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A&P Test 2
| Term | Definition |
|---|---|
| Central Nervous System (CNS) | Made up of Brain and Spinal Cord |
| Peripheral Nervous System (PNS) | Made up of Nerve fibers extending to other parts of the body |
| Make up the PNS | Made up of Cranial Nerves(12) and spinal nerves(31) |
| Afferent Division | carries information from censors to CNS |
| Efferent Division | carries information from CNS to effector organs |
| Autonomic Nervous System | Made up of the Parasympathetic ANS and Sympathetic ANS |
| Autonomic Nervous System | Coordinates activity of visceral structures |
| Somatic Nervous System | motor neurons that supply skeletal muscle |
| Neuron | Nerve cell; functional and structural unit of NS |
| Nucleus (of CNS) | clump of neuronal cell bodies outside of CNS |
| Nerve | Bundles of axons outside of CNS |
| Ganglia | Bundle of axons inside within CNS |
| Neuroglia | CT inside CNS - glial cells inside the CNS make the CT |
| Neuron components | dendrites, cell body, nucleus, axon hillock, axon, axon terminals |
| neurons may have... | more than one dendrite, usually only one axon |
| Nueroplasm | nerve cytoplasm |
| Axoplasm | axon cytoplasm |
| Neurolemma | nerve cell membrane |
| Nissle Bodies | dark staining cytoplasmic granules |
| Myelin | white sheath of fatty material |
| myelin sheath | many layers of cell membrane of a specialized glial cell wrapped around axons |