Which of the following triggers hyperventilation?
A) low concentration of hydrogen ions in arterial blood
B) high partial pressure of carbon dioxide (PCO2 ) in arterial blood
C) low partial pressure of carbon dioxide (PCO2 ) in arterial blood
D) high partial pressure of oxygen (PO2 ) in arterial blood
B) high partial pressure of carbon dioxide (PCO2 ) in arterial blood
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All ANS preganglionic axons release ________ as their neurotransmitter.
Fill in the blank(s) with the appropriate word(s).
Water molecules and small ions enter a cell through
A) channels formed by integral membrane proteins. B) peripheral proteins. C) lipid channels. D) peripheral carbohydrates. E) defects in the lipid layer of the membrane.
When a cell is not dividing, it is said to be in ________________________________________
Fill in the blank(s) with correct word
The auditory ossicles are in the inner ear
Indicate whether the statement is true or false