SHolroydAtWeilCornellMedQatar/Endocrinology/VasopressinADH/EffectOfIncreaseのソースを表示

{{Point|  With an increase in the synthesis, secretion, and blood concentration of vasopressin (anti-diuretic hormone, ADH), the number of water channels and water reabsorption increase.  These decrease plasma osmolarity and urine volume, and also increase urine osmolarity.}}

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[[ファイル:ADHbaseline-Eng.jpg|left|500px]]
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[[メディア:ADHbaseline-Eng.mp4|video prior to an increase in vasopressin (ADH)]]<br>
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Prior to vasopressin (ADH) increasing (at baseline), we will make the assumption that the subject is in homeostasis with normal plasma and urine osmolarities (isotonic) and urine volume.
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[[メディア:ADHEffectOfIncreasing-2Eng.mp4|video just after an increase in vasopressin (ADH)]]<br>
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Step 1: Suppose that the synthesis, secretion, and blood concentration of vasopressin (ADH) increases.<br>
Step 2: The water channel-increasing effect of vasopressin (ADH) becomes stronger, which increases the number of water channels. This increases the reabsorption of water from the tubule.
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[[メディア:ADHEffectOfIncreasing-3Eng.mp4|video showing the changes in plasma and urine after the increase in vasopressin (ADH)]]<br>
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Step 3: With the increase in water reabsorption, diluted (hypotonic) solution enters the plasma. This decreases plasma osmolarity (diluted, hypotonic). Because diluted (hypotonic) solution leaves the tubule due to reabsorption, the fluid remaining in the tubule has an increased plasma osmolarity (concentrated, hypertonic). Also, with the increase in water reabsorption, there is less water remaining in the tubule. Overall, the urine becomes concentrated and decreases in volume. <br style="clear:both;" />
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<GIFT>

//LEVEL:3 
//RAND 
With an increase in the synthesis, secretion, and blood concentration of vasopressin (anti-diuretic hormone, ADH), the number of water channels in the kidney {~=increases~decreases} . 

//LEVEL:2 
//RAND 
With an increase in the synthesis, secretion, and blood concentration of vasopressin (anti-diuretic hormone, ADH), water reabsorption by the kidney {~=increases~decreases}.

//LEVEL:3 
//RAND 
With an increase in the synthesis, secretion, and blood concentration of vasopressin (anti-diuretic hormone, ADH), urine volume {increases~=decreases}. 

//LEVEL:3 
//RAND 
With an increase in the synthesis, secretion, and blood concentration of vasopressin (anti-diuretic hormone, ADH), urine osmolarity {~=increases~decreases}.

//LEVEL:3 
//RAND 
With an increase in the synthesis, secretion, and blood concentration of vasopressin (anti-diuretic hormone, ADH), plasma osmolarity {increases~=decreases}.

//LEVEL:3
//RAND
The effect of increase in vasopressin (anti-diuretic hormone, ADH) is {uterine smooth muscle contration~=a decrease in plasma osmolarity}.

//LEVEL:3 
//RAND 
The effect of increase in vasopressin (anti-diuretic hormone, ADH) is {an increase~=a decrease} in plasma osmolarity.
</GIFT>