Cardiovascular System

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Author:
Marine
ID:
302255
Filename:
Cardiovascular System
Updated:
2015-06-11 17:22:52
Tags:
physiology physio
Folders:
Physio
Description:
Cardiovascular System
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  1. Mean effective filling pressure of the heart ventricle is substantially affected by:
    a. Ventricular contractility and heart rate
    b. Blood volume
    c. Intrathoracic pressure during inspirium
    d. Ventricular systolic compliance
    • a. Ventricular contractility and heart rate
    • b. Blood volume
    • c. Intrathoracic pressure during inspirium
  2. In the condition of constant flow in the system of tubes:
    A. The lateral inside pressure decreases if the diameter of the tube is reduced
    B. The flow of liquid is independent on the diameter of the tube
    C. Reduction of the diameter of the tubs results in decrease of the rate of flow
    D. Increase of the diameter of the tube increases the rate of flow
    E. The lateral inside pressure decreases if the diameter of the tubs enlarges
    A. The lateral inside pressure decreases if the diameter of the tube is reduced
    (this multiple choice question has been scrambled)
  3. The major part of the blood volume is usually in:
    A. Large veins
    B. Pulmonary veins
    C. Heart
    D. Large arteries
    E. Capillaries
    A. Large veins
    (this multiple choice question has been scrambled)
  4. The important property of the Purkynje fibres is:
    A. Slow conductance of impulses
    B.Fast conductance of impulses
    C. Amplification of impulses
    D. They are responsible for cardiac rythmicity
    E. Tetanic contraction
    B.Fast conductance of impulses
    (this multiple choice question has been scrambled)
  5. Mean rate of blood flow in the aorta is:
    A. Smaller than in a. carotis
    B. Is increased because of turbulence
    C. Approx. 10 cm/sec
    D. Inversely related to the diameter of aorta
    E. Independent on cardiac putput
    D. Inversely related to the diameter of aorta
    (this multiple choice question has been scrambled)
  6. Peripheral vascular resistance is:
    A. Resistance to blood flow in the systemic vasculature
    B. Dilatation of the large vessels which results in the blood storge
    C. Resistance of elastic fibers in the vascular wall which prevents excessive lenghtening of the arteries
    D. Resistance of the vessels in muscles which prevents muscular fatigue
    E. Peripheral muscular contraction which prevents excessive blood flow
    A. Resistance to blood flow in the systemic vasculature
    (this multiple choice question has been scrambled)
  7. Decrease of the transmural pressure in the carotic sinus results in:
    A. Increase of peripheral vascular resistance
    B. Decrease of the cardiac contractility
    C. Dilatation of heart atria
    D. Decrease of the ventricular diastolic pressure
    E. Decrease of the cardiac putput
    A. Increase of peripheral vascular resistance
    (this multiple choice question has been scrambled)
  8. According to "myogenic mechanism" of the blood flow autoregulation the increase of the blood pressure in arterioles results in:
    A. Increase of the tissue blood flow
    B. Increase of the peripheral vascular resistance
    C. Decrease of the peripheral vascular resistance
    D. Decrease of vascular tonus
    E. Decrease of blood flow
    B. Increase of the peripheral vascular resistance
    (this multiple choice question has been scrambled)
  9. Adrenergic stimulation of the heart results in:
    A. Increase of the coronary blood flow
    B. Increase of the blood flow in the skin
    C. Generalize vasoconstriction
    D. Increase of the renal blood flow
    E. Generalized vasodilatation
    A. Increase of the coronary blood flow
    (this multiple choice question has been scrambled)
  10. The heart work almost equals:
    A. Systolic blood pressure
    B. Kinetic energy of ejected blood
    C. Heart rate
    D. Area of pressure / volume relationship o the ventricle
    E. Index of tension increment in time
    D. Area of pressure / volume relationship o the ventricle
    (this multiple choice question has been scrambled)
  11. The main cardiac and vasomotoric center is located in:
    A. Carotic sinus
    B. Brain cortex
    C. Hypothalamus
    D. Pons and medula oblongata
    D. Pons and medula oblongata
    (this multiple choice question has been scrambled)
  12. In normal conditions is in capillaries:
    A. The blood flow is more rapid than in arterioles
    B. The small volume of blood (approx. 5%) only
    C. Very small hematocrit
    D. 25% of the total blood volume
    E. Very rapid blood flow
    B. The small volume of blood (approx. 5%) only
    (this multiple choice question has been scrambled)
  13. The is first heart sound is:
    A. Isovolumic contraction
    B. Related to segment ST in ECG
    C. Isovolumic relaxation
    D. Isotonic relaxation
    E. Isotonic contraction
    A. Isovolumic contraction
    (this multiple choice question has been scrambled)
  14. P vawe in ECG is:
    A. At the beginning of ejection phase
    B. At the beginning of ventricular contraction
    C. At the end of atrial contraction
    D. At the end of ventricular contraction
    E. At the beginning of atrial contraction
    E. At the beginning of atrial contraction
    (this multiple choice question has been scrambled)
  15. Vasoconstriction activity of sympaticus is decreased after stimulation of
    A. Chemoreceptors in brain stem
    B. Carotid bodies
    C. Osmoreceptors
    D. Pain receptors
    E. Carotic sinus
    E. Carotic sinus
    (this multiple choice question has been scrambled)
  16. Cardiac output in resting person is approx:
    A. 5.25 l/min
    B. 9.5 l/min
    C. 7.5 l/min
    D. 4 l/min
    E. 2 l/min
    A. 5.25 l/min
    (this multiple choice question has been scrambled)
  17. Normal man has in 100 ml of blood approx.:
    A. 10 mg of Hb
    B. 16 g of Hb
    C. 10 g of Hb
    D. less then 5 g of Hb
    E. 5 mg of Hb
    B. 16 g of Hb
    (this multiple choice question has been scrambled)
  18. The regional blood flow is regulated mainly by the local metabolic activity in
    A. Bone
    B. Kidney
    C. Brain
    D. Muscle
    E. Skin
    D. Muscle
    (this multiple choice question has been scrambled)
  19. Cardiac index is the relation of:
    A. Cardiac output and body weight
    B. Systolic volume and body surface area
    C. Cardiac output and peripheral vascular resistance
    D. Cardiac output and cardiac work
    E. Cardiac output and body surface area
    E. Cardiac output and body surface area
    (this multiple choice question has been scrambled)
  20. The increase of pressure in carotid sinus results in:
    A. Decrease of venous pressure
    B. Reflex hyperpnoe
    C. Increase of heart rate
    D. Reflex bradycardia
    E. Reflex increase of venous pressure
    D. Reflex bradycardia
    (this multiple choice question has been scrambled)
  21. The common features of cardiac and skeletal muscles are:
    a. Both are striated
    b. Both contain actin and myosin
    c. Strength of contractin is related to the muscle length
    d. Both have intrinsic rythmicity
    • a. Both are striated
    • b. Both contain actin and myosin
    • c. Strength of contractin is related to the muscle length

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