Bio 377- Exam 2

32 Questions  I  By Kara.dubiel
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Biology Quizzes & Trivia

  
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  • 1. 
    Given that the net filtration of fluid out of teh capillaries averages about 3 liters per day, how is blood volume maintained in light of this apparent fluid loss?
    • A. 

      Fluid is returned to the blood as lymphatic fluid by the lympatic system

    • B. 

      The net filtration is equally balanced by absorption

    • C. 

      Gravity moves the fluid to the lowest point in the body, where the fluid is absorbed

    • D. 

      While fluid moves out across the capillary, it tneds to move inward across veins

    • E. 

      The kidneys are involved in the reabsorption of the remaining fluid


  • 2. 
    What blood vessel type has the greatest overall cross sectional area?
    • A. 

      Arteries

    • B. 

      Arterioles

    • C. 

      Capillaries

    • D. 

      Venules

    • E. 

      Veins


  • 3. 
    If a blood vessel contricted to a fourth of its original diameter, and assuming constant pressure, the flow rate of blood would be reduced to about _______ of its original flow rate?
    • A. 

      1/4

    • B. 

      1/8

    • C. 

      1/16

    • D. 

      1/64

    • E. 

      1/256


  • 4. 
    Which of the following substances is secreted by endothelial cells and causes vasodilation
    • A. 

      Oxygen

    • B. 

      Nitric oxide

    • C. 

      Adenosine

    • D. 

      Bradykinin

    • E. 

      Endothelin-1


  • 5. 
    An increases in blood flow to metabolically active tissue will cause an increase __________
    • A. 

      Capillary diameter

    • B. 

      Tissue hypoxia

    • C. 

      Arteriolar resistance

    • D. 

      Oxygen delivery

    • E. 

      Blood pressure


  • 6. 
    If ESV=130 mls, heart rate 100 bpm, systolic BP=120 mm Hg, diastolic BP=80 mm Hg, EDV= 70 mls, then C.0=______ liters/min
    • A. 

      About 6

    • B. 

      About 10

    • C. 

      About 15

    • D. 

      About 20

    • E. 

      Cannot be estimated ( insufficient information)


  • 7. 
    Which of the following is true of teh ventricular filling phase of the cardiac cycle?
    • A. 

      Ventricular filling occurs during systole

    • B. 

      All valves in the heart are open

    • C. 

      Ventricular pressure is less than aortic pressure

    • D. 

      Ventricular pressure is greater than atrial pressure

    • E. 

      Ventricular pressure is decreasing


  • 8. 
    If damage to the AV node slowed down conductin through this tisssure, what would be obeserved on an ECG?
    • A. 

      A larger P wave

    • B. 

      A longer P wave

    • C. 

      A longer PR interval

    • D. 

      A wider QRS complex

    • E. 

      And inverted T wave


  • 9. 
    This heart murmur is heard faintly during systole. It also can occur during a prolapse during which a valve does not close properly. The name of this heart murmur is_________
    • A. 

      Mitral regurgitation

    • B. 

      Aortic regurgitation

    • C. 

      Mitral stenosis

    • D. 

      Aortic stenosis

    • E. 

      Patent ductus arteriosus


  • 10. 
    The __________ carries deoxygeated blood to the lungs.
    • A. 

      Inferior vena cava

    • B. 

      Aorta

    • C. 

      Pulmonary vein

    • D. 

      Pulmonary artery

    • E. 

      Superior vena cava


  • 11. 
    Chordae tendinae are strands of cnnective tissue extending from _______ to __________
    • A. 

      Atria: ventricle

    • B. 

      Inferior vena cava: right atrium

    • C. 

      Aortic valves: ventriuclar myocardium

    • D. 

      Semilunar valves: atrial myocardium

    • E. 

      Av valves: papillary muscle


  • 12. 
    What is the most common lethal inherited disease listed here?
    • A. 

      Tuberculosis

    • B. 

      Cystic fibrosis

    • C. 

      Pleuropulmonary neolasm

    • D. 

      Emphysema

    • E. 

      Pneumonia


  • 13. 
    Respiratory acidosis will result from a __________
    • A. 

      Increase in blood CO2 concentration

    • B. 

      Decrease in blood CO2 concentration

    • C. 

      Increase in blood bicorbonate

    • D. 

      Decrease in blood bicarbonate

    • E. 

      Increase in carbon monoxide


  • 14. 
    WHICH of the following will cause a shift in the hemoglobin- oxygen dissociating curve to the right?
    • A. 

      Increase in temperature

    • B. 

      Increase in plasma pH

    • C. 

      Increase in 2,3-DPG

    • D. 

      Both increase in temperature and increase in 2,3-dpg

    • E. 

      All of these


  • 15. 
    Hyperventilation would lead to a __________ within the systemix arteries
    • A. 

      Selective decrease in P02

    • B. 

      Selective increase in P02

    • C. 

      Selective decrease in Pco2

    • D. 

      Increase in P02 and decrease in Pco2

    • E. 

      Decrease in Po2 and increae in Pco2


  • 16. 
    Pulmonary edema describes a condition where the upatake of oxygen and unloading of carbon dioxide is reduced as a consequence of a __________
    • A. 

      Increase in the parital pressure of carbon dioxide in the blood

    • B. 

      Thickening of the diffusion barrier

    • C. 

      Decrease in the partial pressure of oxygen in the alveolus

    • D. 

      Both increase in partial pressure of carbon dioxide in blood and thickening of diffusion barrier

    • E. 

