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The Living World 8th Edition by George Johnson
Edition 8ISBN: 978-0078024214The Living World 8th Edition by George Johnson
Edition 8ISBN: 978-0078024214 Exercise 14
The four-chambered heart and double-loop vessel system are thought to be important in the evolution of
A) locomotion.
B) ectothermy.
C) exothermy.
D) endothermy.
When major arteries become partially blocked by deposits of plaque, the heart's left ventricle must work harder and harder to pump enough blood, and the heart eventually becomes weakened and begins to fail. This condition, known as congestive heart failure, often leads to fatal pulmonary edema (accumulation of fluid). Explain why.
A molecule of CO2 that is generated in the cardiac muscle of the left ventricle would not pass through which of the following structures before leaving the body?
A) right atrium
B) left atrium
C) right ventricle
D) left ventricle
A) locomotion.
B) ectothermy.
C) exothermy.
D) endothermy.
When major arteries become partially blocked by deposits of plaque, the heart's left ventricle must work harder and harder to pump enough blood, and the heart eventually becomes weakened and begins to fail. This condition, known as congestive heart failure, often leads to fatal pulmonary edema (accumulation of fluid). Explain why.
A molecule of CO2 that is generated in the cardiac muscle of the left ventricle would not pass through which of the following structures before leaving the body?
A) right atrium
B) left atrium
C) right ventricle
D) left ventricle
Explanation
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Verified
The hearts of bird and mammals are two-c...
The Living World 8th Edition by George Johnson
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