BIOS 256 Anatomy & Physiology IV
Exam 3 (Latest Update )
Anatomy and Physiology IV with Lab |
Questions & Answers | 100% Correct |
Grade A - Chamberlain
1. The heart lies in the:
A. Mediastinum
B. Pleural cavity
C. Peritoneal cavity
D. Abdominal cavity
Correct Answer: A. Mediastinum
Rationale: The mediastinum is the central compartment of the
thoracic cavity housing the heart.
2. The sac that encloses the heart is called the:
A. Pericardium
B. Endocardium
C. Myocardium
D. Epicardium
Correct Answer: A. Pericardium
,Rationale: Protects the heart and reduces friction during
contraction.
3. The thick middle layer of the heart wall is the:
A. Myocardium
B. Endocardium
C. Epicardium
D. Pericardium
Correct Answer: A. Myocardium
Rationale: Made of cardiac muscle responsible for pumping blood.
4. The inner lining of the heart chambers is the:
A. Endocardium
B. Myocardium
C. Epicardium
D. Pericardium
Correct Answer: A. Endocardium
Rationale: Provides smooth surface to prevent blood clotting.
5. The heart’s outermost layer is the:
A. Epicardium
B. Myocardium
C. Endocardium
D. Pericardium
,Correct Answer: A. Epicardium
Rationale: Part of the visceral pericardium and protects the heart.
6. The right atrium receives blood from the:
A. Superior and inferior vena cava
B. Pulmonary veins
C. Aorta
D. Coronary sinus only
Correct Answer: A. Superior and inferior vena cava
Rationale: Brings deoxygenated blood from the body to the heart.
7. The left atrium receives blood from the:
A. Pulmonary veins
B. Superior vena cava
C. Inferior vena cava
D. Coronary sinus
Correct Answer: A. Pulmonary veins
Rationale: Brings oxygenated blood from the lungs.
8. The valve between the right atrium and right ventricle is:
A. Tricuspid valve
B. Bicuspid valve
C. Pulmonary valve
D. Aortic valve
, Correct Answer: A. Tricuspid valve
Rationale: Prevents backflow of blood into the right atrium.
9. The valve between the left atrium and left ventricle is:
A. Bicuspid (mitral) valve
B. Tricuspid valve
C. Pulmonary valve
D. Aortic valve
Correct Answer: A. Bicuspid (mitral) valve
Rationale: Prevents backflow into the left atrium.
10. The valve between the right ventricle and pulmonary artery
is:
A. Pulmonary semilunar valve
B. Tricuspid valve
C. Aortic valve
D. Mitral valve
Correct Answer: A. Pulmonary semilunar valve
Rationale: Prevents blood from returning to the right ventricle.
11. The valve between the left ventricle and aorta is:
A. Aortic semilunar valve
B. Pulmonary valve
C. Tricuspid valve
D. Bicuspid valve
Exam 3 (Latest Update )
Anatomy and Physiology IV with Lab |
Questions & Answers | 100% Correct |
Grade A - Chamberlain
1. The heart lies in the:
A. Mediastinum
B. Pleural cavity
C. Peritoneal cavity
D. Abdominal cavity
Correct Answer: A. Mediastinum
Rationale: The mediastinum is the central compartment of the
thoracic cavity housing the heart.
2. The sac that encloses the heart is called the:
A. Pericardium
B. Endocardium
C. Myocardium
D. Epicardium
Correct Answer: A. Pericardium
,Rationale: Protects the heart and reduces friction during
contraction.
3. The thick middle layer of the heart wall is the:
A. Myocardium
B. Endocardium
C. Epicardium
D. Pericardium
Correct Answer: A. Myocardium
Rationale: Made of cardiac muscle responsible for pumping blood.
4. The inner lining of the heart chambers is the:
A. Endocardium
B. Myocardium
C. Epicardium
D. Pericardium
Correct Answer: A. Endocardium
Rationale: Provides smooth surface to prevent blood clotting.
5. The heart’s outermost layer is the:
A. Epicardium
B. Myocardium
C. Endocardium
D. Pericardium
,Correct Answer: A. Epicardium
Rationale: Part of the visceral pericardium and protects the heart.
6. The right atrium receives blood from the:
A. Superior and inferior vena cava
B. Pulmonary veins
C. Aorta
D. Coronary sinus only
Correct Answer: A. Superior and inferior vena cava
Rationale: Brings deoxygenated blood from the body to the heart.
7. The left atrium receives blood from the:
A. Pulmonary veins
B. Superior vena cava
C. Inferior vena cava
D. Coronary sinus
Correct Answer: A. Pulmonary veins
Rationale: Brings oxygenated blood from the lungs.
8. The valve between the right atrium and right ventricle is:
A. Tricuspid valve
B. Bicuspid valve
C. Pulmonary valve
D. Aortic valve
, Correct Answer: A. Tricuspid valve
Rationale: Prevents backflow of blood into the right atrium.
9. The valve between the left atrium and left ventricle is:
A. Bicuspid (mitral) valve
B. Tricuspid valve
C. Pulmonary valve
D. Aortic valve
Correct Answer: A. Bicuspid (mitral) valve
Rationale: Prevents backflow into the left atrium.
10. The valve between the right ventricle and pulmonary artery
is:
A. Pulmonary semilunar valve
B. Tricuspid valve
C. Aortic valve
D. Mitral valve
Correct Answer: A. Pulmonary semilunar valve
Rationale: Prevents blood from returning to the right ventricle.
11. The valve between the left ventricle and aorta is:
A. Aortic semilunar valve
B. Pulmonary valve
C. Tricuspid valve
D. Bicuspid valve
