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properties of the action potential  rising phase  overshoot  falling phase  undershoot What happens when the current reaches threshold?  generate APs at a low rate What happens when current increase?  rate of AP generation increases increases the frequency of AP (all or none situation) What does the firing frequency of APs reflect?  the magnitude of the DEPOLARIZING current (since hyperpolarizing would not allow threshold to be reached) ~ 1 ~ for inquiry mail ...

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80 pages

Written in 2024/2025

Grade A+

Passit

NROB60 CHAPTER 4 Exam Questions With 100% Verified Answers What is the possible consequence of neural tube defects (spinal bifida) - answerSpinal bifida occulta (mildest type, might not even notice) — when the neural tube does not fully close near the caudal portion of the spine Meningocele: a sac of fluid comes through an opening in the back Myelomeningocele (very severe leads to other issues) part of spinal cord and nerves are contained within the sac of fluid and damaged What is ane...

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4 pages

Written in 2024/2025

Grade A+

Brainbarter

NROb60: Final Exam Questions and Answers 2025

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157 pages

Written in 2024/2025

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| Correct Answers | 2024/ 2025 What occurs during lissencephaly  The ventricles are dramatically enlarged Subcortical white matter is nearly absent Sulci and gyri are completely absent Children ten to have very small heads What are the two forces displaced when ions moving across the membrane  1. Electrostatic forces: positive ions will always want to move to a negative solution 2. Diffusion: particles move down their concentration gradient (high to low concentration ) 3. Io...

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7 pages

Written in 2024/2025

Grade A

Passit

lecture 6 - The first phase of human brain-imaging involved X-ray based methods, such as-----  pneumoencephalography pneumoencephalography - how does this work generally , what are the cons of this method  •Air is injected into subarachnoid space to improve X-ray contrast •Makes the ventricles more translucent than surrounding tissue - specifically the lateral ventricles - You can see the c shape of the lateral ventricles - Was useful for visualizing ventricular anomalies caus...

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157 pages

Written in 2024/2025

Grade A+

Passit

Action Potential  Dramatic redistribution of electrical charge across membrane. Rapid reversal of charge across membrane such that the interior becomes relatively positive (depolarization caused by influx of sodium) How to determine MP  Microelectrode in cell, voltmetre used to measure electrical potential between tip of intracellular and extracellular microelectrode Membrane potential at rest  ~-65mV Key parts of Action Potential  Rising phase, overshoot, falling phase,...

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47 pages

Written in 2024/2025

Grade A+

Passit

NROb60 - Final Exam Questions With 100% Verified Answers Lecture 6 - The first phase of human brain-imaging involved X-ray based methods, such as----- - answerpneumoencephalography pneumoencephalography - how does this work generally , what are the cons of this method - answer•Air is injected into subarachnoid space to improve X-ray contrast •Makes the ventricles more translucent than surrounding tissue - specifically the lateral ventricles - You can see the c shape of the lateral ven...

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85 pages

Written in 2024/2025

Grade A+

Brainbarter

NROB60 FINAL NOTES Exam Questions With 100% Verified Answers Properties of the action potential - answerrising phase overshoot falling phase undershoot What happens when the current reaches threshold? - answergenerate APs at a low rate What happens when current increase? - answerrate of AP generation increases increases the frequency of AP (all or none situation) What does the firing frequency of APs reflect? - answerthe magnitude of the DEPOLARIZING current (since hyperpolarizing wou...

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38 pages

Written in 2024/2025

Grade A+

Brainbarter

NROB60 Exam Questions With 100% Verified Answers Action Potential - answerDramatic redistribution of electrical charge across membrane. Rapid reversal of charge across membrane such that the interior becomes relatively positive (depolarization caused by influx of sodium) How to determine MP - answerMicroelectrode in cell, voltmetre used to measure electrical potential between tip of intracellular and extracellular microelectrode Membrane potential at rest - answer~-65mV Key parts of Acti...

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18 pages

Written in 2024/2025

Grade A+

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24 pages

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