Voltage-gated channels open or close in response to changes in membrane potential
a. True
b. False
Indicate whether the statement is true or false
True
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A hemoglobin molecule is composed of
A) just two protein chains. B) four protein chains and four heme groups. C) four heme groups but no protein. D) just four protein chains and nothing else. E) just three protein chains.
The stronger the triggering event, the larger the resultant graded potential
a. True b. False Indicate whether the statement is true or false
Which of the following is NOT involved in short-term regulation of blood pressure?
A. Baroreceptor reflex B. Alteration in blood volume C. Adrenal medullary mechanism D. Chemoreceptor mechanism
Damage to the thoracic and lumbar regions of the spinal cord would cause heart rate to be chronically increased compared to normal.
Answer the following statement true (T) or false (F)