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Nervous System Ch.9
| Question | Answer |
|---|---|
| Basic unit of structure & function of the nervous system | Neuron |
| Sends Info | Axon |
| Nerve | Information transmitted in the form of electrical and chemical changes |
| Nerve Fiber | Extension of neuron cell body |
| Dendrite | Receives info as electrochemical messages |
| Three general functions of PNS | sensory, motor, integrative |
| The motor function of PNS are consciously controlled are part of the _________________ nervous system. | Somatic |
| Supporting cells of the CNS are ________________ cells. | Neuroglial |
| Cells of the CNS that divided throughout life are called ____________. | Neuroglial |
| Common features of all neurons | cell body, dendrites (receives info) and axons (send info) |
| Axons arise from the part of the cell body known as ____________ ______________. | Axonal Hillock |
| Neurilemma is composed of ________________ and _____________________. | Cytoplasm and nuclei of the Schwann cells |
| Based on structure, list the three major groups of neurons | Unipolar, bipolar and multipolar |
| Functionally, neurons maybe classified as ___________, ____________ and _________________. | Interneuron, motor and sensory |
| Junction between two neurons | Synapse |
| Bundle of nerve fibers held together by connective tissue is called a ____________. | Nerve |
| The outer membrane covering the brain that is composed of fibrous connective tissues | Pia Mater |
| Cerebrospinal fluid is found between which two meninges? | Pia Mater & Arachnoid Mater |
| White matter in the spinal cord is composed of myelinated nerve fibers and makes up nerve pathways called tracts. T or F? | True |
| Three major portions of the brain | cerebrum, cerebellum and brainstem |
| The hemispheres of the cerebrum are connected by nerve fibers called the _____________ ______________. | Corpus callosum |
| Function of the Frontal Lobes | Control of voluntary muscles and complex problem solving |
| Function of Parietal Lobes | Pain |
| Function of Temporal Lobes | Hearing and recognition of printed work (visual memory) |
| Function of Occipital Lobes | Vision |
| Dominant brain hemisphere for most of the populations is on the _____________ side. | Left |
| Cerebrospinal fluid is produced by the _____________ ___________. | Chordoid Plexuses |
| Thalamus and Hypothalamus are located in the _________________. | Diencephalon |
| Regulates temperature, heart rate, hunger, fluid and electrolytes | Hypothalamus |
| Produces emotional reactions of fear, anger and pleasure | Limbic System |
| Consciousness is dependent upon stimulation of the _________________. | Reticular Formation |
| Tremors, loss of muscle tone, gait disturbance and a loss of equilibrium maybe damage due to ______________________. | Cerebellum |
| Peripheral Nervous System (PNS) has two divisions | Autonomic and Somatic |
| Part of the nervous system that functions without conscious control is the ___________________ nervous system. | Autonomic |
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n2biology
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