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Question
Botulinum toxin exerts its lethal blow by blocking the release of what chemical compound?a. calcium
b. serotonin
c. ACh
d. potassium
e. dopamine
Answer
This answer is hidden. It contains 1 characters.
Related questions
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Describe how hydrogen ion secretion impacts acid-base balance.
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a. True
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a. True
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The plasma clearance rate for a secreted substance is always less than the glomerular filtration rate.
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Hydrogen ions are only secreted by the proximal tubules.
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a. True
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a. True
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The loop of Henle forms a sharp U-shaped or hairpin loop that surrounds the renal cortex.
a. True
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What does micturition mean?
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b. The process of filtration through the glomerulus
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d. The final filtration of urine
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What happens when the hydrogen ion concentration in the body fluids is too low?
a. Oxygen absorption increases.
b. Hydrogen absorption increases.
c. Hydrogen absorption decreases.
d. Hydrogen secretion increases.
e. Hydrogen secretion decreases.
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The most prevalent ions secreted by the tubules are:
a. sodium and chloride
b. sodium and hydrogen
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a. potassium
b. chloride
c. sodium
d. glucose
e. phosphorus
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a. primary passive transport
b. secondary passive transport
c. primary active transport
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What are the two major control mechanisms that regulate the glomerular filtration rate (GFR)?
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b. autoregulation and intrinsic sympathetic control
c. internal regulation and extrinsic parasympathetic control
d. autoregulation and extrinsic sympathetic control
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Gas exchange at both the pulmonary capillary and the tissue capillary levels involves simple __________ diffusion of O2 and CO2 down __________ pressure gradients.
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a. True
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a. True
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a. True
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a. chest muscles
b. abdominal muscles
c. intercostal muscles
d. bronchioles
e. diaphragm
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Generation of respiratory rhythm is now known to lie in the:
a. medullary respiratory center
b. pneumotaxic center
c. respiratory modulator
d. pre-Btzinger complex
e. apneustic center
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The most important factor determining the percentage of hemoglobin saturation is the:
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c. pH of the blood
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