12 Questions
What is the iron-containing molecule in red blood cells?
Hemoglobin
Why can a person with type O blood donate blood to a person with any blood type?
Type O blood contains neither A nor B antigens
In which part of the body do infections result in an increased number of white blood cells?
Blood
What is the main cause of a heart attack according to the text?
Plaque Build-up in Blood Vessels
Which system returns fluids from around cells back to blood vessels?
Lymphatic System
What happens when the diaphragm relaxes according to the text?
Exhalation occurs
What is the function of the cardiovascular system?
Distributing nutrients throughout the body
Which chamber of the heart receives blood from the venae cavae?
Right atrium
What initiates the contraction of the heart?
Sinoatrial node
What do veins contain that prevents the backward flow of blood?
Valves
Which blood vessels return oxygen-rich blood to the heart from the lungs?
Pulmonary veins
Where do arteries carry blood?
To all parts of the body including the lungs
Test your knowledge on the cardiovascular system and heart chambers. Learn about the distribution of oxygen in the body, the functions of the cardiovascular system, and the anatomy of the heart chambers.
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