Term
| Basic Components of the Nervous System |
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Definition
- Stem cell (germinal cell)
- Precursor
- Blasts
- Specialized cells
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| single, undifferentiated cell that possesses multi-potential qualities. |
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| Cells that are produced from stem cells in the developing (embryonic) brain |
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Definition
Tract - consists of a large collection of axons that project to, or away from a cluster, or layer of cells. Fiber pathway that carries information from one place to another WITHIN the central nervous system.
Nerves - when tracts (which are fiber pathways) are OUTSIDE the CNS they are called NERVES, but once they enter the CNS they are called tracts. |
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| Primitive nervous system cell that differentiate into neurons or glia cells which are the two basic brain cell types, |
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Neurons
- motor neuron
- sensory neuron
- interneuron
Glia
- Ependymal cell
- Oligodendrocyte
- Astrocyte
- Microglia
- Schwann
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| sends signals from the brain and spinal cord to muscles |
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| Brings information to the central nervous system from sensory receptors |
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| communicates between sensory and motor neurons |
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| secretes cerebral spinal fluid |
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| forms myelin in brain and spinal cord |
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| nourishes and supports cells |
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defensive function - brain injury, infection.
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| forms myelin in the periphery |
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Definition
Dorsal
Lateral
Medial
Ventral
Anterior
Posterior |
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| Nervous system arrangement |
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Definition
ipsilateral
contralateral
Bilateral
Proximal
Distal
Afferent
Efferent |
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Definition
| if two structures lie on the same side |
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| if two structures lie on opposite sides |
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| structures that are close together |
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| structures that are far from one another |
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| projections that carries messages toward a given structure |
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| projections that carries messages away from the structure |
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Term
| Overview of Nervous System Structure |
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Definition
Central Nervous System
Somatic Nervous System
Autonomic Nervous System |
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Definition
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Definition
spinal and cranial nervous.
Nerves to and from sensory organs and the muscles, joints and skins.
Produces movement and transmits sensory information to the CNS including vision, hearing, pain, temperature, touch |
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Definition
Parasympathetic (calming)
Sympathetic (arousing) |
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Term
| The Three Regions of the Developing Primitive Brain |
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Definition
Prosencephalon
Mesencephalon
Rhombencephalon |
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Definition
| responsible for olfaction. FRONT brain |
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Definition
| MIDDLE brain. responsible for vision and hearing |
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Definition
| HIND brain. movement and balance. SPINAL CORD IS CONSIDERED PART OF THE HINDBRAIN |
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Definition
- Prosencephalon becomes Telencephalon AND Diencephalon
- Mesencephalon
- Rhombencephalon becomes Metencephalon and Mylencephalon
REMEMBER: MYlen TELE DIEd so send MEte a txt MES
Mylencephalon, telencephalon, diencephalon, metencephalon and mesencephalon |
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Definition
| END BRAIN - cerebral hemispheres and related structures |
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Definition
| Between brain - hypothalamus |
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| across brain - cerebellum |
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Definition
| spinal brain - LOWER REGION OF BRAIN STEM |
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Term
| Fully Developed Human Brain |
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Definition
| The five chambered brain eventually forms the fully developed Human brain |
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Term
| Fully Developed Brain as a three part subdivision |
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Definition
Forebrain formed by the telencephalon
Brainstem - formed by the Diencephalon, mesencephalon, metencephalon, mylencephalon
Spinal cord from the spinal cord |
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