Anatomy & Physiology
1st Edition
ISBN: 9781938168130
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher: OpenStax College
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Textbook Question
Chapter 14, Problem 22RQ
Which region of the frontal lobe is responsible for initiating movement by directly connecting to cranial and spinal motor neurons?
- prefrontal cortex
- supplemental motor area
- premotor cortex
- primary motor cortex
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Chapter 14 Solutions
Anatomy & Physiology
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- Why are the different regions of the cerebellum involved in this complex motor learning? What might prevent someone from being able to learn to ride a bike? Are there disorders that might prevent this kind of motor function? Is there a correlation between the learning age and the stage of physical development?arrow_forwardHow does the posterior parietal cortex contribute to movement? The premotor cortex? The supplementary motor cortex? The prefrontal cortex?arrow_forwardBased on the attached figure (Fig. Box 18B of the textbook), what is the output structure of the basal ganglia for the limbic loop? NON-MOTOR LOOPS Oculomotor loop Prefrontal loop Limbic loop MOTOR LOOPS Body movement loop Primary motor, premotor, supplementary motor cortex Frontal eye field, supplementary eye field Frontal cortex Cortical input Thalamus Pallidum Striatum Motor, premotor, somatosensory cortex Putamen Cortical targets Cortical targets Dorsolateral prefrontal cortex Posterior pariétal, prefrontal cortex Dorsolateral prefrontal cortex Caudate (body) Anterior caudate Cortical targets Anterior cingulate, orbitofrontal cortex Amygdala, hippocampus, orbitofrontal, anterior cingulate, temporal cortex Ventral striatum (nucleus accumbens) Ventral HA Globus pallidus, internal segment Globus pallidus, Internal segment; substantia nigra pars reticulata Globus pallidus, internal segment substantia nigra pars reticulata pallidum Ventral lateral and ventral anterior nuclei Mediodorsal…arrow_forward
- Dorothy received a severe blow to her head and can no longer move the fingers on her right hand The area of her brain that may be damaged is the right somatosensory cortex left parietal lobe left motor cortex central neural cortexarrow_forwardwhat happens if only the dorsal white matter is damaged on only ONE side of the spinal cord, including whether or not both sensory tracts are impacted on that side of the body AND whether or not motor control damagedarrow_forwardThe lateral motor system includes :-a- the lateral Reticulospinal tractb- the lateral corticospinal tractc- the lateral vestibulospinal tractd- all the above tractsarrow_forward
- Why is Parkinson's disease a movement disorder?arrow_forwardThe frontal lobe is associated with which of the following functions: a Motor b Visual c Auditory d sensoryarrow_forwardMark the brain area that is not associated with planning movements. O primary motor cortex (M1) O supplementary motor area (SMA) premotor cortexarrow_forward
- Explain the descending pathway from the brain where Mr. Dexter decides to move his right leg to the actual movement of his quadriceps. (Use complete sentences.) Use key words in this order: primary motor cortex in precentral gyrus, frontal lobe, descending tract, decussate, ventral horn with motor neuron in lumbar spinal cord, ventral root, spinal nerve, sciatic nerve in lumbosacral plexus, muscles to move leg (ie. quadriceps)to take a step.arrow_forwardCommunication between the motor cortex and the spinal cord is likely to be mediated by fiber tracts. commissural O corpus callosum O projection association none of the answers. 身arrow_forwardCorticospinal tract originates from all the following areas, except :-a- premotor area in the frontal lobe b- prefrontal area in the frontal lobec- supplemental motor area in the frontal lobed- somatic sensory area in the parietal lobearrow_forward
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