      Both increase in Pco2 in blood decrease in P02 in the alveolus


  • 17. 
    IN regards to surfactant, all of the following are true except:
    • A. 

      it is secreted form type 1 aveolar cells

    • B. 

      A detergent that decreases surface tension

    • C. 

      It increases lung compliance

    • D. 

      It makes inspiration easier

    • E. 

      Non of the above


  • 18. 
    Vital Capacity=
    • A. 

      VT+ERV

    • B. 

      VT+IRV+ERV

    • C. 

      VT+ERV+IRV+RV

    • D. 

      VT+IRV

    • E. 

      ERV+IRV+RV


  • 19. 
    What benefit are corticosteroids in the treatment of asthma?
    • A. 

      They induce bronchodilation

    • B. 

      They induce bronchoconstriction

    • C. 

      They reduce inflammation of the airways

    • D. 

      They increase blood flow to the airways

    • E. 

      They decrease mucus secretion into the airways


  • 20. 
    WHich is the best way to correct a collapses lung after a "Trauma" Pneumothorax?
    • A. 

      Insert needle into pleural sac and allow air to escape

    • B. 

      Insert needle into chest wall and allow air to escape

    • C. 

      Insert needle into lung and apply pressure

    • D. 

      Insert tube into chest wall and apply vacuum

    • E. 

      Insert tube into pleural sac and apply vacuum


  • 21. 
    The primar inspiratory muscles are the __________
    • A. 

      External and internal intercostals

    • B. 

      Diaphragm and external intercostals

    • C. 

      Diaphragm and internal intercostals

    • D. 

      Diaphragm and the external and internal intercostals

    • E. 

      Diaphragm and abdominal muscles


  • 22. 
    The ___________ functions primarily as teh region of the lungs where teh majority o fgas exchange occurs.
    • A. 

      Respiratory bronchiole

    • B. 

      Alveolar duct

    • C. 

      Alveolus

    • D. 

      Terminal bronchiole

    • E. 

      Bronchus


  • 23. 
    What attribute of veins allos them to function as a mjor reservoir of blood volume
    • A. 

      They have a relatively large total cross sectional area

    • B. 

      They have a relatively long average length and relatively low complaince

    • C. 

      They have relatively long average length, and relatevely high compliance

    • D. 

      A and B both contribute to that important attribute of veins

    • E. 

      A and C both contribute to that important attribute of veins


  • 24. 
    As an O2 diffuses from lungs to blood, it passes thru the _____ before going thru the ________
    • A. 

      Epithelial basement membrane: fluid and surfactant layer

    • B. 

      Alveolar epithelium : epithelial basement membrane

    • C. 

      Interstitial space: fluid and surfactant layer

    • D. 

      Fluid and surfactant layer: alveolar space

    • E. 

      None of the above are liekley directions for oxygen movement of blood


  • 25. 
    Vitamin K defiiency is more closely associated with
    • A. 

      Decreased synthesis of clotting agents

    • B. 

      Deficiency of gene for specific coagulation factor

    • C. 

      Reduced levels of vWF

    • D. 

      Decreased ability to manufacture RBCs

    • E. 

      Decreased ability to limit the number of RBCs


  • 26. 
    Most of the iron used by teh body is found in
    • A. 

      Peroxidase

    • B. 

      Cytochrome oxidate

    • C. 

      The liver

    • D. 

      Hemoglobin

    • E. 

      The spleen


  • 27. 
    What type of cell is the precursor for platelets
    • A. 

      Neutrophils

    • B. 

      Erythrocytes

    • C. 

      Megakarycytes

    • D. 

      Null cells

    • E. 

      Macrophages


  • 28. 
    Erythrocytes are synthesized in the __________ under the control of ___________
    • A. 

      Liver : bilirubin

    • B. 

      Bone marrow : erythropoietin

    • C. 

      Kidney : transferrin

    • D. 

      Liver : erythropoietin

    • E. 

      Bone marrow : bilirubin


  • 29. 
    If dissolved O2 in the vein is 100 m/l, the dissolved O2 in the artery is 200m/l, the O2 used by muscles is 100 mL/min, the O2 absorbed by the lungs is 400 ml/min, then C.O would be :*
    • A. 

      About one and a third

    • B. 

      About one and two thirds

    • C. 

      About two

    • D. 

      About five

    • E. 

      About four


  • 30. 
    Given the following information, calculate the net filtration pressure : capillary hydrostatic pressure = 30mm Hg, interstitial fluid hydrostatic pressure= 5 mm Hg, capillary oncotic pressure =25 mm Hg, and interstitial fluid onctonic pressure=10 mm Hg
    • A. 

      40 mm gh, favoring filteration

    • B. 

      -40 mm Hg, favoring reabsorption

    • C. 

      10 mm Hg , favoring filteration

    • D. 

      -10 mm Hg, favoring reabsorption

    • E. 

      0 mm Hg, no net force


  • 31. 
    An incrase in the volume of blood ejected from the heart, with no change in total peripheral resistance, would __________
    • A. 

      Elevate mean arterial pressure

    • B. 

      Elevate central venous pressure

    • C. 

      Reduce mean arterial pressure

    • D. 

      Elevate pulmonary venous pressure

    • E. 

      Reduce the stretch of the aorta


  • 32. 
    The one below lease likely to lead to edema ia:*
    • A. 

      Blockage of lymph return

    • B. 

      Decreased capillary permeability

    • C. 

      Increased capillary pressure

    • D. 

      Decreased plasma proteins

    • E. 

      None of the above


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