Chapter 26 fluid and electrolyte balance Study guide
How much of the total volume of body fluid is intracellular fluid?
2/3
80% of the extracellular fluid is:
interstitial fluid
This is the largest single component of the human body
water
This occurs when water loss is greater than water gain:
dehydration
which of the following is used to promote sodium reabsorption by the kidneys?
aldosterone
which of the following is used to promote water reabsorption by the kidneys
andiuretic hormone
Water intoxication results from:
dilute body fluids and a a decrease in the osmolarity of interstitial fluids
Which of the following is a specific function of electrolytes in the body
carry electrical currents
in extracellular fluid the most abundant CATION is
Na+
in extracellular fluid the most abundant ANION is:
Cl-
in INTRACELLULAR fluid the most abundant cation is
K+
The Na+ level in blood is controlled by
aldosterone
This occurs between RBC and blood plasma as the blood level of carbon dioxide increases or decreases
chloride shift
This is the most abundant mineral in the body
Calcium
PTH, calcitriol and calcitonin are
the main regulators of calcium in the blood
Buffer systems exhaling carbon dioxide and excretion by the kidneys are all
ways to eliminate H+ from the body
This is a condition where blood pH is below 7.35
acidosis
Inadequate exhalation of carbon dioxide can cause
blood pH to decrease
This imbalance results when systemic arterial blood CO2 levels raise to abnormal values:
respiratory acidosis
This is the most common cause of metabolic alkalosis:
vomiting
This is the most common cause of transitory respiratory alkalosis
hyperventilation
The rate of fluid intake and outtake is how much higher i an infant than in an adult
7times higher
The largest volume of body fluid is located
within cells
Bone, DNA,RNA, ATP and cell membranes all have one thing in common
phosphate
Levels of which of the following are regulated by aldosterone
sodium
Electrolytes
dissociate into anions and cations
Reabsorption of sodium from tubules of the nephron establishes an osmotic gradient that causes this to move back into the blood
water
The cerebrospinal fluid in the brain is classified as:
extracellular fluid
Hyperventilation (breathing in and out more air than normal) during a panic attack causes an increase in blood:
partial pressure of CO2
The oxygen atoms that we breath in are used immediately in aerobic respiration to make ATP and:
H2O
True/False: ADH and aldosterone are hormones that regulate fluid loss
True
The primary way to increase body water is to increase the formation of metabolic water
False
Most buffers consist of a mixture of weak acid that can donate H+ and the salt of that weak acid that can accept H+. Through this action pH change is resisted due to increases and decreases in H+ concentration
True
An increase in blood volume will stimulate thirst.
False
Albumin is a protein "buffer"in blood plasma
True
Changes in osmolarity and osmosis are the primary causes of water movements between various flud compartments in the body
True
Lists: LIst four hormones that regulate urine production in the kidneys:
ADH, aldosterone, angiotensin II, atrial naturetic peptide
Matching: Can be caused by oxygen deficiency at high altitude, stroke, or severy anxiety
Respiratory alkalosis
Can be caused by excessive vomiting of gastric contents, gastric suctioning, use of certain diuretics, severe dehydration, or excessive intake of alkaline drugs
metabolic alkalosis
AN abnormal increase in the volume of intersitial fluid
Edema
Can occur during renal failure or destruction of body cells that release phosphates into the blood
hyperphosphatemia
Can be caused by actual loss of bicarbonate ions, ketosis, or failure of the kidneys to excrete H+
metabolic acidosis
Can be caused by excessive waterintake, excessive vomiting, or aldosterone deficiency
Hyponatremia
Can be caused by emphysema, pulmonary edema, injury to the respiratory center of the medulla oblongata, airway destruction, or disorders of the muscles of breathing
respiratory acidosis
Can occur from hypoparathyroidism
hypocalcemia
Can be caused by decreased potassium intake or kidney disease; results in muscle fatigue, increased urine output, changes in electrocardiogram
hypokalemia
condition that can occur as water moves out of plasma into interstitial fluid and blood volume decreases
hypovolemia
Can be caused by excessive sodium in the diet or with dehydration
hypernatremia
occurs when water loss is greater than water gain
dehydration
the swelling of cells due to water moving from plasma into interstitial fluid and then into cells
water intoxication