Hole's Human Anatomy and Physiology
13th EditionDavid N. Shier, Jackie L. Butler, Ricki Lewis
1,402 solutions
Hole's Human Anatomy and Physiology
13th EditionDavid N. Shier, Jackie L. Butler, Ricki Lewis
1,402 solutions
Hole's Human Anatomy and Physiology
15th EditionDavid Shier, Jackie Butler, Ricki Lewis
1,950 solutions
Hole's Human Anatomy and Physiology
13th EditionDavid N. Shier, Jackie L. Butler, Ricki Lewis
1,402 solutions
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Terms in this set (81)
Consuming a meal high in salt will
a) drastically decreases the osmolarity of the blood.
b) result in a temporary increase in blood volume.
c) decrease thirst.
d) cause hypotension.
e) decrease renin secretion.
b
A person who consumes large amounts of sodium bicarbonate (baking soda) to settle an upset stomach risks
a) respiratory acidosis.
b) respiratory alkalosis.
c) metabolic acidosis.
d) metabolic alkalosis.
d
The principal cation in cytoplasm is
a) sodium.
b) potassium.
c) calcium.
d) magnesium.
e) chloride.
b
The amount of potassium excreted by the kidneys is regulated mainly by
a) ADH.
b) aldosterone.
c) parathormone.
d) atrial natriuretic peptides.
e) glucocorticoids.
b
Which buffers/buffer system exist(s) only in intracellular fluid?
a) plasma protein buffers
b) the phosphate buffer system
c) amino acid buffers
d) the carbonic acid-bicarbonate buffer
system
b
Intracellular fluid is found only within
a) blood vessels.
b) lymph.
c) the cells of the body.
d) the interstitial space.
e) the cerebrospinal fluid.
c
Which substance plays a central role in determining the rate of sodium reabsorption?
a) ADH
b) aldosterone
c) extracellular fluid
d) natriuretic peptides
e) epinephrine
b
When water is lost, but electrolytes are retained,
a) the osmolarity of the extracellular fluid falls.
b) osmosis moves water from the intracellular fluid to the extracellular fluid.
c) both the extracellular fluid and the intracellular fluid become more dilute.
d) there is an increase in the volume of the intracellular fluid.
e) None of the answers is correct.
b
A chemical that minimizes changes in the pH of a body fluid by releasing or binding hydrogen ion is called a(n)
a) electrolyte.
b) acid.
c) alkali.
d) compensation.
e) buffer.
e
The normal blood pH range is
a) 6.95-7.00.
b) 7.15-7.25.
c) 7.25-7.35.
d) 7.35-7.45.
e) 7.45-7.55.
d
Which of the following compounds would have a pH less than 7.0?
NaOH
NaCl
baking sod
H2CO3
H2CO3
Acidosis occurs when the blood pH:
exceeds 7.45.
drops below 7.35.
is between 7.35 and 7.45.
exceeds 8.45.
drops below 7.35
Which of the following ions helps to prevent large changes in blood pH is?
HCO3-
Fe+2 (iron)
Mg+2
Cl-
HCO3-
A solution with a H+ concentration of 1 x 10-6 is:
an acid
a base
neutral
isotonic
an acid
The numbers on the pH scale:
Are equal to the OH- concentration
Are derived from the H+ concentration
Are equal to the H+ concentration
Range from 1 - 16 with a midpoint of 8
are derived from the H+ concentration
A pH range of 7.35 - 7.45 is normal for the:
stomach
small intestine
blood
urine
blood
The concentration of Na+ is higher inside the cells than it is outside the cells.
True
False, because it is not found in either location.
False, because it is constantly pumped out of the cell by active transport.
False, because it has the same concentration in both places.
False, because it is constantly pumped out of the cell by active transport
A substance that has a sour taste and a pH of 3 is most likely a(n):
acid.
base.
neutral substance.
buffer
acid
Water is considered one of the most important substances in the body because it:
is the main component of all body fluids
is essential for digestion, circulation, and regulation of body temperature
dissolves many substances
all the above are correct
only A and B are correct
all the above are correct
Movement of water by osmosis from one fluid compartment to another will have an effect on the electrolyte concentrations in the compartments.
