Unit 4.1 Flashcards
What are the various parts of the motor cortex?
Primary motor cortex
Premotor area
Supplemental motor area
________ is a part of the motor cortex that is involved in fine motor control such as hand written or typing functions
Primary motor cortex
________ is a part of the motor cortex that is involved in muscle muscles moving together for a specific task such as catching a football or kicking a ball.
Premotor cortex
________ is a part of the motor cortex that is involved in moving limbs on opposing sides of your body, such as walking or maintaining balance during moving.
Supplemental motor area
What parts of your body does majority of the motor cortex control?
Hands, face, and feet
_________ is an area of your brain that is important for word formation and is located in the area of the brain that controls respiratory function for speech
Broca’s area
________ is located in the area of the brain that controls respiratory function for speech
Broca’s area
Damage to Broca’s area will result in?
Decreased speech capabilities
Damage to the eye fixation and head rotation region will result in
The patient would not be able to voluntarily move their eyes towards different objects.
Damage to the eye fixation and head rotation region would cause the patient’s eyes to do what?
Their eyes would be locked involuntarily onto other objects.
What area of the brain does damage to the eye fixation and head rotation region effect?
The occipital visual cortex
_________ is an area of the brain that is important for fine motor skills of the hands and finger.
Hands skills area
What is motor apraxia?
Inability to preform find hand movement
Damage to the hand skills area will result in?
Motor apraxia
What are the various pathways of the cortical motor signal transmission?
Direct pathway
Indirect pathway
Talk about the direct pathway of the cortical motor signal transmission?
Its a path that contains the corticospinal tract that provides information for discrete detailed movements directly from the cortex to the spinal cord
Talk about the indirect pathway of the cortical motor signal transmission?
This section involves signaling of the lower brain area which communicates indirectly by preventing unwanted muscle contractions from competing w/ voluntary movements
Where does the indirect pathway of the cortical motor signal transmission send signals to within the brain?
The basal ganglia, cerebellum, and brainstem nuclei
Where are the locations in which the corticospinal tract originates?
Primary motor cortex
Supplementary motor area
Somatic sensory area
Where does the corticospinal fibers synapse at?
in cord gray matter
Where are the corticospinal fibers primarily crossing?
Pyramids of the medulla
Certain corticospinal fibers do not cross at the medulla, where do they go?
They pass ipsilaterally down the cord and into the ventral corticospinal tract
________ give rise to large fibers with fast transmission rates.
Betz cells
________ is the primary neural cell type in the corticospinal tract, and is important for vision-guided motor function and cognition.
Betz cells
