記憶度
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問題一覧
1
What is respiratory acidosis ?
abnormally high PCO2 in systemic arterial blood (above 45 mmHg)
2
What is hyponatremia ?
low sodium content (water content is too high)
3
What is metabolic alkalosis ?
occurs whenever non-respiratory acids are lost
4
In females what are the percentages of body mass ?
45% solids, 55% fluids
5
What is respiratory alkalosis ?
occurs whenever too much CO2 is lost (PCO2 falls below 35 mmHg)
6
Which hormones regulate calcium levels ?
parathyroid hormone , calcitonin
7
Intercalated cells of renal tubule regulates which anion
bicarbonate
8
What is the total body fluid ratio in males and females
2/3 intracellular fluid, 1/3 extra cellularfluid
9
What is the main cation and anion in extracellular and intracellular fluid ?
extracellular fluid- cation is Na+ and anion is Cl-, intracellular fluid- cation is K+ and anions are proteins and phosphates
10
What are the 2 types of fluid ?
intracellular fluid- all fluid contained inside cells, and comprises 2/3 of all body fluids, extracellular fluid- all fluid outside the confines of the plasma membranes that contain all intracellular contents * 1/3 of all body fluid is contained in the extracellular compartment
11
Explain the protein buffer system
Proteins composed of amino acids and contain at least one carboxyl groups (-COOH) and at least one amino group (NH2)
12
When do protein buffer release or combine with a H ?
Free carboxyl group acts like an acid by releasing H+ when pH rises (alkaline conditions) , Free amino group at other end can act as a base by combining with H+ when pH falls (acidic conditions)
13
What is the blood pH is acidosis and alkalosis ?
acidosis- below 7.35, alkalosis- above 7.45
14
What is the extracellular fluid percentages ?
80% interstitial fluid, 20% blood plasma
15
In males what are the body mass percentages ?
40% solids, 60% fluids
16
What are the two general barriers separating these fluid compartments ?
plasma membrane of individual cells, blood vessel walls
17
What is the main factor that determines body fluid volume ?
water loss and intake
18
Explain how the RAA system fixes this
stimulates kidneys to release renin, promotes formation of angiotensin ll, increase blood osmolarity
19
If water volume/pressure goes up which hormone is secreted ?
atrial natriuretic peptide hormone
20
What can hypoventalion and hyperventilation cause ?
hypoventilation- bring pH into normal range , hyperventilation- losing too much CO2
21
What plasma anion is the most significant ?
chloride
22
Explain water gain
metabolic water (200 mL), ingested foods (700 mL), ingested liquids (1600 mL)
23
If mild dehydration occurs, what happens to blood volume/pressure ?
decreases
24
Is water loss and water gain equal
yes
25
Explain water loss
GI tract (100 mL), lungs (300 mL), skin (600 mL), kidneys (1500 mL)
26
What is metabolic acidosis ?
is characterized by a decreased bicarbonate level and decreased pH
27
Where is the thirst center located ?
hypothalamus