A&P II Spring 2012 Name ________________________________________________Russo

Matching Questions

Figure 18.1

Using Figure 18.1, match the following:1) Purkinje fibers.Answer: EDiff: 1 Page Ref: 677; Fig. 18.14

2) SA node.Answer: ADiff: 1 Page Ref: 677; Fig. 18.14

3) AV bundle.Answer: CDiff: 1 Page Ref: 677; Fig. 18.14

4) AV node.Answer: BDiff: 1 Page Ref: 677; Fig. 18.14

5) Bundle branches.Answer: DDiff: 1 Page Ref: 677; Fig. 18.14

Figure 18.2

Using Figure 18.2, match the following:6) Atrial depolarization.Answer: ADiff: 1 Page Ref: 679; Fig. 18.16

7) Point after which pressure begins to rise in the aorta.Answer: DDiff: 2 Page Ref: 679; Fig. 18.16

8) Ventricular repolarization.Answer: EDiff: 2 Page Ref: 679; Fig. 18.16

9) Point that represents the "dup" sound made by the heart.Answer: EDiff: 3 Page Ref: 679; Fig. 18.16

Figure 18.3

Using Figure 18.3, match the following:10) Ventricular fibrillation.Answer: DDiff: 2 Page Ref: 681; Fig. 18.18

11) Second-degree heart block.Answer: CDiff: 3 Page Ref: 681; Fig. 18.18

12) Junctional rhythm.Answer: BDiff: 3 Page Ref: 681; Fig. 18.18

13) Normal sinus rhythm.Answer: ADiff: 3 Page Ref: 681; Fig. 18.18

Match the following:

A) Pulmonary valvesB) Aortic valveC) Mitral valve

D) Tricuspid valve

14) Prevents backflow into the left ventricle.Diff: 1 Page Ref: 670

15) Prevents backflow into the right atrium.Diff: 1 Page Ref: 670

16) Prevents backflow into the left atrium.Diff: 1 Page Ref: 670

17) Prevents backflow into the right ventricle.Diff: 1 Page Ref: 670

18) AV valve with two flaps.Diff: 1 Page Ref: 670

19) AV valve with three flaps.Diff: 1 Page Ref: 670

Answers: 14) B 15) D 16) C 17) A 18) C 19) D

T/F

20) Tissues damaged by myocardial infarction are replaced by connective tissue.Answer: TRUEDiff: 1 Page Ref: 670, 687

21) The left side of the heart pumps the same volume of blood as the right.Answer: TRUEDiff: 1 Page Ref: 668

22) Chronic release of excess thyroxine can cause a sustained increase in heart rate and a weakened heart.Answer: TRUEDiff: 1 Page Ref: 686

23) Arterial blood supply to heart muscle is continuous whether the heart is in systole or diastole.Answer: FALSEDiff: 2 Page Ref: 669-670

24) The "lub" sounds of the heart are valuable in diagnosis because they provide information about the function of the heart's pulmonary and aortic valves.Answer: FALSEDiff: 2 Page Ref: 681

25) Autonomic regulation of heart rate is via two reflex centers found in the pons.Answer: FALSEDiff: 2 Page Ref: 685

Multiple Choice

26) The left ventricular wall of the heart is thicker than the right wall in order to ________.A) accommodate a greater volume of bloodB) expand the thoracic cage during diastoleC) pump blood with greater pressureD) pump blood through a smaller valveAnswer: CDiff: 2 Page Ref: 668

27) Damage to the ________ is referred to as heart block.A) SA nodeB) AV valvesC) AV bundleD) AV nodeAnswer: DDiff: 1 Page Ref: 679

28) The P wave of a normal electrocardiogram indicates ________.A) ventricular repolarizationB) ventricular depolarizationC) atrial repolarizationD) atrial depolarizationAnswer: DDiff: 1 Page Ref: 679

29) Blood within the pulmonary veins returns to the ________.A) right atriumB) left atriumC) right ventricleD) left ventricleAnswer: BDiff: 1 Page Ref: 668

30) Small muscle masses attached to the chordae tendineae are the ________.A) trabeculae carneaeB) pectinate musclesC) papillary musclesD) venae cavae

Answer: CDiff: 1 Page Ref: 670

31) Compared to skeletal muscle, cardiac muscle ________.A) has gap junctions that allow it to act as a functional syncytiumB) lacks striationsC) has more nuclei per cellD) cells are larger than skeletal muscle cellsAnswer: ADiff: 2 Page Ref: 672-673

32) During the period of ventricular filling ________.A) pressure in the heart is at its peakB) blood flows passively through the atria and the open AV valves into the ventriclesC) the atria remain in diastoleD) it is represented by the P wave on the ECGAnswer: BDiff: 2 Page Ref: 682

33) The second heart sound is heard during which phase of the cardiac cycle?A) isovolumetric relaxationB) isovolumetric contractionC) ventricular ejectionD) ventricular fillingAnswer: ADiff: 3 Page Ref: 682; Fig. 18.20

Matching

Figure 19.1

Using Figure 19.1, match the following:34) Sinusoid capillary.Answer: CDiff: 1 Page Ref: 699; Fig. 19.3

35) Capillary found in endocrine organs that allows hormones to gain rapid entry into the blood.Answer: BDiff: 2 Page Ref: 699; Fig. 19.3

36) Capillary with intercellular clefts found in the skin and muscles.Answer: ADiff: 2 Page Ref: 699; Fig. 19.3

