Blood pH and cerebrospinal fluid pH are affected by carbon dioxide content. This enables the organism to sense a disturbance in gas levels as O the medulla oblongata monitors pH and uses this measure to control breathing O the brain alters the pH of the cerebrospinal fluid to force the animal to retain more or less carbon dioxide O the lungs sense changes in oxygen concentration, which causes the medulla oblongata to speed up or slow breathing the medulla oblongata directly monitors blood oxygen levels and causes breathing changes accordingly O the brain directly measures and monitors carbon dioxide and causes breathing changes accordingly

According to the Source Filter Theory of vowel production, during sustained phonation changing the shape of the vocal tract will change the frequencies of the harmonics.      True or false

1. Is this statement correct or incorrect? Explain.  During strenuous exercise, the oxygen-hemoglobin dissociation curve shifts to the right. This rightward shift reflects an increase in the affinity of hemoglobin for oxygen and favors loading of O2 onto hemoglobin in the lungs. 2. Is this statement correct or incorrect? Explain.  Compared to hemoglobin, myoglobin has a lower binding affinity for O2 and a higher O2 binding capacity, two characteristics that allow myoglobin to efficiently provide skeletal muscle cells with a readily-accessible reservoir of O2.

How does the human body detect changes in blood pressure?  Group of answer choices osmoreceptors ionreceptors baroreceptors chemoreceptors   Which of the following could be the pH of a healthy individual?  Group of answer choices 6.43 6.92 7.38 7.65