A & P Nervous System
nervous function that is the fastest message system in the body
nervous function that is the major regulator and helps keep the heart at a normal rate
integrator of information
nervous function that decides what to do
nervous function that helps you know what is going on in the environment
nervous function that decides how to react with the environment and give the body environmental cues
nervous function that controls reflexes
supporting cells that help neurons (astrocytes, satellite cells, microgilia, oligodendrocytes, schwann cells, ependymal cells)
peripheral nervous system
What portion of the nervous system includes brain and spinal cord?
What portion of the nervous system has more supporting cells?
What portion of the nervous system includes somatic, Nerves, and ANS?
What portion of the nervous system has schwann and satellite cells?
What portion of the nervous system has astrocytes, oligodendrocytes, ependymal, microglia cells?
What type of cell makes myelin, makes the speed of impulse faster, is a great insulator, and is found along the axon?
What type of cell looks like a moon, wraps around the cell body, and monitors health?
What type of cell is the most common cell type, looks like stars, has big feet, and helps maintain blood-brain barrier?
What type of cell maintains the blood-brain barrier, looks like epithelial cells, forms lining, and is specialized CSF?
What type of cell makes myelin, acts as an insulator, increases the speed process of the impulse, and can mylinate multiple axons?
What type of cell creates an immune system for the brain?
afferent (sensory) neurons
What directional cell type sends messages to the CNS?
efferent (motor) neurons
What directional cell type sends messages from the CNS to the PNS?
Internerons (assoulation) neurons
What directional cell type connects afferent to efferent and is found in the CNS?
What type of structural neuron has lots of dendrites?
What type of structural neuron is rare and is in the eye?
What type of structural neuron are sensory neurons?
What type of structural neuron has an axion (one extension)?
The plasma membrane is like a ___________.
physiology of impulse
When cells can generate a potential or energy it is called __________.
The resting membrane potential is mostly determined by ______.
resting membrane potential
How excitable a cell is is known as __________.
potential energy in the physical properties of ions comes from _____.
potential energy is measured in _______.
When a sodium gate opens _______ is being generated.
The fatter the wire the faster the __________flow.
_________ is measured in Ohom's.
current in the physical properties of ions comes from ______.
Current is measured in ______.
the flow of electrical particles that are ions create _______.
What Na+ gate needs to be poked, prodded, or squeezed to function?
What Na+ gate manually opens?
chemical gates (or ligand gates)
What Na+ gate needs to bind with a chemical to open?
What Na+ gate will only open if it feels a ionic charge come on?
What Na+ gate will you only find in the trigger zone (axon hillock)?
Occurs in the axon hillock and is a special response grading how many gates to open.
losing polarity, when the gates open
when the gates go back to normal, the resetting back up again
a short event in which electrical membrane potential of a cell rapidly rises and falls
Graded potentials are ________ because they go in two directions.
Graded potentials are _________ because they fade away and die down.
Graded potentials have relatively ________ messages.
chemical or mechanical
Graded potentials can have _________ or __________ gates.
dendrites and soma
Graded potentials occur in the ________ and __________.
axon terminals (transmitters)