HTHSCI 1H06 Chapter Notes - Chapter 325-329: Extracellular Fluid, Skeletal Muscle, Resting Potential
10 Oct 2017
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Recall that a ganglion refers to a cluster of neuronal cell bodies located in the pns. By contrast, a nucleus is a cluster of neuronal cell bodies located in the cns. Nerve is a bundle of axons that is located in the pns. Cranial nerves connect the brain to the periphery, whereas spinal nerves connect the spinal cord to the periphery. A tract is a bundle of axons that is located in the cns. White matter is composed primarily of myelinated axons. Blood vessels are present in both matters. I the spinal cord, the white matter surrounds an inner core of gray matter that is shaped like a butterfly. Neurotransmitter: molecule released from synaptic vessel and excites another neuron muscle fiber or gland cells. In response to graded potential, the axon of the interneuron forms a nerve action. Suppose you want the pen to write a letter, the nervous system would respond in the following way.
