Lecture 7 - Control of Movement Flashcards
Draw a diagram of the brain; label and explain the 4 segments
check pic page 2 of 7/8/18 slides
Draw a diagram of the prefrontal lobe
check pic page 2 of 7/8/18 slides
Draw diagram of central nervous system
check pic page 2 of 7/8/18 slides
Draw a diagram of the motor system
check pic page 3 of 7/8/18 slides
Draw a diagram of motor cortex homunculus
page 3
What is the basil ganglia
it is strongly connected with cerebral cortex and thalamus but not direct. This plays a role in determining what movement planned by the cortex gets executed and can abort planned movements; it prevents unsuitable movement from occurring.
Degeneration may result in:
HYPOkinesia - loss of movement
HYPERkinesia - excess movement
What is focal Dystonia?
it is task specific - the loss of inhibitory function in the basal ganglia and motor cortex
What is the cerebellum
it contributes to co-ordination, precision and timing of the movements
what is the cerebral cortex
a sheet of neural tissue on the outside of the cerebrum. it is divided into loves which control specific functions e.g. movement, vision, hearing, touch
What is the brainstem
it serves as a conducting zone where the main part of the brain sends signals to initiate the movement. it is in charge of the basic bodily functions such as breathing, blood pressure and digestion
What is the spinal cord
Bundles of nerve tissue that is protected by the backbones. it is the pathway which connects the brain to the muscle
What are sensory receptors?
A nerve which responds to a specific stimuli, which tells the brain what is going on in the environment.
e. g. proprioceptors respond to the stretching of the muscle, so it relays information to the brain that the muscles are being stretched.
e. g. a taste receptor recognises a specific taste and tells the brain if it is sweet, bitter, sour etc
What is the thalamus
acts as a relay station and sorts sensory information that is on its way to the cerebral cortex
What are the yips
a motor phenomenon affecting golfers. it is involuntary movements during chipping and putting (fine motor control)
