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physiology of circulation academic weaponizer
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  • 問題数 24 • 12/18/2023

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  • 1

    measure of force of blood exerts against the blood vessel walls

    Blood pressure

  • 2

    contraction of ventricles of heart

    Systolic pressure

  • 3

    relaxation of the ventricles of heart

    Diastolic pressure

  • 4

    difference between systolic and diastolic pressure.

    Pulse pressure

  • 5

    controls blood pressure, vasomotor center

    Pons and medulla oblongata

  • 6

    the amount of blood the heart pumps through the circulatory system in a minute.

    Cardiac output

  • 7

    resistance to blood flow in all the blood vessels

    Peripheral resistance

  • 8

    is equal to the cardiac output times the peripheral resistance

    Mean Arterial Pressure

  • 9

    - plays an impt. role in regulating the function of the heart - activates respones that keep the BP within normal range of value - respond to stretch in arteries caused by increase BP

    Baroreceptor reflexes

  • 10

    2 bodies that have chemoreceptor reflexes

    Carotid and Aortic Bodies

  • 11

    contain sensory receptors that respond to changes in blood o2 concentration.

    Carotid bodies and Aortic Bodies

  • 12

    - they send action potentials along sensory nerve fibers to medulla oblongata

    Carotid and Aortic Bodies

  • 13

    this response releases epinephrine into the blood

    Adrenal Mullary Response

  • 14

    - causes vasoconstriction especially uin blood vessels in the skin and viscera - causes vasodilation of blood vessels in skeletal muscle and cardiac muscle

    Epinephrine

  • 15

    - kidneys release this enzyme into the circulatory system. - acts on the blood protein angiotensiongen to produce angiotensin I

    Renin

  • 16

    - release of this acts to increase BP to the normal value, in response to reduced BP

    Renin

  • 17

    converts into more active form called Angiotensin II

    Angiotensin I

  • 18

    - a vasoconstrictor substance - acts on the ADRENAL CORTEX to increase secretion of ALDOSTERONE

    Angiotensin II

  • 19

    conserve sodium and water

    Aldosterone

  • 20

    causing release of antiduiretic hormone called vasopressin

    Hypothalamus

  • 21

    - causes a greater reabsorption of water by kidneys and decrease urine volume.

    Vasopressin

  • 22

    - large amounts of this can cause vasoconstriction of blood vessels causes BP to increase

    Vasopressin

  • 23

    called the release from the specialized cells in right atrium in response to elevated BP  - causes kidneys to promote the loss of sodium in the urine and to increase urine volume

    Atrial Natriuretic Mechanism

  • 24

    Hypothalamus releases an antidiuretic hormone called what?

    Vasopressin