HSE204 - Study Area 2, Topic 1: Neuromuscular mechanisms

rob.nash1984
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Deakin 2014

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Question Answer
Cell Body / Soma Contains the nucleus; metabolic centre maintains homeostasis
Axons Send information to other structures
Dendrites Receive information Located around cell body
Axon Terminals Send efferent information to other neurons
Sensory / Afferent Neurons Send info to the CNS
Motor / Efferent Neurons Carry information away from CNS to effectors
Interneurons Within the CNS; Work as connections between motor and sensory neurons
Glial Cells Provide nutrition and support for neurons
Cerebral Cortex - Frontal Lobe Function Voluntary movement control. Contains Supplemental Motor Area (SMA); Premotor Cortex; Primary Motor Cortex
Cerebral Cortex - Parietal Lobe Function Perception of sensory info. Contains primary somatosensory cortex; sensory association areas.
Cerebral Cortex - Occipital Lobe Function Perception of visual info
Cerebral Cortex - Temporal Lobe Function Areas important for memory
Function of the Sensory Cortex Receive sensory and motor information; Learning of movement;
Associations Areas Functions Distributed throughout cortex; Associating and piecing together information from different areas.
Motor Areas Functions Planning, preparation and execution of movements
Basal Ganglia Subcortical; Contains 4 neuclei; Receives info fron cerebral cortex and brainstem; Critical in scaling and modifying parameters of movement (velocity, amplitude and direction)
Thalamus Group of nuclei in diencephalon. Receives and integrates sensory information; Filters and gates irrelevant information
Cerebellum / "Small Brain" Located below and behind cerebrum. Coordinates and monitors movement, mainly error detection and correction.
Alpha Motor Neurons Innervate skeletal muscle
Motor Unit Alpha neuron and all muscle fibres it innervates
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