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3 Exam
The Nervous System
| Question | Answer |
|---|---|
| These are the effectors of the nervous system that generally provide the responce. | Muscles and glands |
| True or false:The nervous system sends AP to the CNS. | True |
| True or false: Action Potential on motor neurons give the nervous system responce. | True |
| True or False: The nervous system monitors changes that occur inside and outside the body. | True |
| Brain, spinal cord and organs are structures of? | The central nervous system (CNS) |
| Intergration (command center), interpreting sensory information and issuing outgoing instructions are all functions of? | The CNS |
| The periperal nervous system (PNS) is made of? | Nerves that extend from the brain and spinal cord. |
| These carry impulses to and from the spinal cord. | Spinal nerves |
| These carry impulses to and from the brain. | Cranial nerves |
| What do the sensory (afferent) neurons of the PNS do? | Carry AP/information TO the CNS |
| What do the motor (efferent) neurons of the PNS do? | Carry AP/impulses AWAY from the CNS |
| What are the two subdivisions of the motor (efferent) division of the PNS? | Somatic nervous system and the Autonomic nervous system |
| Which glial cells are sbundant, star-shaped and protect the cell by bracing the neurons? | Astrocytes |
| These glial cells form a barrier between capillaries and neurons; they control the chemical enviroment of the brain. | Astrocytes |
| These glial cells are spiderlike phagocytes that dispose of debris and destroy bacteria. | Microglia |
| These glial cells line the cavities of the brain and spinal cord. | Ependymal cells |
| These cells cillia assist with the production of and circulation of cerebrospinal fluid. | Ependymal cells |
| These cells form the myelin sheath tjat wraps around the nerve fibers in the CNS; also produce the myelin sheath. | Oligodendrocytes |
| These cells protect neron cell bodies. | Satellite cells |
| These cells form the myelin sheath in the PNS. | Schwann cells |
| True or false: 1/2 of the brain mass is glial cells. | True |
| What is the whitish, fatty material that covers the PNS axons? | The myelin sheath |
| These are clusters of cell bodies within the white matter of the CNS. | Nucleus |
| These are collections of cell bodies that are outside of the CNS but inside the PNS. | Ganglia |
| This is the location of cell bodies and unmyelninated fibers. | Gray matter |
| A fiber is also known as? | Long axon |
| Bundles of nerve fibers(axons)in the CNS, that are wrapped in connective tissue. | Tracts |
| This collects the myelinated fibers (tracts) | White matter |
| These are bundles of nerve fibers (axons) in the PNS, that are wrapped in connective tissue. | Nerves |