Splh 620 exam 1 stuvia - Study guides, Class notes & Summaries

3 types of neuroglia - ANSWER-astrocytes, oligodendrocytes, microglia Astrocytes CNS - ANSWER-Clean up local debris including dead neurons Provide nutrients Regulate chemical composition of extracellular fluid Oligodendrocytes CNS - ANSWER-Provide support for axons Produce myelin sheath to cover axons (on neuron) in CNS, covering multiple at a time Schwann Cells PNS - ANSWER-Support cells Produce myelin to cover axons (on neuron) in PNS, only covers one axon at a time Each cell pro...

Schwann Cells PNS - ANSWER-Support cells Produce myelin to cover axons (on neuron) in PNS, only covers one axon at a time Each cell provides myelin for one neuron What is exocytosis? - ANSWER-presynaptic process - when the synaptic vesicles are released and fuse to membrane Depolarization - ANSWER-Becomes more positive leading to action potential -70 to -55 Hyperpolarization - ANSWER-membrane potential becomes more negative, less likely for action potential -120 Spatial summation -...

What does the nervous system do? - ANSWER-1. controls and coordinates all body functions 2. senses and interprets information from outside the body 3. transmits info 4. integrate info 5. generate comands Parts of a neuron - ANSWER--cell body -dendrite -axon Cell body (soma) - ANSWER-integrates signal Dendrites - ANSWER-a neuron's bushy, branching extensions that receive messages and conduct impulses toward the cell body Axons - ANSWER-a part of a neuron that carries impulses a...

what is the nervous system? - ANSWER-it is a system containing a network of neurons and it controls body functions what is the CNS? - ANSWER-central nervous system - made up of brain and spinal cord, what is the PNS? - ANSWER-peripheral nervous system - sagittal plane - ANSWER-divides brain into right and left coronal plane (frontal) - ANSWER-divides brain into anterior and posterior axial (transverse) - ANSWER-divides brain into upper and lower what are the 2 basic cell types ...