Chapter 3 Flashcards
Composed of the respiratory and cardiovascular system
Cardiorespiratory system
Blood vessels, blood, and the heart
The cardiovascular system
Carry blood away from the heart to the rest of the body
Arteries
Return blood to the heart from the rest of the body
Veins
The amount of blood pumped out the heart with each contraction
Stroke volume
Heart rate × stroke volume
Cardiac output
The “pacemaker” of the heart because it initiates the heartbeat
Sinoatrial (SA) node
What is the typical heart rate for an adult?
70-80 BPM
The heart has two pairs of different chambers. These chambers are called the ____ and ____.
Atriums and ventricles
What is the function of the heart’s right atrium?
Receives blood coming from the body
What is the function of the heart’s left atrium?
Receives blood (oxygen-rich) coming from the lungs and the heart
What is the function of the heart’s right ventricle?
Pumps blood a short distance back to the heart and the lungs (has thinner walls than the left)
What is the function of the heart’s left ventricle?
Pushes blood to the rest of the body (has much thicker walls then the right and is a much higher pressure pump)
What are the 3 functions of blood?
Protection, Regulation, & Transportation
Which function of blood is being described: The white blood cells help to protect your body against diseases and blood clotting helps with fluid loss.
Protection