Ch 18: The Cardiovascular System (Part 2)

Ch 18: The Cardiovascular System (Part 2)
18問 • 1年前
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    問題一覧

  • 1

    = volume of blood pumped out by one ventricle with each beat

    SV

  • 2

    ___ increases if either / both SV or HR increased

    CO

  • 3

    ___ is the filled volume of the vehicle prior to contraction

    end diastolic volume

  • 4

    ___ is the residual volume of blood remaining in the ventricle after ejection

    end systolic volume

  • 5

    ___ = end diastolic volume - end systolic volume

    SV

  • 6

    Three main factors affect SV:

    contractility; preload; afterload

  • 7

    Contractile strength at given muscle length

    contractility

  • 8

    Degree of stretch of cardiac muscle cells before they contract

    preload

  • 9

    At rest, shorter than optimal length

    tension-length curves

  • 10

    Amount of blood returning to heart

    venous return

  • 11

    Pressure ventricles must overcome to eject blood

    afterload

  • 12

    ___ activated by emotional or physical stressors

    SNS

  • 13

    ___ opposes sympathetic effects

    PNS

  • 14

    Heart at rest exhibits ___

    vagal tone

  • 15

    ___ from adrenal medulla increases heart rate and contractility

    epinephrine

  • 16

    ___ increases heart rate; enhances effects of norepinephrine and epinephrine

    thyroxine

  • 17

    ___ > depresses heart

    hypocalcemia

  • 18

    ___ > increased HR and contractility

    hypercalcemia

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    問題一覧

  • 1

    = volume of blood pumped out by one ventricle with each beat

    SV

  • 2

    ___ increases if either / both SV or HR increased

    CO

  • 3

    ___ is the filled volume of the vehicle prior to contraction

    end diastolic volume

  • 4

    ___ is the residual volume of blood remaining in the ventricle after ejection

    end systolic volume

  • 5

    ___ = end diastolic volume - end systolic volume

    SV

  • 6

    Three main factors affect SV:

    contractility; preload; afterload

  • 7

    Contractile strength at given muscle length

    contractility

  • 8

    Degree of stretch of cardiac muscle cells before they contract

    preload

  • 9

    At rest, shorter than optimal length

    tension-length curves

  • 10

    Amount of blood returning to heart

    venous return

  • 11

    Pressure ventricles must overcome to eject blood

    afterload

  • 12

    ___ activated by emotional or physical stressors

    SNS

  • 13

    ___ opposes sympathetic effects

    PNS

  • 14

    Heart at rest exhibits ___

    vagal tone

  • 15

    ___ from adrenal medulla increases heart rate and contractility

    epinephrine

  • 16

    ___ increases heart rate; enhances effects of norepinephrine and epinephrine

    thyroxine

  • 17

    ___ > depresses heart

    hypocalcemia

  • 18

    ___ > increased HR and contractility

    hypercalcemia