Human head and neck Brainstem

Brain Stem Lesions A59 Brain Stem lesionsBrain Stem Lesions A59 Brain Stem lesions
Ipsilaterally – lesion of cranial nerves (lmn paralysis or loss of sensation) – specifies longitudinal site. Brainstem
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Upper Motor Neuronal Control—BrainstemUpper Motor Neuronal Control—Brainstem
Discuss the neural centers that give rise to medial descending projections from the brainstem to lower motor neurons. Brainstem
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Main effect of surgeryMain effect of surgery
Peak mni coordinates for regions that were significantly activated in response to the “main effect of surgery”. Brainstem
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Brain Stem ExaminationBrain Stem Examination
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Important landmarks of brainstem strutures:Important landmarks of brainstem strutures:
Abducens Nucleus (cn 6) = lateral to medial longitudinal fasciculus (mlf); in floor of 4th ventrical. Brainstem
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Brain stem control of breathingBrain stem control of breathing
Breathing is an involuntary process that is controlled by the medulla and pons of the brain stem. The frequency of normal, involuntary breathing is controlled by three groups of neurons or brain stem centers: the medullary respiratory. Brainstem
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Slide 1 Slide 2Slide 1 Slide 2
The important motor areas of the frontal lobe include the primary motor cortex (M1), the premotor cortex (PM), the supplementary motor area (sma), and the cingulate motor area. We know little about the function of the cingulate. Brainstem
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The Motor System: Lecture 3 Sensory system of muscles Refer to Slide 1The Motor System: Lecture 3 Sensory system of muscles Refer to Slide 1
This region of the intrafusal fiber is called a spindle. Stretching the spindle causes the afferent neuron to produce action potentials. This is the primary mechanism with which the cns senses length changes in the muscle. Brainstem
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