BIO 272: Heart and Blood Vessels Unit
Exam Questions and Answers
Supplies blood to the heart muscle cells: - Correct Answers -Coronary circulation
Arteries carry deoxygenated blood and veins carry oxygenated blood: - Correct
Answers -Pulmonary circulation
Arteries carry oxygenated blood and veins carry deoxygenated blood: - Correct
Answers -Systemic circulation
What carries blood away from the heart? - Correct Answers -arteries
What carries blood toward the heart? - Correct Answers -veins
The area of the thoracic cavity that holds the heart: - Correct Answers –Mediastinum
When chemoreceptors detect low O2 or high CO2, what happens in the viscera? -
Correct Answers -Vasoconstriction
When chemoreceptors detect low O2 or high CO2, what happens to the blood
pressure? - Correct Answers -The blood pressure increases
How does epinephrine affect the body? - Correct Answers -Increases heart rate,
vasoconstriction in the viscera, vasodilation in the skeletal muscle
How does epinephrine affect the blood pressure? - Correct Answers -It increases the
blood pressure
Which organ releases epinephrine? - Correct Answers -The adrenal gland
When is epinephrine released? - Correct Answers -To prepare the body for sudden
activity
What lines the inside of the heart allowing for smooth blood flow and preventing blood
clots? (serous membrane- simple squamous epithelium held in place by areolar
connective tissue) - Correct Answers -The endocardium
Which layer is made of dense irregular tissue and functions to protect and hold the heart
in place? - Correct Answers -The fibrous pericardium
, What layer makes up the thickest part of the heart wall? (made of cardiac muscle and
capillaries) - Correct Answers -The Myocardium
Which layer is attached to the inside of the fibrous pericardium? (serous membrane-
simple squamous epithelium held in place by areolar connective tissue) - Correct
Answers -The parietal pericardium
Fluid filled space between the parietal pericardium and visceral pericardium that allows
for smooth movement of the heart: - Correct Answers -The pericardial cavity
Which layer is attached to the surface of the heart? (serous membrane- simple
squamous epithelium held in place by areolar connective tissue) - Correct Answers -The
visceral pericardium/epicardium
The valves are closed when the heart is relaxed and the valves are open when the
heart contracts: - Correct Answers -Semilunar valves
Valves are between the ventricles and the arteries: - Correct Answers -Semilunar valves
Which valves are examples of semilunar valves? - Correct Answers -The aortic valve
and the pulmonary valve
The valves are open when the heart is relaxed and the valves are closed when the
heart contracts: - Correct Answers -AV valves
These valves are found between the atria and the ventricles: - Correct Answers -AV
valves
In what valves are the cusps connected to the papillary muscles by chordae tendineae?
- Correct Answers -The AV valves
Which valves are examples of AV valves? - Correct Answers -The biscuspid and
tricuspid valves
Supplies blood to the front of the heart: - Correct Answers -Left coronary artery
What are the branches of the left coronary artery? - Correct Answers -circumflex artery
and anterior interventricular artery
Supplies blood to the back of the heart: - Correct Answers -Right coronary artery
What are the branches of the right coronary artery? - Correct Answers -The marginal
artery and posterior interventricular artery
Collects blood from cardiac veins and empties into the right atrium: - Correct Answers -
Cardiac sinus
Exam Questions and Answers
Supplies blood to the heart muscle cells: - Correct Answers -Coronary circulation
Arteries carry deoxygenated blood and veins carry oxygenated blood: - Correct
Answers -Pulmonary circulation
Arteries carry oxygenated blood and veins carry deoxygenated blood: - Correct
Answers -Systemic circulation
What carries blood away from the heart? - Correct Answers -arteries
What carries blood toward the heart? - Correct Answers -veins
The area of the thoracic cavity that holds the heart: - Correct Answers –Mediastinum
When chemoreceptors detect low O2 or high CO2, what happens in the viscera? -
Correct Answers -Vasoconstriction
When chemoreceptors detect low O2 or high CO2, what happens to the blood
pressure? - Correct Answers -The blood pressure increases
How does epinephrine affect the body? - Correct Answers -Increases heart rate,
vasoconstriction in the viscera, vasodilation in the skeletal muscle
How does epinephrine affect the blood pressure? - Correct Answers -It increases the
blood pressure
Which organ releases epinephrine? - Correct Answers -The adrenal gland
When is epinephrine released? - Correct Answers -To prepare the body for sudden
activity
What lines the inside of the heart allowing for smooth blood flow and preventing blood
clots? (serous membrane- simple squamous epithelium held in place by areolar
connective tissue) - Correct Answers -The endocardium
Which layer is made of dense irregular tissue and functions to protect and hold the heart
in place? - Correct Answers -The fibrous pericardium
, What layer makes up the thickest part of the heart wall? (made of cardiac muscle and
capillaries) - Correct Answers -The Myocardium
Which layer is attached to the inside of the fibrous pericardium? (serous membrane-
simple squamous epithelium held in place by areolar connective tissue) - Correct
Answers -The parietal pericardium
Fluid filled space between the parietal pericardium and visceral pericardium that allows
for smooth movement of the heart: - Correct Answers -The pericardial cavity
Which layer is attached to the surface of the heart? (serous membrane- simple
squamous epithelium held in place by areolar connective tissue) - Correct Answers -The
visceral pericardium/epicardium
The valves are closed when the heart is relaxed and the valves are open when the
heart contracts: - Correct Answers -Semilunar valves
Valves are between the ventricles and the arteries: - Correct Answers -Semilunar valves
Which valves are examples of semilunar valves? - Correct Answers -The aortic valve
and the pulmonary valve
The valves are open when the heart is relaxed and the valves are closed when the
heart contracts: - Correct Answers -AV valves
These valves are found between the atria and the ventricles: - Correct Answers -AV
valves
In what valves are the cusps connected to the papillary muscles by chordae tendineae?
- Correct Answers -The AV valves
Which valves are examples of AV valves? - Correct Answers -The biscuspid and
tricuspid valves
Supplies blood to the front of the heart: - Correct Answers -Left coronary artery
What are the branches of the left coronary artery? - Correct Answers -circumflex artery
and anterior interventricular artery
Supplies blood to the back of the heart: - Correct Answers -Right coronary artery
What are the branches of the right coronary artery? - Correct Answers -The marginal
artery and posterior interventricular artery
Collects blood from cardiac veins and empties into the right atrium: - Correct Answers -
Cardiac sinus
