Nerve Cell Flashcards
What does CNS stand for?
What does it deal with?
Central Nervous System
Brain and spinal cord only
What is the peripheral nervous system?
Everything other than the brain and spinal cord
What are neurons?
Nerve Cells
What are the Nodes of Ranvier
Space between the schwan cells
Enhances speed of conduction of nerve cell impulses
(Faster with spaces, slower when insulated)
What do dendrites do?
Receive stimuli or impulse from neurons, have sensory receptors
(Receive stimuli such as heat, cold, touch, and pressure)
What does an axon do?
Conducts nerve impulses down the cell
What do afferent nerves do?
Conducts nerve impulses toward CNS
What do efferent nerves do?
Conducts nerve impulses away from the CNS
Go to motor neurons
What is autonomic?
Self regulated
Receive sensory information and responds to it
What is the somatic nervous system?
Conscious and voluntary control of skeletal muscles
How is a neuron like a battery?
Uses charge then gets recharged
Voltage, rechargeable battery
What is voltage?
Potential electrical energy created by the separation of opposite charges
What is membrane potential?
Tries to keep balance with charged particles on the inside and outside of the cell
What if one side of the cell has more charge than the other?
Have to use ATP to balance out charges
Name where sodium and potassium are located
Sodium is ore concentrated on the outside of the cell while potassium is more concentrated on the inside of the cell
(Salted banana)
