Inspiration is the time during which ________
A) air passes out of the lungs
B) air is taken into the lungs
C) air passes from the alveoli into the conducting passageways
D) air is taken into the nasal passageways
Answer: B
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An arterial blood pH above 7.45 is called ________.
Fill in the blank(s) with the appropriate word(s).
During a muscle action potential, calcium is released into the sarcoplasm, near the actin and myosin molecules. Which of the following is the best explanation of what the calcium does?
A) The calcium binds to the actin and myosin and makes them work together. B) The calcium breaks apart ATP to ADP and P. C) The calcium removes the tropomyosin block. D) The calcium causes the release of acetylcholine.
Which process of respiration relies on partial pressure gradients to move air in and out of the lungs?
A) both pulmonary gas exchange and tissue gas exchange B) gas transport C) pulmonary ventilation D) both gas transport and pulmonary ventilation
Urine moves down the ureters into the urinary bladder due to gravitational pull alone
Indicate whether the statement is true or false