BIO220 Topic 10 Graded Quiz

10 Jun BIO220 Topic 10 Graded Quiz

Question
Question 1

2.50 points out of 2.50

Question text

Adequate calcium absorption from the GI tract depends on

Select one:

a. serum K levels.

b. serum calcitonin levels.

c. adequate amounts of vitamin D.

d. the osmolality of the extracellular fluid.

e. adequate amounts of vitamin C.

Question 2

2.50 points out of 2.50

Question text

As the rate of sweat production increases, the amount of sodium lost in the urine

Select one:

a. increases.

b. decreases.

c. remains the same.

Question 3

2.50 points out of 2.50

Question text

Which of the following can play a role in buffering the pH of urine?

Select one:

a. ammonia

b. bicarbonate ions

c. phosphate ions

d. ammonia and bicarbonate ions

e. ammonia, bicarbonate ions and phosphate ions

Question 4

2.50 points out of 2.50

Question text

Parathyroid hormone effects the

Select one:

a. bones, heart, and blood.

b. kidney, liver, and spleen.

c. intestine, kidneys, and bone.

d. liver, stomach, and small intestine.

e. stomach, pancreas, and bone.

Question 5

2.50 points out of 2.50

Question text

Calcitonin

Select one:

a. promotes the absorption of calcium from the gastrointestinal tract.

b. promotes osteoclast activity in the bones.

c. reduces calcium excretion by the kidneys.

d. reduces extracellular calcium ion levels.

e. increases blood calcium levels.

Question 6

2.50 points out of 2.50

Question text

Receptors sensitive to changes in the osmolality of extracellular fluid are the

Select one:

a. baroreceptors.

b. chemoreceptors.

c. osmoreceptors.

d. pressoreceptors.

e. proprioreceptors.

Question 7

2.50 points out of 2.50

Question text

Calcium balance is influenced by

Select one:

a. ADH and parathyroid hormone levels.

b. ADH and aldosterone levels.

c. parathyroid hormone and vitamin D levels.

d. aldosterone and parathyroid hormone levels.

e. insulin and glucagon.

Question 8

2.50 points out of 2.50

Question text

Serum electrolyte concentrations are most often expressed as

Select one:

a. mg %.

b. mmHg.

c. mg/dl.

d. mEq/L.

e. None of these choices is .

Question 9

2.50 points out of 2.50

Question text

The diagram illustrates the effect of BP on sodium and water reabsorption in the kidneys. What does “A” represent?

Select one:

a. decreased BP

b. increased renin secretion

c. angiotensinogen

d. angiotensin II

e. increased sodium and water reabsorption results in increased BP

Question 10

2.50 points out of 2.50

Question text

Elevated blood pressure under resting conditions results in increased urinary output because

Select one:

a. baroreceptors signal the hypothalamus to increase ADH secretion.

b. elevated blood pressure stimulates renin secretion.

c. the amount of angiotensin II formed is increased.

d. aldosterone levels increase.

e. baroreceptors signal the hypothalamus to decrease ADH secretion.

Question 11

2.50 points out of 2.50

Question text

An increase in blood CO2 levels is followed by a(n) ____ in H+ ions and a(n) ____ in blood pH.

Select one:

a. decrease, decrease

b. decrease, increase

c. increase, increase

d. increase, decrease

e. increase, no change

Question 12

2.50 points out of 2.50

Question text

Which of the following is ly matched?

Select one:

a. alkalosis – hypokalemia

b. cell destruction – hypokalemia

c. increased secretion of aldosterone – hyperkalemia

d. overuse of diuretics – hyperkalemia

e. acidosis – hypokalemia

Question 13

2.50 points out of 2.50

Question text

If the hydrogen ion concentration in the blood increases, bicarbonate ions act as buffers by

Select one:

a. removing excess hydrogen ions from the plasma.

b. releasing hydrogen ions into the plasma.

c. dissociating into H+ and CO3-.

d. combining with chloride ions.

e. combining with hemoglobin.

Question 14

2.50 points out of 2.50

Question text

Which of the following statements concerning potassium ions is false?

Select one:

a. An increase in the extracellular potassium ion concentration leads to depolarization.

b. Potassium ions are secreted into the nephron by the distal convoluted tubule.

c. When aldosterone levels are high, potassium secretion is low.

d. Aldosterone secretion is stimulated by high blood levels of potassium ions.

e. None of these choices is false.

Question 15

2.50 points out of 2.50

Question text

Which of the following would be expected to cause hyponatremia?

Select one:

a. high intake of sodium

b. increased aldosterone production

c. increased urine output

d. decreased aldosterone production

e. decreased ADH production

Question 16

2.50 points out of 2.50

Question text

The predominant intracellular cation is

Select one:

a. potassium.

b. sodium.

c. calcium.

d. magnesium.

e. chloride.

Question 17

2.50 points out of 2.50

Question text

Which of the following individuals would have the largest percentage of their bodyweight as water?

Select one:

a. a 7-month-old female

b. a lean 35-year-old male athlete

c. a chunky 52-year-old male athlete

d. a healthy 88-year-old male

e. an adult female marathon runner

Question 18

2.50 points out of 2.50

Question text

The main regulator of serum phosphate levels is a transport process in the

Select one:

a. liver.

b. kidneys.

c. pancreas.

d. small intestine.

e. large intestine.

Question 19

2.50 points out of 2.50

Question text

Which of the following fluid compartments contains the largest volume of water?

Select one:

a. plasma

b. interstitial compartment

c. intracellular compartment

d. extracellular compartment

e. lymph

Question 20

2.50 points out of 2.50

Question text

Respiratory alkalosis can occur as a result of

Select one:

a. asphyxia.

b. asthma.

c. severe emphysema.

d. hyperventilation.

e. hypoventilation.