37) Capillary that may contain Kupffer cells in the lining.Answer: C

Diff: 2 Page Ref: 699; Fig. 19.3

38) Capillary found where active capillary absorption of filtrate occurs.Answer: BDiff: 2 Page Ref: 699; Fig. 19.3

Match the following:

A) ArteriolesB) CapillariesC) Large veinsD) Large arteries

39) Site where resistance to blood flow is greatest.Diff: 1 Page Ref: 704

40) Site where exchanges of food and gases are made.Diff: 1 Page Ref: 698

41) Site where blood pressure is lowest.Diff: 1 Page Ref: 705-706

42) Site where the blood volume is greatest.Diff: 2 Page Ref: 701

43) Site where the blood pressure is greatest.Diff: 2 Page Ref: 705

44) Site that is the major determinant of peripheral resistance.Diff: 2 Page Ref: 698

Answers: 39) A 40) B 41) C 42) C 43) D 44) A

T/F

45) The outermost layer of a blood vessel is the tunica intima.Answer: FALSEDiff: 1 Page Ref: 695

46) The thick-walled arteries close to the heart are called muscular arteries.Answer: FALSEDiff: 1 Page Ref: 698

47) The carotid sinus reflex protects the blood supply to the brain, whereas the aortic reflex is more concerned with maintaining adequate blood pressure in the systemic circuit as a whole.

Answer: TRUEDiff: 2 Page Ref: 708

48) Arteries supplying the same territory are often merged with one another, forming arterial anastomoses.Answer: TRUEDiff: 2 Page Ref: 701

49) An increase in blood viscosity will cause an increase in peripheral resistance.Answer: TRUEDiff: 2 Page Ref: 704

50) Which of the following is not one of the three main factors influencing blood pressure?A) cardiac outputB) peripheral resistanceC) emotional stateD) blood volumeAnswer: CDiff: 2 Page Ref: 706

51) Which tunic of an artery contains endothelium?A) tunica intimaB) tunica mediaC) tunica externaD) basement membraneAnswer: ADiff: 1 Page Ref: 695

52) Permitting the exchange of nutrients and gases between the blood and tissue cells is the primary function of ________.A) arteriolesB) arteriesC) veinsD) capillariesAnswer: DDiff: 1 Page Ref: 698

53) Which of the choices below explains why the arterioles are known as resistance vessels?A) Their prime function is the exchange of nutrients and wastes between the blood and tissue cells.B) The contraction and relaxation of the smooth muscle in their walls can change their diameter.C) They distribute blood to various parts of the body.D) They contain a large quantity of elastic tissue.

Answer: BDiff: 2 Page Ref: 698

54) Which of the following is true about veins?A) Venous valves are formed from the tunica media.B) Up to 35% of total body blood is in venous circulation at any given time.C) Veins have a small lumen in relation to the thickness of the vessel wall.D) Veins are called capacitance vessels or blood reservoirs.Answer: DDiff: 2 Page Ref: 700-701

55) Peripheral resistance ________.A) decreases with increasing length of the blood vesselB) increases as blood vessel diameter increasesC) increases as blood viscosity increasesD) is not a major factor in blood pressure in healthy individualsAnswer: CDiff: 2 Page Ref: 704

57) Which of the following chemicals does not help regulate blood pressure?A) ADHB) atrial natriuretic peptideC) angiotensin IID) nitric acidAnswer: DDiff: 1 Page Ref: 709

58) Which statement best describes arteries?A) All carry oxygenated blood to the heart.B) All carry blood away from the heart.C) All contain valves to prevent the backflow of blood.D) Only large arteries are lined with endothelium.Answer: BDiff: 1 Page Ref: 695

59) Which of the following do not influence arterial pulse rate?A) activityB) postural changesC) emotionsD) the vessel selected to palpateAnswer: DDiff: 2 Page Ref: 711

60) The short-term controls of blood pressure, mediated by the nervous system and bloodborne chemicals, primarily operate via all but which of the following?A) reflex arcs involving baroreceptors

B) altering blood volumeC) reflex arcs associated with vasomotor fibersD) chemoreceptorsAnswer: BDiff: 1 Page Ref: 706-709

Xtra Credit (1 point each)

1) The time of day most hazardous for heart attacks is ________.A) morningB) noontimeC) eveningD) during sleepAnswer: ADiff: 3 Page Ref: 685-686

2) If we were able to artificially alter the membrane permeability of pacemaker cells so that sodium influx is more rapid, ________.A) threshold is reached more quickly and heart rate would increase B) potassium channels compensate and no change in heart rate would occurC) heart rate would decrease, but blood pressure would rise due to the excess sodium presentD) tetanic contraction would occur due to the short absolute refractory period of cardiac muscleAnswer: ADiff: 3 Page Ref: 676-677

3) Select the correct statement about cardiac output.A) A slow heart rate increases end diastolic volume, stroke volume, and force of contraction.B) Decreased venous return will result in increased end diastolic volume.C) If a semilunar valve were partially obstructed, the end systolic volume in the affected ventricle would be decreased.D) Stroke volume increases if end diastolic volume decreases.Answer: ADiff: 3 Page Ref: 682-684

4) Which of the following would not result in the dilation of the feeder arterioles and opening of the precapillary sphincters in systemic capillary beds?A) a decrease in local tissue oxygen contentB) an increase in local tissue carbon dioxideC) a local increase in histamineD) a local increase in pH Answer: C

Diff: 2 Page Ref: 706-710

5) Arteriole blood pressure increases in response to all but which of the following?A) increasing stroke volumeB) increasing heart rateC) rising blood volumeD) falling blood volumeE) all of theseAnswer: DDiff: 2 Page Ref: 705