Midbrain Lesions & Neurotransmitters

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| By Ellis018
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Ellis018
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Quizzes Created: 7 | Total Attempts: 13,506
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  • 1/11 Questions

    This syndrome knocks out the red nucleus?

    • Parinauds syndrome
    • Benedikts syndrome
    • Webers syndrome
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Midbrain Lesions & Neurotransmitters - Quiz
About This Quiz

This lecture is given by Dr. Leo. It is titled neurotransmitters on mediasite but it is really on midbrain lesions. . . Carryon!. . . Wait some of it is neurotransmitters!

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  • 2. 

    Used as an antihistamine in depressed pts. Noticed that it blocked uptake of norepinephrine

    • Ipraniazid

    • Imipramine

    • Reserpine

    Correct Answer
    A. Imipramine
    Explanation
    Also know as tofranil

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  • 3. 

    Lesion by the posterior commissure can cause this...

    • Paralysis of downward gaze

    • Paralysis of upward gaze

    • Paralysis of lateral gaze

    • Paralysis of medial gaze

    Correct Answer
    A. Paralysis of upward gaze
    Explanation
    Lesion by the posterior commissure can cause paralysis of upward gaze. The posterior commissure is a structure in the brain that is involved in the control of eye movements. When it is damaged or affected by a lesion, it can result in the inability to move the eyes upward. This is known as paralysis of upward gaze. The other options, paralysis of downward gaze, lateral gaze, and medial gaze, are not associated with lesions in the posterior commissure.

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  • 4. 

    Midbrain lesion with paralysis of upward gaze

    • Parinaud's syndrome

    • Benedikt's syndrome

    • Weber's syndrome

    Correct Answer
    A. Parinaud's syndrome
    Explanation
    Parinaud's syndrome is a condition characterized by paralysis of upward gaze, which is consistent with the given correct answer. This syndrome is caused by a lesion in the midbrain, specifically affecting the vertical gaze centers. Other symptoms may include pupillary abnormalities, convergence-retraction nystagmus, and eyelid retraction.

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  • 5. 

    This midbrain lesion results in contralateral UMN signs and ipsilateral 3rd nerve palsy

    • Parinauds syndrome

    • Benedikts syndrome

    • Webers syndrome

    Correct Answer
    A. Webers syndrome
    Explanation
    Weber's syndrome is a midbrain lesion that presents with contralateral upper motor neuron (UMN) signs and ipsilateral third nerve palsy. This means that there will be weakness and spasticity on the side opposite to the lesion, along with paralysis of the eye muscles on the same side as the lesion. Therefore, Weber's syndrome is the correct answer.

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  • 6. 

    The raphe nucleus produces this

    • Epinephrinie

    • Norepinephrine

    • Serotonin

    • Dopamine

    Correct Answer
    A. Serotonin
    Explanation
    The raphe nucleus is known to produce serotonin. Serotonin is a neurotransmitter that plays a role in regulating mood, sleep, appetite, and other important functions in the brain. It is involved in various physiological processes and is often associated with feelings of well-being and happiness. Serotonin is also targeted by many antidepressant medications, as imbalances in serotonin levels have been linked to depression and other mood disorders. Therefore, it is reasonable to conclude that the raphe nucleus produces serotonin.

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  • 7. 

    This drug was initially given as an antihistamine but it was noted to cause depression with correlation of lower serotonin levels

    • Iproniazid

    • Reserpine

    • Imipramine

    Correct Answer
    A. Reserpine
    Explanation
    1st piece of the puzzle

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  • 8. 

    This drug was initially given to pts with TB. It calmed the pts down so they gave it to patients in psych wards. They then noticed that the drug was blocking MAO

    • Ipraniazid

    • Imipramine

    • Reserpine

    Correct Answer
    A. Ipraniazid
    Explanation
    Also known as marsilid

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  • 9. 

    The locus ceruleus produces

    • Epinephrine

    • Norepinephrine

    • Serotonin

    • GABA

    Correct Answer
    A. Norepinephrine
    Explanation
    The locus ceruleus is a small nucleus in the brainstem that is responsible for producing and releasing norepinephrine. Norepinephrine is a neurotransmitter that plays a role in various functions such as attention, arousal, and stress response. It is involved in regulating mood, sleep, and heart rate. Therefore, it is the correct answer because the locus ceruleus is known for producing norepinephrine, not epinephrine, serotonin, or GABA.

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  • 10. 

    Depression is due to a lowering of this molecule?

    • Norepinephrine

    • Epinephrine

    • Serotonin

    • Dopamine

    Correct Answer
    A. Serotonin
    Explanation
    Depression is often associated with a decrease in serotonin levels. Serotonin is a neurotransmitter that plays a crucial role in regulating mood, emotions, and sleep. When serotonin levels are low, it can lead to feelings of sadness, hopelessness, and a lack of interest in activities. Therefore, a lowering of serotonin is believed to contribute to the development of depression.

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  • 11. 

    This midbrain lesion creates a contralateral tremor & ipsilateral 3rd nerve palsy

    • Parinauds syndrome

    • Benedikts syndrome

    • Weber's syndrome

    Correct Answer
    A. Benedikts syndrome
    Explanation
    Benedikt's syndrome is a midbrain lesion that presents with a contralateral tremor and an ipsilateral third nerve palsy. This combination of symptoms is characteristic of Benedikt's syndrome. Parinaud's syndrome, on the other hand, is characterized by vertical gaze palsy and pupillary abnormalities, while Weber's syndrome is characterized by a contralateral hemiparesis and ipsilateral oculomotor nerve palsy. Therefore, the correct answer is Benedikt's syndrome.

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  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 23, 2010
    Quiz Created by
    Ellis018

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