Blood and Cardiovascular System Test
1. List the organs and tissues of the cardiovascular system. (3)Correct answer - Organs:
heart and blood vessels (arteries, veins, capillaries
Tissue: blood
2. Briefly discuss the function of the cardiovascular system. (4)Correct answer -
Transportation of various substances throughout the body such as oxygen & CO2,
nutrients & wastes, hormones, etc.
Blood carries these substances
Heart pumps blood through vessels
7. List the 3 layers of the heart wall. (10)Correct answer - Epicardium or visceral
pericardium
Myocardium is the thick muscular layer
Endocardium lines heart chambers
8. Describe the myocardium. (11 & 12)Correct answer - Thick bundles of cardiac
muscle that are twisted into ring-like arrangements
This is the layer of the heart wall that actually contracts
Myocardium is cardiac muscle
10. Briefly discuss the four chambers of the heart. (17)Correct answer - Atria: Upper
chambers, receive blood
Ventricles: Lower chambers, discharge blood
11. How are the right and left sides of the heart divided? (18)Correct answer - A septum
divides the heart longitudinally between the ventricles and is called the interventricular
septum
The atria are separated by the interatrial septum
26. What is the average heart rate?Correct answer - 60-100 beats per minute
What heart rate qualifies as too fast or too slow?Correct answer - Rapid heart rate is
called tachycardia, over 100 bpm
Slow heart rate is called bradycardia, less than 60 bpm
What is coronary artery disease?Correct answer - limited blow flow to the heart due to a
build-up of plaque in coronary arteries
Define atherosclerosisCorrect answer - A narrowing of the arteries due to an excessive
accumulation of plaque
Starts with damage to endothelium often caused by hypertension, high cholesterol,
smoking, and high blood sugar
1. List the organs and tissues of the cardiovascular system. (3)Correct answer - Organs:
heart and blood vessels (arteries, veins, capillaries
Tissue: blood
2. Briefly discuss the function of the cardiovascular system. (4)Correct answer -
Transportation of various substances throughout the body such as oxygen & CO2,
nutrients & wastes, hormones, etc.
Blood carries these substances
Heart pumps blood through vessels
7. List the 3 layers of the heart wall. (10)Correct answer - Epicardium or visceral
pericardium
Myocardium is the thick muscular layer
Endocardium lines heart chambers
8. Describe the myocardium. (11 & 12)Correct answer - Thick bundles of cardiac
muscle that are twisted into ring-like arrangements
This is the layer of the heart wall that actually contracts
Myocardium is cardiac muscle
10. Briefly discuss the four chambers of the heart. (17)Correct answer - Atria: Upper
chambers, receive blood
Ventricles: Lower chambers, discharge blood
11. How are the right and left sides of the heart divided? (18)Correct answer - A septum
divides the heart longitudinally between the ventricles and is called the interventricular
septum
The atria are separated by the interatrial septum
26. What is the average heart rate?Correct answer - 60-100 beats per minute
What heart rate qualifies as too fast or too slow?Correct answer - Rapid heart rate is
called tachycardia, over 100 bpm
Slow heart rate is called bradycardia, less than 60 bpm
What is coronary artery disease?Correct answer - limited blow flow to the heart due to a
build-up of plaque in coronary arteries
Define atherosclerosisCorrect answer - A narrowing of the arteries due to an excessive
accumulation of plaque
Starts with damage to endothelium often caused by hypertension, high cholesterol,
smoking, and high blood sugar
