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+ Nervous System
Anatomy
| Question | Answer |
|---|---|
| Generally conducts impulses away from cell body | axon |
| releases neurotransmitters | axon terminal |
| conducts electrical currents toward the cell body | dendrite |
| increases the speed of impulse control down the axon | myelin sheath |
| location of the nucleus | cell body |
| T/F Neuroglia support, insulate and protect cells | True |
| T/F Neuroglia demonstrate irritability and are able to excite or inhibit other cells | False - neurons |
| Releases neurotransmitters | neurons |
| chemical messengers | neurotransmitters |
| T/F Neuroglia are non-excitable in and of themselves | True |
| Nerves or neuroglia? Able to divide, nucleus contains centrioles | neuroglia |
| Nerve or Neuroglia? Nucleus contains endoplasmic reticulum; non-reproductive cells | neurons |
| Structural divisions of the nervous system | Central (brain) and Peripheral (sensory afferent, motor efferent) |
| 4 primary structures of the brain | cerebellum, cerebrum, diencephalon, brainstem |
| 4 major nerve plexuses | cervical, brachial, lumbar, sacral |
| Regional nerves in the cervical plexus | phrenic, muscular, lesser occipital |
| Regional nerves in the brachial plexus | axillary, medial, radial, ulnar |
| Regional nerves in the lumbar plexus | femoral, obturator, ilioinguinal |
| Regional nerves in the sacral plexus | sciatic, tibial, common fibular |
| Major anatomical structures in the cerebrum | 2 hemispheres, gyri and sulci, cortex (grey matter), white matter, basal nuclei |
| Major anatomical structures in the cerebellum | posterior to the brainstem, inferior to the cerebrum |
| Major anatomical structures in the diencephalon | superior to the brain stem, contains thalamus, hypothalamus, pituitary gland, pineal gland |
| Major anatomical structures in the brain stem | pons, midbrain, medulla oblongata, home of the reticular activating system, connects spinal cord to brain |