External respiration involves the
A) movement of air into and out of the lungs.
B) diffusion of gases between the alveoli and the circulating blood.
C) exchange of dissolved gases between the blood and the interstitial fluid.
D) binding of oxygen by hemoglobin.
E) utilization of oxygen by tissues to support metabolism.
Answer: B
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In the case of severe blood loss, additional sites in which red blood cells can be formed arise because ________ can change into red bone marrow.
Fill in the blank(s) with the appropriate word(s).
The slightly lower pH of venous blood compared to arterial blood is caused by:
a. the lower oxygen level of venous blood b. the influx of lactic acid in venous blood c. the influx of carbon dioxide in venous blood d. all of the above
What is the letter associated with the dark bands in a sarcomere?
A. I B. Z C. M D. A E. H
Retrograde amnesia associated with a traumatic head injury can be directly related to the loss of memories considered as both short-term and long-term, including any events immediately related to the trauma
Indicate whether the statement is true or false.