Which situation do you predict to prompt the release of more erythropoietin into the blood: anemia or polycythemia? Explain
What will be an ideal response?
Any decline in the level of oxygen in the blood prompts the kidneys to release more erythropoietin into the blood. Erythropoietin targets the bone marrow to produce more red blood cells. Anemia is a decrease in the blood's ability to transport oxygen for any reason while polycythemia is an excessive or abnormal increase in the number of red blood cells. Therefore, anemia would prompt the release of more erythropoietin so that the blood could transport more oxygen. In fact, polycythemia would likely inhibit erythropoietin production by the kidneys.
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Indicate whether the statement is true or false
The muscular ridges on the interior of the atria are known as trabeculae carnae.
a. true b. false
A specific molecule binds to a membrane receptor. This molecule is called a _________.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements regarding the brain areas that direct emotion is not true?
A. The cerebral cortex is responsible for control over emotions. B. The hypothalamus is the site of the conscious feeling of emotion. C. The limbic system delivers information about emotion from the cerebral cortex to the hypothalamus. D. The hypothalamus integrates emotional behaviors. E. None of the choices are true.