16 Questions
What is the primary function of the mammalian heart?
Pumping oxygen-rich blood to the body
In which type of circulation are multiple chambers connected in series and guarded by valves?
Systemic circulation
How many complete chambers does the mammalian heart have?
Two atria and two ventricles
Which chamber of the heart receives oxygen-poor blood returning from the head and body?
Right atrium
What is the function of valves in the circulatory system?
Ensure unidirectional blood flow
Which type of animal has a heart with incomplete chambers?
Reptiles
Which chamber of the mammalian heart receives blood from the left atrium and pumps it to the aorta for systemic circulation?
Left ventricle
What structure ensures the unidirectional flow of blood in the mammalian heart?
Heart valves
Which type of cells constitute the bulk of the heart wall in the mammalian heart?
Contractile cells
What is the function of autorhythmic cells in the mammalian heart?
Generation of electrical impulses
Where is the sinoatrial (SA) node located in the mammalian heart?
Right atrium
Which layer of the mammalian heart forms a fluid-filled sac that surrounds the heart?
Pericardium
What allows flow from ventricles into arteries during ventricular contraction in the mammalian heart?
Aortic and pulmonary valves
What prevents backflow from atria into veins in the mammalian heart?
Atrial pressures higher than venous pressures
Which chamber of the mammalian heart receives O2-rich blood from lungs via pulmonary veins?
Left atrium
What structure allows flow from atria into ventricles during ventricular filling in the mammalian heart?
Heart valves
Explore the general plan of the circulatory system, types of circulation, structure and function of the mammalian heart, pacemakers, blood vessels, control of circulation, comparative aspects of the circulatory system, and the lymphatic system.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
