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Unformatted text preview: impulses from the sensory receptors to the interneuron. Interneuron: Interneurons are found in the brain and the spinal cord, and act as an integration centre for nerve impulses. Motor Neuron: Motor neurons conduct impulses from the interneurons to the effectors. 4. Indicate the direction of impulse transmission down the neuron The impulse transmission would travel from the sensory neurons, towards the spinal cord and the brain, and then back down to the motor neurons/ effectors. 5. Describe the functions of of the myelin sheath: The myelin sheath is a fatty, insulating layer around the axon of a nerve cell, composed of Schwaan cells. It protects neurons and speeds up the rate of nerve impulse transmissions. 6. Hypothesize how the impulse coming from the motor neuron might reach the muscle Fbre (effector): I believe that the impulse coming from the motor neuron will reach the muscle Fbre by moving down the motor neuron, and jumping from the motor end plates, onto the muscle Fbre (effector)....
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- Spring '16
- myelin sheath, grey matter