NU 110 – Exam 2 Study Guide | Integrated
Human Sciences Latest Edition.
1. During ventricular contraction, the AV valves close to:
A. speed up the action potential as it moves through the conduction system
B. prevent the backflow of blood from the ventricles to the atria <<Answer:
C. enhance drainage of the coronary veins
D. push blood into the venae cava
2. The purpose of the left heart is to:
A. receive oxygenated blood and pump it to all organs of the body <<Answer:
B. pump blood into the pulmonary artery
C. pump blood to the lungs for oxygenation
D. receive blood from the venae cava
3. Next step in the blood flow pathway: Pulmonary trunk → pulmonary arteries → pulmonary
capillaries → pulmonary veins → ?
A. pulmonic semilunar valve
B. left atrium <<Answer:
C. right atrium
D. aorta
4. The pacemaker of the heart is:
A. SA node <<Answer:
B. AV node
C. bundle of His
D. Purkinje fibers
5. Cardiac impulse slows through the AV node to allow:
A. time for the ventricles to fill during atrial contraction <<Answer:
B. blood pressure maintenance
C. slower blood flow
D. automaticity
6. During ventricular systole:
A. atria contract and pump blood into the ventricles
Page 1 of 19
,NU 110 – Exam 2 Study Guide | Integrated
Human Sciences Latest Edition.
B. AV valves are open
C. ventricles contract and eject blood <<Answer:
D. semilunar valves remain closed
7. Sympathetic nerve stimulation results in:
A. increased myocardial force of contraction <<Answer:
B. peripheral vasodilation
C. decreased heart rate
D. all of the above
8. Spongy bone can be found in:
A. Haversian system
B. shafts of long bones
C. epiphyses of long bones <<Answer:
D. tightly packed cells
9. The axial skeleton includes:
A. bones of the cranium <<Answer:
B. pelvic girdle
C. more bones than appendicular skeleton
D. epiphyseal discs
10. The nerve that innervates the diaphragm is:
A. intercostal nerve
B. sciatic nerve
C. phrenic nerve <<Answer:
D. cranial nerve XI
11. Surfactants are found in the:
A. pulmonary capillaries
B. trachea
C. alveoli <<Answer:
D. intrapleural space
Page 2 of 19
, NU 110 – Exam 2 Study Guide | Integrated
Human Sciences Latest Edition.
12. Central chemoreceptors are sensitive primarily to:
A. oxygen
B. carbon dioxide and [H+] <<Answer:
C. hemoglobin
D. potassium
13. Epiglottis, glottis, and vocal cords:
A. vibrate on exhalation
B. protect the airway <<Answer:
C. are larynx structures
D. are composed of tough cartilage
14. Hypoventilation is most likely to:
A. increase blood pH
B. induce acidosis <<Answer:
C. induce alkalosis
D. cause hypocapnea
15. First event in inspiration:
A. diaphragm contracts
B. air moves into lungs
C. phrenic nerve fires
D. inspiratory neurons in the medulla fire <<Answer:
16. Mitral and bicuspid valves:
A. are semilunar valves
B. located on the right side
C. "see" only unoxygenated blood
D. are the same valve <<Answer:
Page 3 of 19
Human Sciences Latest Edition.
1. During ventricular contraction, the AV valves close to:
A. speed up the action potential as it moves through the conduction system
B. prevent the backflow of blood from the ventricles to the atria <<Answer:
C. enhance drainage of the coronary veins
D. push blood into the venae cava
2. The purpose of the left heart is to:
A. receive oxygenated blood and pump it to all organs of the body <<Answer:
B. pump blood into the pulmonary artery
C. pump blood to the lungs for oxygenation
D. receive blood from the venae cava
3. Next step in the blood flow pathway: Pulmonary trunk → pulmonary arteries → pulmonary
capillaries → pulmonary veins → ?
A. pulmonic semilunar valve
B. left atrium <<Answer:
C. right atrium
D. aorta
4. The pacemaker of the heart is:
A. SA node <<Answer:
B. AV node
C. bundle of His
D. Purkinje fibers
5. Cardiac impulse slows through the AV node to allow:
A. time for the ventricles to fill during atrial contraction <<Answer:
B. blood pressure maintenance
C. slower blood flow
D. automaticity
6. During ventricular systole:
A. atria contract and pump blood into the ventricles
Page 1 of 19
,NU 110 – Exam 2 Study Guide | Integrated
Human Sciences Latest Edition.
B. AV valves are open
C. ventricles contract and eject blood <<Answer:
D. semilunar valves remain closed
7. Sympathetic nerve stimulation results in:
A. increased myocardial force of contraction <<Answer:
B. peripheral vasodilation
C. decreased heart rate
D. all of the above
8. Spongy bone can be found in:
A. Haversian system
B. shafts of long bones
C. epiphyses of long bones <<Answer:
D. tightly packed cells
9. The axial skeleton includes:
A. bones of the cranium <<Answer:
B. pelvic girdle
C. more bones than appendicular skeleton
D. epiphyseal discs
10. The nerve that innervates the diaphragm is:
A. intercostal nerve
B. sciatic nerve
C. phrenic nerve <<Answer:
D. cranial nerve XI
11. Surfactants are found in the:
A. pulmonary capillaries
B. trachea
C. alveoli <<Answer:
D. intrapleural space
Page 2 of 19
, NU 110 – Exam 2 Study Guide | Integrated
Human Sciences Latest Edition.
12. Central chemoreceptors are sensitive primarily to:
A. oxygen
B. carbon dioxide and [H+] <<Answer:
C. hemoglobin
D. potassium
13. Epiglottis, glottis, and vocal cords:
A. vibrate on exhalation
B. protect the airway <<Answer:
C. are larynx structures
D. are composed of tough cartilage
14. Hypoventilation is most likely to:
A. increase blood pH
B. induce acidosis <<Answer:
C. induce alkalosis
D. cause hypocapnea
15. First event in inspiration:
A. diaphragm contracts
B. air moves into lungs
C. phrenic nerve fires
D. inspiratory neurons in the medulla fire <<Answer:
16. Mitral and bicuspid valves:
A. are semilunar valves
B. located on the right side
C. "see" only unoxygenated blood
D. are the same valve <<Answer:
Page 3 of 19