True
False, because water movements and electrolyte concentrations are not related.
False, because membranes are impermeable to water.
False, because electrolyte concentrations cannot change
True
Rapid
water movement between the extracellular fluid and the intracellular
fluid is termed
a) fluid shift.
b) fluid compartmentalization.
c) dehydration.
d) buffering.
a
Homeostatic mechanisms that monitor and adjust the composition of body
fluids respond to changes in the
a) intracellular fluid.
b) plasma membrane.
c) extracellular fluid.
d) solid components.
e)
cytosol.
c
Which hormone(s) is released by cardiac muscle cells in response to increased atrial distension?
a) ADH
b) aldosterone
c) PTH
d) acetylcholine
e) natriuretic peptides
e
When the blood pH falls below 7.35, ________ results.
acidemia
alkalemia
acidemia
When pure water is consumed,
a) the extracellular fluid becomes hypertonic to the intracellular fluid.
b) the volume of the intracellular fluid decreases.
c) osmolarities of the two fluid compartments fall.
d) the volume of the extracellular fluid decreases.
c
The ________ play(s) a key role in maintaining acid-base homeostasis by eliminating carbon dioxide.
a) The respiratory system
b) The kidneys
c) Buffer systems
d) Tissue cells
a
The primary role of the carbonic acid-bicarbonate buffer system is to
a) buffer stomach acid.
b) increase ventilation.
c) limit blood pH changes.
d) buffer the urine.
c
Which of the following electrolytes contributes most to intracellular osmotic pressure?
phosphorus
potassium
chloride
calcium
potassium
Na+ and Cl- are to interstitial fluid as K+ and HPO4-2 are to:
plasma
extracellular fluid
intracellular fluid
blood
intracellular fluid
Which statement is true:
K+(potassium) is the major cation found in the interstitial fluids
HCO3- (bicarbonate) is the major anion found in the interstitial fluids
HCO3- (bicarbonate) is the major anion found in the intracellular fluids
K+ (potassium) is the major cation found in the intracellular fluids
K+ is the major cation found in the intracellular fluids
If a cell is placed in a large volume of hypotonic solution, which of the following statements would be correct?
The concentration of the solution around the cell is greater than the concentration of the solution inside the cell.
The concentration of the solution inside the cell is less than the concentration of the solution around the cell.
The cell will swell.
The net movement of water will be out of the cell.
the cell will swell
A membrane that allows some, but not all, substances to cross it is best described as:
nonpermeable
permeable
semipermeable
impermeable
semipermeable
With regard to mineral balance, the primary site of ion loss in the body is
a) the epithelial lining of the small intestine and colon.
b) sweat gland secretions.
c) the skeleton.
d) the kidneys.
e) the liver.
d
________ consists of a combination of a weak acid and its associated anion.
a) water balance
b) exchange pump
c) leak channel
d) fixed acid
e) buffer system
e
When the pH of the extracellular fluid drops, the kidneys
a) excrete more hydrogen ions.
b) reabsorb bicarbonate ions.
c) excrete more hydrogen ions and excrete more bicarbonate ions.
d) excrete more hydrogen ions and reabsorb bicarbonate ions.
d
Aldosterone
a) is secreted in response to decreased blood volume.
b) promotes sodium retention in the kidneys.
c) helps increase blood volume and raise blood pressure.
d) All of the answers are correct.
e) none of the answers is correct
d
The ions in highest concentration in the extracellular fluid are sodium and
a) chloride.
b) potassium.
c) calcium.
d) hydrogen.
e) phosphorus.
a
When the pH rises above 7.45, a state of ________ exists.
acidosis
alkalosis
alkalosis
In an adult female, the body consists of about ________ percent water.
a) 60
b) 50
c) 40
d) 70
e) 80
b
Compared to intracellular fluid, extracellular fluid has which of the following?
higher Na+ and K+ concentrations.
higher Na+ and Cl- concentrations.
lower Na+ but greater K+ concentrations.
higher protein concentration.
higher Na+ and Cl- concentrations
An increase in sodium concentration in the interstitial fluid would lead to a(an):
increase in intracellular fluid volume.
increase in the intracellular sodium concentration.
increase in interstitial fluid volume.
decrease in the interstitial fluid volume.
increase in interstitial fluid volume
If you drank 2 liters of isotonic fluid, which of the following statements would be correct?
