Sara Ruiz López-
Test por , creado hace más de 1 año

test presentaciones transporte final

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Sara Ruiz López-
Creado por Sara Ruiz López- hace más de 8 años
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Test Transporte

Pregunta 1 de 17

1

Which conditions for viscosity and % of occlusion are required for increasing the volumetric flow rate during peristalsis in intestine?

Selecciona una de las siguientes respuestas posibles:

  • Low viscosity and low % of occlusion

  • High viscosity and high % of occlusion

  • Low viscosity and high % of occlusion

  • High viscosity and low % of occlusion

Explicación

Pregunta 2 de 17

1

What are the types of axonal transport in the nervous system?

Selecciona una de las siguientes respuestas posibles:

  • Long and short axonal transport

  • Slow (bidirectional) and fast (unidirectional) axonal transport.

  • Fast(bidirectional) and slow(unidirectional) axonal transport.

  • Chemical and electrical axonal transport

Explicación

Pregunta 3 de 17

1

Why is fetal hemoglobin different to adult hemoglobin?

Selecciona una de las siguientes respuestas posibles:

  • Maternal blood in placenta has more o2 so fetal hemoglobin has higher affinity

  • Maternal blood in placenta has less o2 so fetal hemoglobin has lower affinity

  • Maternal blood in placenta has less o2 so fetal hemoglobin has higher affinity

  • Maternal blood in placenta has more o2 so fetal hemoglobin has lower
    affinity

Explicación

Pregunta 4 de 17

1

Concerning a daughter vessel sufficiently small for not being considered important for perturbation of the flow in a bifurcation, which is the branching angle expected for the vessel with respect to the parent vessel?

Selecciona una de las siguientes respuestas posibles:

  • 45º­50º

  • <20º

  • 70º-­90º

  • Cannot be determined

Explicación

Pregunta 5 de 17

1

What happens in the carotid bifurcation when the cross­section increases in the outgrowth ?

Selecciona una o más de las siguientes respuestas posibles:

  • Part if the flow goes through external carotid and some enters temporaly external carothid where the outgrowth is located and return before entering the internal carotid.

  • A positive pressure gradient is created.

  • The flow is divided in two and depending on the particles position they enter internal or external carotid

Explicación

Pregunta 6 de 17

1

Which are the conditions for the lipid­mediated transport to occur?

Selecciona una de las siguientes respuestas posibles:

  • Low molecular weight and hydrophilicity.

  • Low molecular weight and high lipophilicity or lipid solubility.

  • Lipophilicity and high number of hydrogens bonds.

  • Low molecular weight and presence of specific carriers.

Explicación

Pregunta 7 de 17

1

Which mechanisms allow a correct oxygen supply to the embryo?

Selecciona una o más de las siguientes respuestas posibles:

  • Higher affinity and higher concentration of fetal hemoglobin

  • Bohr effect

  • Uterus contractions

Explicación

Pregunta 8 de 17

1

Choose the correct answer

Selecciona una de las siguientes respuestas posibles:

  • Viscosity is always inversely proportional to vessel diameter.

  • Pressure is higher in capillaries than in arteries.

  • When a blood vessel divides in two equal branches, both form the same angle with the original.

  • Blood flow is directly proportional to radius square.

Explicación

Pregunta 9 de 17

1

Why is the zebra fish ideal for research projects?

Selecciona una o más de las siguientes respuestas posibles:

  • Because it's cheaper than mice

  • Because we know its genome

  • Because its life cycle is short

Explicación

Pregunta 10 de 17

1

Which ion causes the depolarization phase and which ion causes the repolarization phase?

Selecciona una de las siguientes respuestas posibles:

  • Na+ causes the depolarization and K+ the repolarization

  • K+ causes the depolarization Na+ causes the repolarization

Explicación

Pregunta 11 de 17

1

What are the differences between diffusion and facilitated diffusion?

Selecciona una de las siguientes respuestas posibles:

  • Facilitated diffusion decreases the rate of diffusion and their carriers can be saturated

  • Facilitated diffusion is an active transport in which carriers can not be saturated whereas diffusion is a passive transport

  • In diffusion the molecules pass directly and the rate of diffusion is linear with concentration whereas facilitated diffusion carriers increase the rate of diffusion

  • The rate of diffusion in facilitated diffusion is linear with the concentration

Explicación

Pregunta 12 de 17

1

Which are the main physical mechanisms used by the dialyzer membrane when filtering solute from blood?

Selecciona una de las siguientes respuestas posibles:

  • Only diffusion.

  • Diffusion, convection and adsorption.

  • Osmosis and hydrostatic pressure.

  • None of the above

Explicación

Pregunta 13 de 17

1

Why is inflammation dangerous for the blood brain barrier?

Selecciona una de las siguientes respuestas posibles:

  • Because it prevents passage of substances.

  • Because it may provoke a myocardial infarction.

  • Because it provokes apparition of gaps and harmful substances may leak.

  • Because it increases blood flow rate.

Explicación

Pregunta 14 de 17

1

What is the most important factor that determines how much O2 binds to hemoglobin?

Selecciona una de las siguientes respuestas posibles:

  • Acidity

  • P(O2)

  • P(CO2)

  • BPG

Explicación

Pregunta 15 de 17

1

What kind of transport requires Energy in the form of ATP to function properly?

Selecciona una de las siguientes respuestas posibles:

  • Diffusion

  • Passive Transport

  • Active transport

Explicación

Pregunta 16 de 17

1

Which transport mechanism in the blood brain barrier is triggered by an electrostatic interaction between a positively charged substance and a negatively charged plasma membrane surface?

Selecciona una de las siguientes respuestas posibles:

  • Carrier-mediated efflux

  • Bulk-phase endocytosis

  • Receptor-mediated endocytosis

  • Absorptive-mediated transport

Explicación

Pregunta 17 de 17

1

How does the O2 pressure in the blood flow of an interstitial fluid vary when doing exercise respect to the normal state?

Selecciona una de las siguientes respuestas posibles:

  • The O2 pressure will be lower than in the normal state.

  • The O2 pressure will be higher than in the normal state.

  • The O2 pressure variation will not be significant respecting the normal state.

Explicación

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