Variants Physio at Daugavpils University | Flashcards & Summaries

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Which transport mechanisms can transport sodium ions into the cell?

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Na+/K+ pump

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Where are preganglionic neuron cell bodies located for activation of pupillary dilator (radial) muscle?

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Spinal cord (medulla spinalis) level Th1-Th2

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What is correct about the absolute refractory period of nerve cell?

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It begins from the beginning of local depolarization

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Which of the following are secondary active transport mechanisms?

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Na+ glucose symport

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What process is responsible for the change in membrane potential during repolarization?

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Inhibition of the Na+-K+ pump

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Which ion influx in the postsynaptic cell can cause EPSP?

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Na+

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What is correct about neuromuscular junction?

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In the neuromuscular junction are no SNARE-proteins

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In a .... contraction the force generation does not change (fill in blank)

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Isotonic = same force

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What are late signs of complete spinal cord transection at the level of thoracic 1st segment?

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Increased muscle tone below the transection level

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A healthy person is trying to lift a heavy load, and his muscles “give out”. There are no apparent problems in neuromuscular function. What is the most likely mechanism for the abrupt cessation of skeletal muscle contraction?
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The inactivation of stretch receptors in the Golgi tendon organs

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The complete tetanus:

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Lead to higher calcium concentration in the muscle than single contractions

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Which transport mechanisms can transport sodium ions out of the cell?

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Na+ electrokinetic transport if cell is at resting membrane potential

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Q:

Which transport mechanisms can transport sodium ions into the cell?

A:

Na+/K+ pump

Q:

Where are preganglionic neuron cell bodies located for activation of pupillary dilator (radial) muscle?

A:

Spinal cord (medulla spinalis) level Th1-Th2

Q:

What is correct about the absolute refractory period of nerve cell?

A:

It begins from the beginning of local depolarization

Q:

Which of the following are secondary active transport mechanisms?

A:

Na+ glucose symport

Q:

What process is responsible for the change in membrane potential during repolarization?

A:

Inhibition of the Na+-K+ pump

Mehr Karteikarten anzeigen
Q:

Which ion influx in the postsynaptic cell can cause EPSP?

A:

Na+

Q:

What is correct about neuromuscular junction?

A:

In the neuromuscular junction are no SNARE-proteins

Q:

In a .... contraction the force generation does not change (fill in blank)

A:

Isotonic = same force

Q:

What are late signs of complete spinal cord transection at the level of thoracic 1st segment?

A:

Increased muscle tone below the transection level

Q:
A healthy person is trying to lift a heavy load, and his muscles “give out”. There are no apparent problems in neuromuscular function. What is the most likely mechanism for the abrupt cessation of skeletal muscle contraction?
A:

The inactivation of stretch receptors in the Golgi tendon organs

Q:

The complete tetanus:

A:

Lead to higher calcium concentration in the muscle than single contractions

Q:

Which transport mechanisms can transport sodium ions out of the cell?

A:

Na+ electrokinetic transport if cell is at resting membrane potential

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