The fluid volume of all body fluid spaces (plasma, interstitial, and intracellular) would decrease.
The plasma volume would increase.
One would need to be concerned about possible hypovolemia.
The solute concentration of the plasma would increase.
the plasma volume would increase
Alkalosis:
is a normal condition found in body fluids
may occur after prolonged vomiting due to loss of stomach acid
occurs where there is an over production of acids in the body tissues
occurs when the blood pH reaches 7.0
may occur after prolonged vomiting due to loss of stomach acid
A solution that resists large changes in pH is a:
buffer solution
molar solution
concentrated solution
saturated solution
buffer solution
The main difference in the chemical composition of plasma and interstitial fluid is that:
each contains different electrolytes.
K+ is the major cation in plasma, but Na+ is the major one in interstitial fluid.
plasma contains considerably more proteins.
plasma does not contain electrolytes.
plasma contains considerably more proteins
If a large amount of water were added to the interstitial fluid, what would most likely occur?
Electrolytes would become more concentrated in the interstitial fluid.
Water would move into the cells.
The cells would lose water.
Electrolyte concentration would increase inside the cells.
water would move into the cells
A solution that will not change in pH upon the addition of small amounts of either acid or base is called a:
dilute solution
normal solution
molar solution
buffer solution
buffer solution
Hypoventilation leads to
a) respiratory acidosis.
b) respiratory alkalosis.
c) metabolic acidosis.
d) metabolic alkalosis.
a
Which of the following descriptions best fits the acid-base disorder respiratory alkalosis?
a) consequence of hyperventilation, for example in fever or mental illness
b) consequence of prolonged vomiting
c) consequence of reduced alveolar ventilation, for example due to COPD
d) consequence of tissue hypoxia, for example in ischemic conditions
a
Which of the following descriptions best fits the acid-base disorder metabolic alkalosis?
a) consequence of hyperventilation, for example in fever or mental illness
b) consequence of prolonged vomiting
c) consequence of reduced alveolar ventilation, for example due to COPD
d) consequence of tissue hypoxia, for example in ischemic conditions
b
All of the following factors cause potassium excretion except
a) potassium concentrations rise in the ECF.
b) decreased pH of extracellular fluid.
c) stimulation by aldosterone.
d) increased pH of extracellular fluid.
b
Hyperventilation will ________ pH.
a) raise (increase)
b) lower (decrease)
a
About two-thirds of the body's fluid is within cells and is termed ________ fluid.
a) intracellular
b) intercellular
c) extracellular
d) interstitial
e) vital
a
Which of the following descriptions best fits the acid-base disorder respiratory acidosis?
a) consequence of hyperventilation, for example in fever or mental illness
b) consequence of prolonged vomiting
c) consequence of reduced alveolar ventilation, for example due to emphysema
d) consequence of tissue hypoxia, for example in ischemic conditions
c
In order to maintain fluid balance in the body, there must be:
an electrolyte balance
continual edema
plasma membrane permeability to proteins
greater fluid intake than output per day
an electrolyte balance
A substance that has a sour taste and a pH of 3 is most likely a(n):
acid.
base.
neutral substance.
buffer.
acid
When the H+ concentration of a solution decreases, the pH of that solution:
increases
decreases
will not change
will always be 7.0
increases
Movement of water by osmosis from one fluid compartment to another will have an effect on the electrolyte concentrations in the compartments.
True
False, because water movements and electrolyte concentrations are not related.
False, because membranes are impermeable to water.
False, because electrolyte concentrations cannot change.
true
The solute concentration inside of cell A is 0.9%. The solute concentration outside of cell A is 2.5%. The solution outside of the cell is ______________ to the solution inside the cell.
isotonic
hypertonic
hypotonic
intracellular
hypertonic
Which of the following statements is NOT true of the pH scale?
The pH scale ranges from 0 to 14.
The pH scale is a logarithmic scale.
The pH scale is a standard means of expressing the acidity or alkalinity of any solution.
