記憶度
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問題一覧
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
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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
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converts into more active form called Angiotensin II
Angiotensin I
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- a vasoconstrictor substance - acts on the ADRENAL CORTEX to increase secretion of ALDOSTERONE
Angiotensin II
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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
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- large amounts of this can cause vasoconstriction of blood vessels causes BP to increase
Vasopressin
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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