Blood Vessels and Circulation

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ambirc
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139214
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Blood Vessels and Circulation
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2012-03-02 23:14:39
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Blood Vessels Circulation
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Blood Vessels and Circulation
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  1. The abdominal aorta terminates by dividing into the

    A. Femoral arteries
    B. Inferior and superior mesenteric arteries
    C. Internal iliac arteries
    D. Common iliac arteries
    E. External iliac arteries
    D. Common iliac arteries
    (this multiple choice question has been scrambled)
  2. The artery which is the continuation of the femoral
    artery after itapsses to the posterior side of the thigh is the:

    A. Posterior femoral
    B. Laterl geniculate
    C. Popliteal
    D. Peroneal
    E. Posterior tibial
    C. Popliteal
    (this multiple choice question has been scrambled)
  3. The venous anastomoses are more common than arterial anastomoses
    True
  4. Veins contain thick layers of smooth muscle and play a major
    role in regulating systemic blood pressure
    False
  5. Circulatory shock can occur when output from the
    sympathetic nervous system is suddenly inhibited
    True
  6. The smooth muscle in the walls of blood vessels is found
    in which of the following layers

    A. Tunica adventitia
    B. Tunica intima
    C. Tunica media
    D. All of the above
    C. Tunica media
    (this multiple choice question has been scrambled)
  7. There is not enough blood in the body to fill the entire
    vascular system at once. About how much of the body’s capillaries is closed at
    any given time?

    A. Three-fourths
    B. One-forth
    C. One-third
    D. One-half
    A. Three-fourths
    (this multiple choice question has been scrambled)
  8. Veins have lower blood pressure than arteries, averaging
    about 80mm HG, in contrast to the 120 mg Hg seen in large arteries during systole
    True
  9. Arteries

    A. Have a thicker wall than veins
    B. May contain one-way valves
    C. Contain a lower blood pressure than veins
    D. Depend upon the massaging action of the skeletal muscle for continuous blood flow
    A. Have a thicker wall than veins
    (this multiple choice question has been scrambled)
  10. Diastolic pressure is the peak arterial BP reached during
    ventricular contractions and systolic pressure is the minimum arterial BP between heartbeats
    A. 120
    B. 130
    C. 150
    D. 110
    D. 110
    (this multiple choice question has been scrambled)
  11. Pulse pressure equals the systolic pressure minus the diastolic pressure. Mean arterial blood pressure (MABP) equals the sum of the diastolic pressure plus 1/3 of the pulse pressure. What is the MABP in an individual with a blood pressure of 15/90.

    A. 130/70
    B. 140/90
    C. 120/80
    D. 140/70
    B. 140/90
    (this multiple choice question has been scrambled)
  12. Because of their ability to expand during systole and recoil
    during diastole, the elastic arteries “smooth out” changes in blood pressure.
    True
  13. A three-fold increase in the radius of a blood vessel
    produces an 81-fold increase in blood flow
    True
  14. The rising temperature of active muscles promotes
    vasodilation
    True
  15. The baroreceptors

    A. Transmit signels continually to the brainstem
    B. Increase their signaling rate when the blood pressure rises
    C. Excite the vagal nerves to the heart and dilate the arteries to lower BP
    D. All of the above
    D. All of the above
  16. Reduced capillary reabsorption of fluid can lead to
    edema. Which of the following does not contribute to edema?

    A. Extreme muscular activity
    B. Liver disease
    C. Kidney diseases
    D. Dietary protein deficiency
    A. Extreme muscular activity
    (this multiple choice question has been scrambled)
  17. Which of the following types of low venous return (LVR)
    shock occurs when released histamine causes extensive generalized vasodilation

    A. Anaphylactic shock
    B. Sepitic shock
    C. Hypovolemic shock
    D. Neurogenic shock
    A. Anaphylactic shock
    (this multiple choice question has been scrambled)
  18. Which of the following is not a branch of the abdominal
    aorta

    A. Common iliac arteries
    B. Renal arteries
    C. Intercostal arteries
    D. Celiac artery
    C. Intercostal arteries
    (this multiple choice question has been scrambled)
  19. In contrast to the superficial veins run parallel to the arteries
    and have similar names
    True
  20. Blood vessels that connect two capillary network are
    called

    A. Arterial system
    B. Portal systems
    C. Anastomoses
    D. Capillary plexes
    E. Veins
    B. Portal systems
    (this multiple choice question has been scrambled)
  21. The tissue layer of a vessel that differs most in
    thickness when comparing arteries and veins is the

    A. Tunica interna
    B. Tunica externa
    C. Tunica media
    D. Tunica adventitia
    E. Tunica intima
    C. Tunica media
    (this multiple choice question has been scrambled)
  22. These have the most control of perfusion of a capillary
    bed.