The pH scale is always equal to the H+ concentration of the solution.
the pH scale is always equal to the H+ concentration of the solution
Which of the following is NOT true of the pH scale?
The pH values are derived from H+ concentration.
The pH scale ranges from 1 - 12.
The pH scale is a logarithmic scale.
The pH scale is a standardized means of expressing the H+ concentration of a solution.
the pH scale ranges from 1-12
The numbers on the pH scale:
Are equal to the OH- concentration
Are derived from the H+ concentration
Are equal to the H+ concentration
Range from 1 - 16 with a midpoint of 8
are derived from the H+ concentration
A red blood cell in an isotonic solution will:
have no concentration change, therefore no change in cell size.
cease all forms of transport.
shrink.
expand.
have no concentration change, therefore no change in cell size
Normal K+ concentration in extracellular fluid is ________ mEq/L.
a) 1.5
b) 1.5-3.0
c) 3.5-5.0
d) 5.5-7
e) 135
c
Excess hydrogen ion is eliminated from the body largely by
a) sweating.
b) the kidneys.
c) the liver.
d) the feces.
e) buffers.
b
Antidiuretic hormone
a) inhibits water intake.
b) inhibits water conservation.
c) stimulates water conservation by the kidneys.
d) All of the answers are correct.
e) None of the answers is correct.
c
Prolonged vomiting can result in
a) respiratory acidosis.
b) respiratory alkalosis.
c) metabolic acidosis.
d) metabolic alkalosis.
d
In an adult male, the body consists of about ________ percent water.
a) 60
b) 90
c) 40
d) 10
e) 80
a
Secretion of potassium into the urine is
a) increased by aldosterone.
b) associated with the reabsorption of sodium from the distal tubules and collecting ducts.
c) reduced when the exchange pump binds H+.
d) All of the answers are correct.
e) None of the answers is correct.
d
Normally, intracellular and extracellular fluids are isotonic to each other.
true
false
true
Cholera causes devastating diarrhea. This will lead to:
edema
loss of water and electrolytes
sweating
hypotonic hydration
loss of water and electrolytes
Substantial loss of bodily fluids, such as occurs in severe diarrhea, could lead to:
hypovolemia.
hypervolemia.
loss of electrolytes.
both a and c.
both a and c
The fluid inside a cell is referred to as:
extracellular.
interstitial.
intracellular.
plasma.
intracellular
Fluid and electrolyte balance in the body:
has little relationship to the overall body metabolism
is an important part of homeostasis
becomes important only in severe cases of dehydration
is regulated mostly by the lungs
is an important part of homeostasis
Which of the following electrolytes is a major extracellular fluid anion and functions in water balance?
sodium
potassium
chloride
phosphate
chloride
Patients who have prolonged fluid and electrolyte losses require replacement of extracellular fluid. Replacement therapy is best accomplished with a solution containing:
sodium ions
chloride ions
calcium ions
both a and b
both a and b
Maintaining a constant volume of fluid in the interstitial compartment is an example of:
hyponatremia.
tight junction.
hypervolemia.
homeostasis.
hemeostasis
Which of the following statements are true?
Water moves through membranes by active transport in response to changes in electrolyte concentrations.
Water moves passively through membranes due to changes in electrolyte concentrations.
A semipermeable membrane is impermeable to water and electrolytes.
In osmosis, water moves through a semipermeable membrane from an area of high solute concentration to an area of low solute concentration.
water moves passively through membranes due to changes in electrolyte concentrations
Distilled water is injected into a blood vessel. In response to this, the red blood cells surrounded by the water would:
shrink
swell
show no change in size
lose large amounts of electrolytes to the surrounding fluid
swell
Consuming a meal high in salt will
a) drastically decreases the osmolarity of the blood.
b) result in a temporary increase in blood volume.
c) decrease thirst.
d) cause hypotension.
e) decrease renin secretion
b
An increase of Na+ concentration in the extracellular fluids would lead to:
loss of Na+ from cells.
water moving by osmosis from cells into the extracellular fluids.
gain of Na+by cells.
no change in the distribution of water between intracellular and extracellular fluids.
water moving by osmosis from cells into the extracellular fluids
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