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Questions and Answers
True or false: The heart in humans, mammals, and birds is divided into four chambers?
True or false: The heart in humans, mammals, and birds is divided into four chambers?
True (A)
True or false: Fish have three chambers in their heart?
True or false: Fish have three chambers in their heart?
False (B)
True or false: The heart is enclosed in a protective sac called the pericardium?
True or false: The heart is enclosed in a protective sac called the pericardium?
True (A)
True or false: The heart pumps blood with a rhythm determined by a group of pacemaker cells in the sinoatrial node?
True or false: The heart pumps blood with a rhythm determined by a group of pacemaker cells in the sinoatrial node?
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True or false: The heart is always located on the right side in all vertebrates?
True or false: The heart is always located on the right side in all vertebrates?
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Study Notes
Heart Structure and Location
- In humans, mammals, and birds, the heart is divided into four chambers.
- Fish have a different heart structure, with only two chambers in their heart.
- There is a protective sac called the pericardium that encloses the heart.
- The heart pumps blood with a rhythm determined by a group of pacemaker cells located in the sinoatrial node.
Heart Location in Vertebrates
- The heart is not always located on the right side in all vertebrates.
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