Divisions of the Nervous System
The portion of the nervous system that has somatic and autonomic divisions.
What is the peripheral nervous system?
The structure that connects the two hemispheres of the brain is the _______ ________.
What is the corpus callosum?
At resting potential, the ion __ is inside the cell and the ion __ is outside of the cell.
What is K and Na?
Which axons will conduct nerve impulses more quickly: myelinated or unmyelinated?
What is myelinated?
The division of the PNS that is under conscious control of skeletal muscle.
What is the somatic nervous system?
The lobe of the brain responsible for understanding speech.
What is the parietal lobe?
When one neuron receives an impulse from two or more presynaptic axons.
What is convergence?
Neuroglia that support neurons and function to clean up excessive neurotransmitters.
What are astrocytes?
The division of the nervous system that is not consciously controlled and has sympathetic and parasympathetic divisions.
What is the autonomic nervous system?
The emotional center in the brain.
What is the limbic system?
The mechanism that restores resting potential and returns ions to their starting rergions.
What is the sodium/potassium pump?
Structure formed by oligodendrocytes that speeds up the rate of impulse transmission.
What is the myelin sheath?
The division of the nervous system responsible for "rest and digest."
What is the parasympathetic nervous system?
Region of the brain that contains the midbrain, pons, and medulla oblongata.
What is the brain stem?
Repolarization is characterized by the movement of __ ions ___ the cell.
What is K ions out of cell?
Structures on a neuron that receive impulses and send message to the cell body.
What are dendrites?
What is the sympathetic nervous system?
Structure in the brain that relies on sleep to convert short term memory into long term memory.
What is the hippocampus?
Depolarization is characterized by the movement of __ ions ___ the cell.
What is Na ions into the cell?
Many sub-threshold impulses that combine to trigger an action potential.
What is summation?