Chapter 19 The Circulatory System: Heart
1. Human heart contracts---------- times per minute. (A) 70
(B) 75 (C) 80 (D) 85
Ans B Diff Easy Page 824
2. The system that transports blood to and from the lungs where it picks up oxygen and delivers carbon dioxide
for exhalation is:
(A) Pulmonary circuit
(B) Systemic circuit
(C) Pulmonary capillaries
(D) None of them
Ans A Diff Moderate Page 827
3. Which of the following is incorrect for the fibrous pericardium? (A) Tough connective tissues
(B) Dense connective tissues (C) Maintains position in heart (D) Maintains position in thorax Ans C Diff
Hard Page 828
4. The lubricating serous fluid that fills the pericardia I cavity and reduces friction as heart contracts is secreted
by:
(A) Pericardium (B) Epicedium (C) Both a & b
(D) Mesothelium
, Ans D Diff Medium Page 829
5. The location of major coronary blood vessels is: (A) Auricle
(B) Sulcus
(C) Myocardium
(D) Pericardium
Ans B Diff Medium Page 830
6. The middle and thickest layer is the myocardium, made largely of cardiac muscle cells. (A) True
(B) False
Ans A Diff Easy Page 830
7. Although the ventricles on the right and left sides pump the same amount of blood per contraction, the
muscle of the left ventricle is much thicker and better developed than that of the right ventricle. In order to
overcome the high resistance required to pump blood into the long systemic circuit:
(A) Right ventricle generate great amount of pressure
(B) Left ventricle generate great amount of pressure
(C) Both ventricles generate equal amount of pressure
(D) Pressure has nothing to do with the resistance
Ans B Diff Hard Page 831
8. The interatrial septum of an adult heart bears an oval-shaped depression known as the: (A) Fossa ovalis
(B) Foramen ovale (C) Septum primum (D) Valve
Ans A Diff Medium Page 832
9. Number of chambers of the heart are .
(A) One
(B) Two
(C) Three
1. Human heart contracts---------- times per minute. (A) 70
(B) 75 (C) 80 (D) 85
Ans B Diff Easy Page 824
2. The system that transports blood to and from the lungs where it picks up oxygen and delivers carbon dioxide
for exhalation is:
(A) Pulmonary circuit
(B) Systemic circuit
(C) Pulmonary capillaries
(D) None of them
Ans A Diff Moderate Page 827
3. Which of the following is incorrect for the fibrous pericardium? (A) Tough connective tissues
(B) Dense connective tissues (C) Maintains position in heart (D) Maintains position in thorax Ans C Diff
Hard Page 828
4. The lubricating serous fluid that fills the pericardia I cavity and reduces friction as heart contracts is secreted
by:
(A) Pericardium (B) Epicedium (C) Both a & b
(D) Mesothelium
, Ans D Diff Medium Page 829
5. The location of major coronary blood vessels is: (A) Auricle
(B) Sulcus
(C) Myocardium
(D) Pericardium
Ans B Diff Medium Page 830
6. The middle and thickest layer is the myocardium, made largely of cardiac muscle cells. (A) True
(B) False
Ans A Diff Easy Page 830
7. Although the ventricles on the right and left sides pump the same amount of blood per contraction, the
muscle of the left ventricle is much thicker and better developed than that of the right ventricle. In order to
overcome the high resistance required to pump blood into the long systemic circuit:
(A) Right ventricle generate great amount of pressure
(B) Left ventricle generate great amount of pressure
(C) Both ventricles generate equal amount of pressure
(D) Pressure has nothing to do with the resistance
Ans B Diff Hard Page 831
8. The interatrial septum of an adult heart bears an oval-shaped depression known as the: (A) Fossa ovalis
(B) Foramen ovale (C) Septum primum (D) Valve
Ans A Diff Medium Page 832
9. Number of chambers of the heart are .
(A) One
(B) Two
(C) Three