    A. Precapillary sphincters
    B. Elastic artieris
    C. Muscular artieries
    D. Fenestrated capillaries
    E. Sinusoids
    A. Precapillary sphincters
    (this multiple choice question has been scrambled)
  23. These structures present in medium-sized veins, prevent
    backflow of blood

    A. Fenestrations
    B. Skeletal muscles
    C. Venous tunica
    D. Venous valves
    E. Precapillary sphincters
    D. Venous valves
    (this multiple choice question has been scrambled)
  24. All of these factors may increase peripheral resistance
    except

    A. Polycythemia
    B. Blood viscosity
    C. Blood type
    D. Radius of vessel
    E. Length of vessels
    C. Blood type
    (this multiple choice question has been scrambled)
  25. Vasodilation may be brought about by:

    A. Lack of nitric oxide
    B. Histamine
    C. Angiotensin II
    D. Low blood CO2
    E. High blood oxygen
    B. Histamine
    (this multiple choice question has been scrambled)
  26. Venous pooling in a soldier standing at attention for a
    prolonged time occurs mainly when this mechanism fails

    A. Respiratory pump
    B. Pressure gradient
    C. Gravity
    D. Skeletal muscle pump
    E. Cardiac suction
    D. Skeletal muscle pump
    (this multiple choice question has been scrambled)
  27. Blood flowing from the Dural sinus will eventually go
    through this vein immediately before continuing into the superior vena cava

    A. Internal jugular
    B. Brachiocephalic
    C. Subclavian
    D. Aorta
    E. Vertebral
    B. Brachiocephalic
    (this multiple choice question has been scrambled)
  28. The right common carotid receives its blood from this
    artery directly

    A. Right subclavian
    B. Brachiocephalic
    C. Celiac trunk
    D. Aorta
    E. Right cerebral
    B. Brachiocephalic
    (this multiple choice question has been scrambled)
  29. A unique venous system, called the ___________ carries
    blood directly from the intestines to the liver for processing rather than directly into the inferior vena cava
    A. Saphenous vein
    B. Superior mesenteric vein
    C. Hepatic portal system
    D. Gonadal vein
    C. Hepatic portal system
    (this multiple choice question has been scrambled)
  30. A heartbeat of less than 60 beats per minute is called
    _____

    A. Tachycardia

    B. Bradycardia

    C. Arrhythmia

    D. Fibullartion
    B. Bradycardia
  31. What are three factors which help venous blood return to
    the heart?
    A. Skeletal muscle contraction

    B. Respiratory movement

    C. Vein vasoconstriction
  32. The higher the tissue’s rate of metabolism, the more capillaries
    are in the tissue.
    True
  33. The pressure within the right atrium is called
    Central venous pressure
  34. The volume of blood discharged from the ventricle is the
    ______
    • Stroke
    • volume ~70ml
  35. The force that the blood exerts against the inner walls
    of the blood vessels is ____________
    Blood pressure
  36. What is Vasodilation
    Increased diameter of a blood vessel
  37. Force produced by the friction between the blood and the walls
    of the blood vessels is
    Peripheral resistance
  38. When blood vessels are the
    Capillaries
  39. What is the pace maker
    SA node
  40. The ____ of an artery wall is largely composed of
    connective tissue
    Tunica external
  41. Relaxation of the smooth muscle in a blood vessel being
    in a condition of _______.
    Vasodilation
  42. Filtration results when substance are forced through
    capillary walls by ______Pressure
    Hydrostatic
  43. The presence of plasma proteins in blood increases the
    _____ pressure as compared to tissue fluids
    Osmotic
  44. There exists a 1 mmm Hg pressure differential between
    blood flow from the pulimonary artery and the returning blood flow carried by the pulmonary veins. What mechanism prevents the alveal sacs of the lungs from filling with fluid?
    Osmotic pressure
  45. Most of the average adult heart lies to the left of the
    midline.
    True

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