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Questions and Answers
What is the primary function of the mammalian heart?
What is the primary function of the mammalian heart?
- Receiving oxygen-poor blood from the body
- Pumping oxygen-rich blood to the lungs for oxygenation
- Pumping oxygen-rich blood to the body (correct)
- Receiving oxygen-poor blood from the lungs
In which type of circulation are multiple chambers connected in series and guarded by valves?
In which type of circulation are multiple chambers connected in series and guarded by valves?
- Coronary circulation
- Systemic circulation (correct)
- Pulmonary circulation
- Cardiac circulation
How many complete chambers does the mammalian heart have?
How many complete chambers does the mammalian heart have?
- Two atria and two ventricles (correct)
- Three atria and two ventricles
- Two atria and one ventricle
- One atrium and one ventricle
Which chamber of the heart receives oxygen-poor blood returning from the head and body?
Which chamber of the heart receives oxygen-poor blood returning from the head and body?
What is the function of valves in the circulatory system?
What is the function of valves in the circulatory system?
Which type of animal has a heart with incomplete chambers?
Which type of animal has a heart with incomplete chambers?
Which chamber of the mammalian heart receives blood from the left atrium and pumps it to the aorta for systemic circulation?
Which chamber of the mammalian heart receives blood from the left atrium and pumps it to the aorta for systemic circulation?
What structure ensures the unidirectional flow of blood in the mammalian heart?
What structure ensures the unidirectional flow of blood in the mammalian heart?
Which type of cells constitute the bulk of the heart wall in the mammalian heart?
Which type of cells constitute the bulk of the heart wall in the mammalian heart?
What is the function of autorhythmic cells in the mammalian heart?
What is the function of autorhythmic cells in the mammalian heart?
Where is the sinoatrial (SA) node located in the mammalian heart?
Where is the sinoatrial (SA) node located in the mammalian heart?
Which layer of the mammalian heart forms a fluid-filled sac that surrounds the heart?
Which layer of the mammalian heart forms a fluid-filled sac that surrounds the heart?
What allows flow from ventricles into arteries during ventricular contraction in the mammalian heart?
What allows flow from ventricles into arteries during ventricular contraction in the mammalian heart?
What prevents backflow from atria into veins in the mammalian heart?
What prevents backflow from atria into veins in the mammalian heart?
Which chamber of the mammalian heart receives O2-rich blood from lungs via pulmonary veins?
Which chamber of the mammalian heart receives O2-rich blood from lungs via pulmonary veins?
What structure allows flow from atria into ventricles during ventricular filling in the mammalian heart?
What structure allows flow from atria into ventricles during ventricular filling in the mammalian heart?
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