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Cumulative Exam > Physiology I Exam III > Flashcards

Physiology I Exam III Flashcards

1
Q

Mean cap pressure…yada yada yada. Total inward force?

A

28.0 mmHg

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2
Q

Hypertonic fluid is added to the extracellular fluid, what is the effect after osmotic equilibrium?

A

Decrease in intracellular and increase in extracellular

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3
Q

GFR is determined by the by the net filtration pressure and the glomerular capillary filtration coefficient. Which of the following factors has greatest effect on increasing GFR?

A

Glomerular hydrostatic pressure

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4
Q

Which of the following variable DOES NOT determine glomerular hydrostatic pressure?

A

Bowman’s capsule colloid osmotic pressure

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5
Q

Many actively transported solutes demonstrate a transport maximum. Which does NOT?

A

Sodium in proximal tubule

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6
Q

The thin descending loop of Henle is highly permeable to

A

Water

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7
Q

1,2,1 transporter found

A

Thick ascending limb of Henle

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8
Q

Where is macula densa

A

DCT

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9
Q

Aldosterone is an important regulator …. main target

A

Principal cells

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10
Q

T/F Angiotensin most powerful sodium tetainer

A

True

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11
Q

Where ADH levels are high, the lowest osmolality in the renal tubule would be found

A

DCT

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12
Q

ADH secreted where

A

Post. Pit

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13
Q

Forces that determine movement are Starling forces. Which move fluid inward at the arterial end of the capillary?

A

Plasma colloid osmotic pressure

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14
Q

Small connecting nerves

A

Hering nerves

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15
Q

T/F Because of Bainbridge reflex, an increase in atrial pressure causes stronger contraction but decreases heart rate

A

FALSE

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16
Q

NOT result in vasoconstriction

A

Nitric oxide

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17
Q

Release of ANP as result of atrial stretch would have effect

A

Increased GFR and decreased sodium ion reabsorption

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18
Q

Characteristics of primary HTN would NOT include

A

Activation of renal-pressure natriuesis mechanism

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19
Q

T/F The near infinite feedback gain principle is defined as the degree of pressure shift of the renal output curve for water and salt

A

False

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20
Q

Built in mechanism that allows heart to pump amt of blood RA

A

Starling’s law

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21
Q

Factors that cause a hypoeffective heart would NOT include

A

Hypertrophy of the heart

22
Q

Which of the following statements is/are correct.
I. During systole
II. During diastole

A

NEITHER are correct

23
Q

Primary controller of coronary artery blood flow is

A

Local muscle metabolism

24
Q

Which statement is correct:

I. Acute heart failure is likely to cause pulmonary edema

A

Only I.

Not systemic, not enough time

25
Q

T/F The second heart sound results from sudden closure of AV valves

A

FALSE

26
Q

NOT cause of neurogenic shock

A

Hemorrhage

27
Q

Approx how much calcium reabsorbed by kidney

A

Almost all of it

28
Q

An increase in this will decrease glomerular hydrostatic pressure?

A

Afferent arteriorlar pressure

29
Q

A decrease in sodium chloride conc causes macula densa to

A

Decrease resistance to blood in the afferent arterioles

30
Q

During depolarization, threshold is the voltage at which

A

The sodium ion current exceeds the potassium ion current

31
Q

In Stokes Adams, a rapid discharge of impulses and after variable period of time ends suddenly

A

False

32
Q

Van’t Hoff’s law allow one to calculate potential osmotic pressure of a solution. To correct for deviation, also use

A

Osmotic coefficient

33
Q

Hering-Breuer is triggered to respond to excessive stretching during excessive inspiration. T/F

A

True

34
Q

Which center is responsible for est ramp signal

A

Dorsal resp group

35
Q

A factor that affects the diffusion rate of a gas and that is characteristic of the gas itself is

A

Solubility of the gas

36
Q

Which of the following decreases H+ secretion and bicarbonate reabsorption?

A

Decrease in angiotensin II

37
Q

T/F Kidneys most powerful of 3 lines of defense

A

True

38
Q

Destruction 50-80% alveolar walls is

A

Emphysema

39
Q

Humidification of air in alveoli

A

Decreases the partial pressures of each of the other gasses

40
Q

% of CO2 carried in blood as bicarbonate?

A

70%

41
Q

“Switch-off” point of inspiratory ramp signal

A

Pneumotaxic

42
Q

Unlike CO2, O2 acts on this to control rate of respiration

A

Carotid body

43
Q

Alveolar collapse condition

A

Atelectasis

44
Q

Lack of surfactant, esp in newborn

A

Atelectasis

45
Q

Physiological dead space calculation is

A

bohr’s

46
Q

Va/Q is zero under which conditions

A

Va = 0

Perfusion > 0

47
Q

If arterial blood carries 19.4 and returning 14.4 the utilization coefficient is

A

25%

48
Q

The rate and depth of breathing is mainly controlled by

A

Pneumotaxic center

49
Q

T/F Kidneys produce compensatory response to resp acidosis

A

TRUE

50
Q

T/F Tubular fluid becomes more dilute as it ascend the ascending loop of Henle as long as ADH is present

A

FALSE

51
Q

Vital capacity of lung is calculated by summing all EXCEPT

A

Functional residual capacity

Cumulative Exam (5 decks)

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