Peripheral chemoreceptors are most sensitive to:
A) partial pressure of carbon dioxide (PCO2 ) in the blood.
B) concentration of hydrogen ions in the blood.
C) partial pressure of oxygen (PO2 ) in arterial blood.
D) concentration of hydrogen ions in cerebrospinal fluid.
Answer: C
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Located throughout the layers of the muscularis externa are pacemaker cells known as the ______
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The ________ body plane of section divides the body into superior and inferior parts
A) oblique B) transverse C) sagittal D) frontal
Sully is involved in a car accident in which he is rear-ended. The traumatic hyperextension of his head caused
A. whiplash. B. a fracture. C. scoliosis. D. a herniated disc. E. spina bifida.
The cell generates more energy in ____________________ than in ____________________ conditions
Fill in the blank(s) with correct word