BIOS 256 Anatomy & Physiology IV
Exam final (Latest Update )
Anatomy and Physiology IV with Lab |
Questions & Answers | 100% Correct |
Grade A - Chamberlain
1. The main function of the circulatory system is to:
A. Transport nutrients, gases, and wastes
B. Filter toxins only
C. Digest food
D. Store energy
Correct Answer: A. Transport nutrients, gases, and wastes
Rationale: Circulatory system delivers oxygen and nutrients and
removes waste.
2. The heart’s left ventricle pumps blood into the:
A. Aorta
B. Pulmonary artery
C. Vena cava
D. Right atrium
Correct Answer: A. Aorta
Rationale: Left ventricle generates systemic circulation.
,3. The right atrium receives blood from the:
A. Superior and inferior vena cava
B. Pulmonary veins
C. Aorta
D. Pulmonary artery
Correct Answer: A. Superior and inferior vena cava
Rationale: Deoxygenated blood returns from body to right atrium.
4. The valve between the left atrium and left ventricle is the:
A. Bicuspid (mitral) valve
B. Tricuspid valve
C. Aortic valve
D. Pulmonary valve
Correct Answer: A. Bicuspid (mitral) valve
Rationale: Prevents backflow of blood into left atrium.
5. The valve between the right atrium and right ventricle is the:
A. Tricuspid valve
B. Bicuspid valve
C. Pulmonary valve
D. Aortic valve
Correct Answer: A. Tricuspid valve
Rationale: Prevents backflow into right atrium.
,6. The semilunar valve between the right ventricle and pulmonary
artery is:
A. Pulmonary valve
B. Aortic valve
C. Tricuspid valve
D. Bicuspid valve
Correct Answer: A. Pulmonary valve
Rationale: Prevents backflow into right ventricle during diastole.
7. The semilunar valve between the left ventricle and aorta is:
A. Aortic valve
B. Pulmonary valve
C. Tricuspid valve
D. Bicuspid valve
Correct Answer: A. Aortic valve
Rationale: Prevents backflow into left ventricle.
8. The “pacemaker” of the heart is the:
A. Sinoatrial (SA) node
B. Atrioventricular (AV) node
C. Purkinje fibers
D. Bundle of His
Correct Answer: A. Sinoatrial (SA) node
Rationale: Initiates electrical impulses that set heart rate.
, 9. The AV node is responsible for:
A. Delaying the impulse to allow ventricular filling
B. Initiating heartbeat
C. Contracting atria
D. Pumping blood to lungs
Correct Answer: A. Delaying the impulse to allow ventricular
filling
Rationale: Ensures atria empty before ventricles contract.
10. Purkinje fibers:
A. Conduct impulses rapidly through ventricles
B. Initiate atrial contraction
C. Pump blood
D. Control SA node
Correct Answer: A. Conduct impulses rapidly through ventricles
Rationale: Stimulates coordinated ventricular contraction.
11. Cardiac output is calculated as:
A. Heart rate × stroke volume
B. Stroke volume ÷ heart rate
C. Blood pressure × heart rate
D. Heart rate only
Correct Answer: A. Heart rate × stroke volume
Rationale: Total blood pumped per minute.
Exam final (Latest Update )
Anatomy and Physiology IV with Lab |
Questions & Answers | 100% Correct |
Grade A - Chamberlain
1. The main function of the circulatory system is to:
A. Transport nutrients, gases, and wastes
B. Filter toxins only
C. Digest food
D. Store energy
Correct Answer: A. Transport nutrients, gases, and wastes
Rationale: Circulatory system delivers oxygen and nutrients and
removes waste.
2. The heart’s left ventricle pumps blood into the:
A. Aorta
B. Pulmonary artery
C. Vena cava
D. Right atrium
Correct Answer: A. Aorta
Rationale: Left ventricle generates systemic circulation.
,3. The right atrium receives blood from the:
A. Superior and inferior vena cava
B. Pulmonary veins
C. Aorta
D. Pulmonary artery
Correct Answer: A. Superior and inferior vena cava
Rationale: Deoxygenated blood returns from body to right atrium.
4. The valve between the left atrium and left ventricle is the:
A. Bicuspid (mitral) valve
B. Tricuspid valve
C. Aortic valve
D. Pulmonary valve
Correct Answer: A. Bicuspid (mitral) valve
Rationale: Prevents backflow of blood into left atrium.
5. The valve between the right atrium and right ventricle is the:
A. Tricuspid valve
B. Bicuspid valve
C. Pulmonary valve
D. Aortic valve
Correct Answer: A. Tricuspid valve
Rationale: Prevents backflow into right atrium.
,6. The semilunar valve between the right ventricle and pulmonary
artery is:
A. Pulmonary valve
B. Aortic valve
C. Tricuspid valve
D. Bicuspid valve
Correct Answer: A. Pulmonary valve
Rationale: Prevents backflow into right ventricle during diastole.
7. The semilunar valve between the left ventricle and aorta is:
A. Aortic valve
B. Pulmonary valve
C. Tricuspid valve
D. Bicuspid valve
Correct Answer: A. Aortic valve
Rationale: Prevents backflow into left ventricle.
8. The “pacemaker” of the heart is the:
A. Sinoatrial (SA) node
B. Atrioventricular (AV) node
C. Purkinje fibers
D. Bundle of His
Correct Answer: A. Sinoatrial (SA) node
Rationale: Initiates electrical impulses that set heart rate.
, 9. The AV node is responsible for:
A. Delaying the impulse to allow ventricular filling
B. Initiating heartbeat
C. Contracting atria
D. Pumping blood to lungs
Correct Answer: A. Delaying the impulse to allow ventricular
filling
Rationale: Ensures atria empty before ventricles contract.
10. Purkinje fibers:
A. Conduct impulses rapidly through ventricles
B. Initiate atrial contraction
C. Pump blood
D. Control SA node
Correct Answer: A. Conduct impulses rapidly through ventricles
Rationale: Stimulates coordinated ventricular contraction.
11. Cardiac output is calculated as:
A. Heart rate × stroke volume
B. Stroke volume ÷ heart rate
C. Blood pressure × heart rate
D. Heart rate only
Correct Answer: A. Heart rate × stroke volume
Rationale: Total blood pumped per minute.
