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Christine Phillips

Physiology Final

QuestionAnswer
What is 4.0 on the pH scale? An Acid
What is 8.0 on the pH scale? A Base
What pH does your blood have? 7.35 to 7.45
What is the range of the pH scale? Acid 0 - 7 Neutral - 14 Basic.
What pH does urine have? 6 and the lowest it can be is 4.5
What does the Reticular Activating System do? The RAS consists of centers in the brainstem's reticular formation that receive impulses from the spinal cord and relay them to the thalamus and then to all parts of the cerebral cortex.
Conduction to automatic effectors requires at least 2 efferent neurons. True.
An increase in Hydrogen makes the body become more acidic or alkaline? Acidic
How long does pulmonary regulation take to bring the acidity levels of a person back to homeostasis? Rapid breathing can rid the body of CO2 and within minutes or hours the person can have homeostasis restored.
How long does renal regulation take to restore acidic blood levels to normal range? The kidneys can excrete Hydrogen ions and reabsorb bicarbonate in order to restore the homeostasis of the blood in a matter of days.
Name 1 Source of Hydrogen IONS in the body? Carbonic Acid is a major source of H+ and is from all cell activity which produces CO2.
Name 1 more Source of Hydrogen IONS in the body? Inorganic Acid is produced during nutrient breakdown- dietary proteins contain a large quantity of sulfuric acid and phosphoric acid.
Name the last Source of Hydrogen IONS in the body? Lactic acid and fatty acid.
Peripheral chemoreceptors respond to H+. True.
Central Chemoreceptors respond to CO2. True
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