Question

Indicate whether questions 1-5 are True or False. For all other questions, please choose the best answer. 1. The S1 or ""lubb""sound of the heart is produced by the AV valves closing. 2. The T wave of an electrocardiogram represents repolarization of the atria. 3. Tachycardia is a faster than normal heart rate, usually above 100 bpm. 4. The right ventricle wall is thicker than the left. 5. The fetal foramen ovale becomes the fossa ovalis after birth. 6. During diastole, a chamber of the heart a. relaxes and fills with blood. b. contracts and pushes blood into the adjacent chamber. c. experiences a sharp increase in pressure. d. reaches a pressure of approximately 120 mm Hg. 7. Which of the following is longer? a. the refractory period of a skeletal muscle fiber b. the refractory period of a cardiac muscle cell c. the action potential of a skeletal muscle fiber d. the contraction time of a skeletal muscle fiber 8. The right atrium does not receive blood from the a. inferior vena cava. b. superior vena cava. c. coronary sinus. d. circumflex artery. 9. Which of the following is a fibrous remnant of a fetal connection between the aorta and pulmonary trunk? a. fossa ovalis b. ligamentum arteriosum c. chordae tendineae d. trabeculae carneae 10. Abnormal stretch of the right atrium due to excessive blood volume triggers cardiac muscle cells to release a. brain natriuretic peptide (BNP) b. erythropoietin (EPO) c. angiotensin-converting enzyme (ACE) d. atrial natriuretic peptide (ANP)

          Indicate whether questions 1-5 are True or False. For all other
questions, please choose the best answer.
1. The S1 or ""lubb""sound of the heart is produced by the AV valves
closing.
2. The T wave of an electrocardiogram represents repolarization of
the atria.
3. Tachycardia is a faster than normal heart rate, usually above 100
bpm.
4. The right ventricle wall is thicker than the left.
5. The fetal foramen ovale becomes the fossa ovalis after birth.
6. During diastole, a chamber of the heart
a. relaxes and fills with blood.
b. contracts and pushes blood into the adjacent chamber.
c. experiences a sharp increase in pressure.
d. reaches a pressure of approximately 120 mm Hg.
7. Which of the following is longer?
a. the refractory period of a skeletal muscle fiber
b. the refractory period of a cardiac muscle cell
c. the action potential of a skeletal muscle fiber
d. the contraction time of a skeletal muscle fiber
8. The right atrium does not receive blood from the
a. inferior vena cava.
b. superior vena cava.
c. coronary sinus.
d. circumflex artery.
9. Which of the following is a fibrous remnant of a fetal connection
between the aorta and pulmonary trunk?
a. fossa ovalis
b. ligamentum arteriosum
c. chordae tendineae
d. trabeculae carneae
10. Abnormal stretch of the right atrium due to excessive blood
volume triggers cardiac muscle cells to release
a. brain natriuretic peptide (BNP)
b. erythropoietin (EPO)
c. angiotensin-converting enzyme (ACE)
d. atrial natriuretic peptide (ANP)

$Indicate whether questions 1-5 are True or False. For all other questions, please choose the best answer. 1. The S1 or ""lubb""sound of the heart is produced by the AV valves closing. 2. The T wave of an electrocardiogram represents repolarization of the atria. 3. Tachycardia is a faster than normal heart rate, usually above 100 bpm. 4. The right ventricle wall is thicker than the left. 5. The fetal foramen ovale becomes the fossa ovalis after birth. 6. During diastole, a chamber of the heart a. relaxes and fills with blood. b. contracts and pushes blood into the adjacent chamber. c. experiences a sharp increase in pressure. d. reaches a pressure of approximately 120 mm Hg. 7. Which of the following is longer? a. the refractory period of a skeletal muscle fiber b. the refractory period of a cardiac muscle cell c. the action potential of a skeletal muscle fiber d. the contraction time of a skeletal muscle fiber 8. The right atrium does not receive blood from the a. inferior vena cava. b. superior vena cava. c. coronary sinus. d. circumflex artery. 9. Which of the following is a fibrous remnant of a fetal connection between the aorta and pulmonary trunk? a. fossa ovalis b. ligamentum arteriosum c. chordae tendineae d. trabeculae carneae 10. Abnormal stretch of the right atrium due to excessive blood volume triggers cardiac muscle cells to release a. brain natriuretic peptide (BNP) b. erythropoietin (EPO) c. angiotensin-converting enzyme (ACE) d. atrial natriuretic peptide (ANP)$

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