KIN 3513 Chapter : Topic 4
15 Mar 2019
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Chapter 4 the neuromotor basis for motor control. Neurons: the general structure, cell body, dendrites receive information, axons most have 1 axon. Sends information to the next neuron: types of neurons, sensory (afferent, motor (efferent) Nerve cells: synapses convey messages, electrical, most are neurotransmitters (chemicals) (strengthened with activity and weakened without) Muscles: muscles produce force by contracting, force-length relationship, motor unit. Is the motor neuron and the muscle fibers that it innervates: number of muscle fibers in a motor unit are different. Trunk rotation (very small number: extrapyramidal tracts (move rigidly if there"s something wrong with these tracts) Inhibition of flex and extensor muscles of hands and fingers. Brain: 1012 to 1014 neurons with each having up to 104 synaptic connections, has functional distinct centers, cerebrum, diencephalon, cerebellum, and the brainstem, 1. Diencephalon: second component of the forebrain, thalamus, receiving, integrating, attention, mood, pain, hypothalamus, homeostasis regulation, endocrine system (responsible for growth development, mood, transporting info to hormones, 3.
