WGU D313 Anatomy and Physiology 2
Practice Test V2 (Latest
Update) Questions & Answers | Grade A |
100% Correct
WGU D313 - Anatomy & Physiology 2 Practice Test
Cardiovascular System
1. What is the primary function of the sinoatrial (SA) node?
A. To delay the impulse to allow the ventricles to fill
B. To act as the "pacemaker" and initiate the heartbeat
C. To transmit the impulse to the Purkinje fibers
D. To prevent backflow of blood into the atria
2. The "lub" sound of the "lub-dub" heartbeat is caused by:
A. The closure of the semilunar valves
B. The opening of the AV valves
C. The closure of the atrioventricular (AV) valves
D. Ventricular contraction only
3. Which chamber of the heart pumps oxygenated blood into the
systemic circuit via the aorta?
A. Right Atrium
B. Right Ventricle
C. Left Atrium
D. Left Ventricle
4. The QRS complex on an electrocardiogram represents:
A. Atrial depolarization
B. Atrial repolarization
,C. Ventricular depolarization
D. Ventricular repolarization
5. Which blood vessels are primarily responsible for regulating
blood pressure and directing blood flow?
A. Arteries
B. Veins
C. Arterioles
D. Venules
6. The Frank-Starling Law of the Heart states that:
A. The heart rate is determined by the vagus nerve.
B. The longer the myocardial fibers are stretched, the stronger the force
of contraction.
C. Blood flow is inversely proportional to vessel radius.
D. Cardiac output is the product of heart rate and stroke volume.
7. What is the correct path of an electrical impulse through the
heart's conduction system?
A. SA Node -> AV Node -> Bundle of His -> Purkinje Fibers
B. AV Node -> SA Node -> Purkinje Fibers -> Bundle of His
C. Purkinje Fibers -> AV Node -> SA Node -> Bundle of His
D. Bundle of His -> SA Node -> AV Node -> Purkinje Fibers
8. Baroreceptors, which monitor blood pressure, are located in the:
A. Heart and lungs
B. Carotid sinuses and aortic arch
C. Renal arteries and veins
D. Circle of Willis
9. Which formed element is responsible for blood clotting?
A. Erythrocytes
, B. Leukocytes
C. Thrombocytes (Platelets)
D. Lymphocytes
10. A person with type AB blood has:
A. A and B antigens on their red blood cells and both anti-A and anti-B
antibodies in their plasma.
B. A and B antigens on their red blood cells and no anti-A or anti-B
antibodies in their plasma.
C. No A or B antigens on their red blood cells and both anti-A and anti-B
antibodies in their plasma.
D. No A or B antigens on their red blood cells and no anti-A or anti-B
antibodies in their plasma.
Lymphatic & Immune System
11. What is the primary function of the lymphatic system?
A. To pump blood to the lymph nodes
B. To produce new red blood cells
C. To return interstitial fluid to the bloodstream and provide immune
defense
D. To digest fats and fat-soluble vitamins
12. T-lymphocytes (T-cells) mature and become immunocompetent
in the:
A. Bone Marrow
B. Spleen
C. Thymus
D. Liver
Practice Test V2 (Latest
Update) Questions & Answers | Grade A |
100% Correct
WGU D313 - Anatomy & Physiology 2 Practice Test
Cardiovascular System
1. What is the primary function of the sinoatrial (SA) node?
A. To delay the impulse to allow the ventricles to fill
B. To act as the "pacemaker" and initiate the heartbeat
C. To transmit the impulse to the Purkinje fibers
D. To prevent backflow of blood into the atria
2. The "lub" sound of the "lub-dub" heartbeat is caused by:
A. The closure of the semilunar valves
B. The opening of the AV valves
C. The closure of the atrioventricular (AV) valves
D. Ventricular contraction only
3. Which chamber of the heart pumps oxygenated blood into the
systemic circuit via the aorta?
A. Right Atrium
B. Right Ventricle
C. Left Atrium
D. Left Ventricle
4. The QRS complex on an electrocardiogram represents:
A. Atrial depolarization
B. Atrial repolarization
,C. Ventricular depolarization
D. Ventricular repolarization
5. Which blood vessels are primarily responsible for regulating
blood pressure and directing blood flow?
A. Arteries
B. Veins
C. Arterioles
D. Venules
6. The Frank-Starling Law of the Heart states that:
A. The heart rate is determined by the vagus nerve.
B. The longer the myocardial fibers are stretched, the stronger the force
of contraction.
C. Blood flow is inversely proportional to vessel radius.
D. Cardiac output is the product of heart rate and stroke volume.
7. What is the correct path of an electrical impulse through the
heart's conduction system?
A. SA Node -> AV Node -> Bundle of His -> Purkinje Fibers
B. AV Node -> SA Node -> Purkinje Fibers -> Bundle of His
C. Purkinje Fibers -> AV Node -> SA Node -> Bundle of His
D. Bundle of His -> SA Node -> AV Node -> Purkinje Fibers
8. Baroreceptors, which monitor blood pressure, are located in the:
A. Heart and lungs
B. Carotid sinuses and aortic arch
C. Renal arteries and veins
D. Circle of Willis
9. Which formed element is responsible for blood clotting?
A. Erythrocytes
, B. Leukocytes
C. Thrombocytes (Platelets)
D. Lymphocytes
10. A person with type AB blood has:
A. A and B antigens on their red blood cells and both anti-A and anti-B
antibodies in their plasma.
B. A and B antigens on their red blood cells and no anti-A or anti-B
antibodies in their plasma.
C. No A or B antigens on their red blood cells and both anti-A and anti-B
antibodies in their plasma.
D. No A or B antigens on their red blood cells and no anti-A or anti-B
antibodies in their plasma.
Lymphatic & Immune System
11. What is the primary function of the lymphatic system?
A. To pump blood to the lymph nodes
B. To produce new red blood cells
C. To return interstitial fluid to the bloodstream and provide immune
defense
D. To digest fats and fat-soluble vitamins
12. T-lymphocytes (T-cells) mature and become immunocompetent
in the:
A. Bone Marrow
B. Spleen
C. Thymus
D. Liver
