Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Unit 3 Exam
Nerno Anatomny Terms
| Term | Definition |
|---|---|
| Central Nervous System (CNS) | Responsible for Integration, processing, and coordination and higher cognitive functions |
| Peripheral Nervous System (PNS) | Delivers sensory information to CNS and carries motor commands to body |
| Somatic Sensory | Sensation from skin, muscles, bones, and joints |
| Visceral Sensory | Sensation from organs; mainly stretch, temperature, and pain |
| Somatic motor | Contraction of skeletal muscles; voluntary movement |
| Visceral motor (ANS) | regulates smooth and cardiac muscle, glands; Involuntary; Sympathetic and parasympathetic divisions |
| Neuro Glia | support cells for neurons |
| Neurons | extremely long-lived, amitotic, and high metabolic rate |
| Sensory (afferent) neurons | conduct signals from receptors to CNS |
| CNS interneurons | integrate incoming signals and mediate responses |
| Motor (efferent) neurons | conduct signals from CNS to effectors |
| Ependymal cells | form and help circulate CSF |
| Satellite cells | provide structural support and regulate extracellular environment |
| Schwann cells | form myelin sheath and help repair damaged axons |
| Fascicle | group of axons |
| Nerve | Group of fascicles, blood vessels |
| Gray matter | soma, dendrites, unmyelinated axons |
| White matter | myelinated axons |
| microglia | support cells that fight infections in the central nervous system |
| chemical synapse | release of neurotransmitter from the presynaptic membrane, separated by a synaptic cleft, and postsynaptic membrane has receptors |
| Saltatory conduction | occurs only in myelinated nerve fibers with action potentials jumping node to node |
| resting membrane potential | the voltage difference across the membranes of excitable cells at rest |
| Soma | neuron cell body |
| Dendrites | recieves signals |
| Axon | transmits signals |
| Axon terminals | communicates wth target cells |
| Multipolar neurons | motor and interneurons |
| Bipolar Neurons | special sensory neurons |
| Pseudoneurons | sensory neurons |
| Astrocytes | provide structural support, regulate extracellular environment, and replace damaged tissue |
| Oligodendrocytes | wrap around axons to form myelin sheath |
| Microglia | phagocytotic defense cells |
| Ependymal cells | form and help circulate CSF |
| Membrane potential | difference between intra and extra-cellular charge |
| Summation | combined effect of multiple local potentials to trigger a full action potential |
| Temporal Summation | frequent stimulation of the same location |
| Spatial Summation | simultaneous stimulation of many locations |
| Multiple Sclerosis | autoimmune disease that causes the destruction of oligodendrocytes and the demylination of CNS neurons; causes muscle weakness, numbness, visual impairments, and speech deficits |
Created by:
MadisonFoleyReis
Popular Anatomy sets