Which of the following terms describes the relaxation of the chambers of the heart during the cardiac cycle?
Tachycardia
Diastole
Systole
Bradycardia
The Correct Answer is B
The relaxation of the chambers of the heart during the cardiac cycle is called diastole. The cardiac cycle is a sequence of events that occurs when the heart beats ². It consists of two phases: systole, when the heart contracts and pumps blood into circulation, and diastole when the heart relaxes and fills with blood.
The other options are not correct because they do not accurately describe the relaxation of the chambers of the heart during the cardiac cycle. Tachycardia is a rapid heart rate, bradycardia is a slow heart rate, and systole is the contraction of the heart chambers.
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Related Questions
Correct Answer is C
Explanation
The study does not indicate a causal relationship between the processes. A correlation between two processes means that there is a statistical relationship between them, but it does not necessarily imply causation. In other words, just because two processes are correlated does not mean that one causes the other.
A. The study does not indicate that Process A causes Process B.
B. The study can indicate whether Processes A and B have a positive relationship if the correlation is positive.
D. The study can indicate whether Processes A and B have a negative relationship if the correlation is negative.
Correct Answer is D
Explanation
An oxidation reaction occurs when there is a removal of electrons. Oxidation is the loss of electrons during a reaction by a molecule, atom, or ion. When oxidation occurs, the oxidation state of the chemical species increases.
The other options are not correct because they do not accurately describe what occurs in an oxidation reaction. Removal of oxygen, addition of carbon, and addition of neutrons are not processes that occur in an oxidation reaction.
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