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2 Reviewer A - Veterinary Physiology > Physiology Recency C > Flashcards

Physiology Recency C Flashcards

1
Q

The chloride shift is necessary for transport of CO2 in the form of:
a.Carbamino haemoglobin
b.Soluble gas
c.Plasma NaHCO3
d. H3co3

A

Plasma NaHCO3

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2
Q

Thyroid hormones alter the effects of epinephrine by:
a.Increasing the number of alpha receptors per cell
b.Decreasing the density of enzymes destroying epinephrine
c.Increasing the activity of enzymes destroying epinephrine
d.Increasing the number of beta receptors per cell

A

Increasing the number of beta receptors per cell

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3
Q

The theory of muscle contraction involving interaction of actin and myosin is called the:
a.Sliding filament theory
b.Cross bridge theory
c.Continuous filament theory
d.Folding theory

A

Cross bridge theory

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4
Q

Blockage of sodium-potassium pumps of excitable cells with digitalis derivatives results in:
a.Reduced cell size
b.Increased resting cell membrane potential
c.Depolarization
d.Blockage of all cellular transport

A

Depolarization

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5
Q

Damage to which part of the nervous system is most likely to produce instant death in an animal?
a.Brachial plexus
b.Brainstem
c.Cerebellum
d.Cerebrum

A

Cerebrum

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6
Q

Intrinsic cell membrane proteins that serves as ionic pump:
a.Contain an ATPase domain
b.Allow passive diffusion of ions
c.Are fixed in number for a given cell type
d.Maintain a constant rate of ionic transport

A

Contain an ATPase domain

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7
Q

Co-transport of organic substrates across mammalian cell membrane:
a.Can occur with potassium diffusion
b.Can involve only 2 organic compounds
c.Requires sodium diffusion
d.Must transport only one substrate at a time

A

Requires sodium diffusion

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8
Q

AFterload to left ventricular contraction is defined as the intraventricular pressure:
a.At the end of systole
b.Required to open the aortic valve
c.At the end of diastole
d.Required to close the left atrioventricular valve

A

Required to open the aortic valve

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9
Q

Plasma bilirubin is:
a.Made soluble by albumin
b.Excreted unconjugated
c.Converted to biliverdin
d.Water soluble

A

Made soluble by albumin

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10
Q

To convert ATP to cAMP, adenylate cyclase requires:
a.Calcium
b.Potassium
c.Sodium
d.Magnesium

A

Magnesium

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11
Q

Monocytes released from the bone marrow have an intravascular half-life of about:
a.3 days
b.2 days
c.1 day
d.12 hours

A

3 days

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12
Q

Vitamin B12 absorption:
a.Occurs in the duodenum
b.Uses a sodium-linked transport system
c.Requires intrinsic factors
d.Requires bile salts

A

Requires intrinsic factors

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13
Q

Associated weak acid is ___, while a dissociated weak base is___.
a.Nonionized, ionized
b.Nonionized, nonionized
c.Ionized, Nonionized
d/Ionized, ionized

A

Ionized, Nonionized

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14
Q

In the equation pH=pK + log U/P, pK is?
a. The dissociation constant of the substance
b.The -log of the dissociation constant
c. The log of the dissociation constant
d.The Henderson factor

A

The -log of the dissociation constant

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15
Q

The hydrophobic tails of a membrane phospholipid corresponds to the:
a.Fatty acid
b.Glycerol
c.Phosphocholine
d.All of the above

A

Fatty acid

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16
Q

When Vincristine is used as an anti-cancer drug, it specifically affects the function of this organelle
a.Nucleus
b.Endoplasmic reticulum
c.Microtubule
d.Lysosome

A

Microtubule

17
Q

Which of the following may increase the membrane potential?
a.Transport of chloride into the cell
b.Transport of calcium into the cell
c.Inhibition of potassium outflow
d.Inhibition of sodium into the cell

A

Transport of chloride into the cell

18
Q

Myelination of a neuroaxon result in this:
a.Reduced length of constant of the axon
b.Increased length
c.Reduced time constant
d.Increased time constant

A

Increased length

19
Q

0.15m NaCl is __ the normal osmolality of the plasma
a.Twice
b.Half
c.Three times
d.Equal

A

Equal

20
Q

Based on lipid solubility, which one is generally correct?
a.Protonated weak acid>Unprotonated weak base
b.Unprotonated weak acid<protonated weak acid
c.Protonated weak base<Protonated weak acid
d.Unprotonated weak base<Protonated weak acid

A

Protonated weak base<Protonated weak acid

21
Q

According to Fick’s law, the rate of diffusion of a substance across the cell membrane is inversely proportional to:
a.Thickness of the membrane
b.Concentration gradient
c.Lipid solubility
d.Membrane fluidity

A

Thickness of the membrane

22
Q

Which of the following transport process is mediated by a uniport?
a.Sodium pump
b.Secondary active transport of glucose
c.Bulk flow
d.Na+ diffusion across cell membrane during development of action potential

A

Na+ diffusion across cell membrane during development of action potential

23
Q

Chloride shift or Hamburger effect is:
a. An electrogenic process
b.Mediated by a symport
c.Mediated by a uniport
d.Mediated by antiport

A

Mediated by antiport

24
Q

A cholagogue drug may not work in this species
a.Sheep
b.Deer
c.Tiger
d.Chicken

A

Deer

25
Q

In case of pancreatic enzyme deficiency, this form of triglyceride is most usefully supplemented in the diet of the patient.
a.Short-chain triglycerides
b.Medium-chain triglycerides
c.Long-chain trigylcerides
d.MCT and LCT

A

Medium-chain triglycerides

26
Q

This is not a brush border enzyme
a.Invertase
b.Maltase
c.Isomaltase
d.Colipase

A

Colipase

27
Q

In post-hepatic jaundice the predominant form of bilirubin in the blood:
a.Conjugated
b.Free
c.Urobilirubin
d.Stercobilin

A

Conjugated

28
Q

The end-product pf hemoglobin breakdown in birds that do not form bilirubin is:
a.Cholebilirubin
b.Urobilirubin
c.Lipofuscin
d.Biliverdin

A

Biliverdin

29
Q

The endogenous glucocorticoids are Cortisol and?
a. Cortisone
b.Corticosterone
c.Aldosterone
d.Prednisone

A

Corticosterone

30
Q

the T tubule in the muscle is an extension of the:
a.Endoplasmic reticulum
b.Plasma membrane
c.Nucleus
d.Golgi apparatus

A

Endoplasmic reticulum

31
Q

This substance inhibits impulse transmission in the autonomic ganglia
a.Atropine
b.Nicotine
c.Pentamethonium
d.Decamethonium

A

Pentamethonium

32
Q

In the nerve axon, which phase of action potential is caused by the inactivation of the sodium channel?
a.Upstroke
b.Absolute refractory period
c.Downstroke
d.Relative refractory period

A

Absolute refractory period

33
Q

All of the following transport processes display saturation (Michaelis-Menten) kinetics except:
a.Na-coupled active transport
b.Primary active transport
c.Facilitated diffusion
d.Simple diffusion

A

Na-coupled active transport

2 Reviewer A - Veterinary Physiology (10 decks)

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