BIOS 252 Week 6 Quiz Exam 2 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. The primary function of the cardiovascular system is:
A. Digest food
B. Transport nutrients, gases, and waste
C. Filter lymph
D. Produce hormones
Correct Answer: B
Rationale: The cardiovascular system circulates blood to deliver
oxygen and nutrients while removing wastes.
2. The heart is located in the:
A. Abdomen
B. Thoracic cavity
C. Cranial cavity
D. Pelvic cavity
Correct Answer: B
Rationale: The heart lies in the mediastinum of the thorax, between
the lungs.
,3. The right atrium receives blood from:
A. Pulmonary veins
B. Superior and inferior vena cava
C. Pulmonary artery
D. Aorta
Correct Answer: B
Rationale: Deoxygenated blood from the body enters the right
atrium via the venae cavae.
4. The left ventricle pumps blood into the:
A. Pulmonary artery
B. Aorta
C. Right atrium
D. Superior vena cava
Correct Answer: B
Rationale: The left ventricle generates systemic circulation through
the aorta.
5. The heart valves prevent:
A. Backflow of blood
B. Oxygen delivery
C. Electrical conduction
D. RBC production
Correct Answer: A
,Rationale: Valves ensure unidirectional blood flow through the
heart chambers.
6. The pulmonary valve is located between:
A. Right atrium and right ventricle
B. Right ventricle and pulmonary artery
C. Left atrium and left ventricle
D. Left ventricle and aorta
Correct Answer: B
Rationale: It prevents backflow into the right ventricle during
diastole.
7. The bicuspid (mitral) valve is located between:
A. Right atrium and right ventricle
B. Left atrium and left ventricle
C. Left ventricle and aorta
D. Right ventricle and pulmonary artery
Correct Answer: B
Rationale: It prevents backflow into the left atrium.
8. The sinoatrial (SA) node functions as:
A. Pacemaker of the heart
B. Oxygen sensor
C. Valve controller
D. RBC producer
, Correct Answer: A
Rationale: The SA node initiates electrical impulses for heart
contraction.
9. The atrioventricular (AV) node:
A. Delays impulse to allow ventricular filling
B. Initiates SA node activity
C. Pumps blood
D. Produces hormones
Correct Answer: A
Rationale: The AV node ensures coordinated atrial and ventricular
contraction.
10. The QRS complex on ECG represents:
A. Atrial depolarization
B. Ventricular depolarization
C. Ventricular repolarization
D. Heart relaxation
Correct Answer: B
Rationale: QRS reflects ventricular contraction.
11. The P wave on ECG represents:
A. Atrial depolarization
B. Ventricular depolarization
C. Ventricular repolarization
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. The primary function of the cardiovascular system is:
A. Digest food
B. Transport nutrients, gases, and waste
C. Filter lymph
D. Produce hormones
Correct Answer: B
Rationale: The cardiovascular system circulates blood to deliver
oxygen and nutrients while removing wastes.
2. The heart is located in the:
A. Abdomen
B. Thoracic cavity
C. Cranial cavity
D. Pelvic cavity
Correct Answer: B
Rationale: The heart lies in the mediastinum of the thorax, between
the lungs.
,3. The right atrium receives blood from:
A. Pulmonary veins
B. Superior and inferior vena cava
C. Pulmonary artery
D. Aorta
Correct Answer: B
Rationale: Deoxygenated blood from the body enters the right
atrium via the venae cavae.
4. The left ventricle pumps blood into the:
A. Pulmonary artery
B. Aorta
C. Right atrium
D. Superior vena cava
Correct Answer: B
Rationale: The left ventricle generates systemic circulation through
the aorta.
5. The heart valves prevent:
A. Backflow of blood
B. Oxygen delivery
C. Electrical conduction
D. RBC production
Correct Answer: A
,Rationale: Valves ensure unidirectional blood flow through the
heart chambers.
6. The pulmonary valve is located between:
A. Right atrium and right ventricle
B. Right ventricle and pulmonary artery
C. Left atrium and left ventricle
D. Left ventricle and aorta
Correct Answer: B
Rationale: It prevents backflow into the right ventricle during
diastole.
7. The bicuspid (mitral) valve is located between:
A. Right atrium and right ventricle
B. Left atrium and left ventricle
C. Left ventricle and aorta
D. Right ventricle and pulmonary artery
Correct Answer: B
Rationale: It prevents backflow into the left atrium.
8. The sinoatrial (SA) node functions as:
A. Pacemaker of the heart
B. Oxygen sensor
C. Valve controller
D. RBC producer
, Correct Answer: A
Rationale: The SA node initiates electrical impulses for heart
contraction.
9. The atrioventricular (AV) node:
A. Delays impulse to allow ventricular filling
B. Initiates SA node activity
C. Pumps blood
D. Produces hormones
Correct Answer: A
Rationale: The AV node ensures coordinated atrial and ventricular
contraction.
10. The QRS complex on ECG represents:
A. Atrial depolarization
B. Ventricular depolarization
C. Ventricular repolarization
D. Heart relaxation
Correct Answer: B
Rationale: QRS reflects ventricular contraction.
11. The P wave on ECG represents:
A. Atrial depolarization
B. Ventricular depolarization
C. Ventricular repolarization
