same length as the muscle fiber. E. the same length as the myofibril.