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Question
What is the second heart sound associated with?a. opening of the semilunar valves
b. closure of the semilunar valves
c. opening of the AV valves
d. closing of the AV valves
e. firing of the SA node
Answer
This answer is hidden. It contains 1 characters.
Related questions
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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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b. The process of filtration through the glomerulus
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What happens when the hydrogen ion concentration in the body fluids is too low?
a. Oxygen absorption increases.
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c. Hydrogen absorption 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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How are glucose and amino acids reabsorbed in the proximal tubule?
a. primary passive transport
b. secondary passive transport
c. primary active transport
d. secondary active transport
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What are the two major control mechanisms that regulate the glomerular filtration rate (GFR)?
a. internal regulation and intrinsic parasympathetic control
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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Emphysema is characterized by __________ of the smaller airways and breakdown of __________ walls.
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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:
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b. pneumotaxic center
c. respiratory modulator
d. pre-Btzinger complex
e. apneustic center
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