Nervous system Flashcards
(19 cards)
the fight/flight response is under control of the…
autonomic, sympathetic system
reflex reactions are under the…
somatic division
the rest and digest system is under the..
parasympathetic system
grey matter is made up of… and found in the…
- unmyelinated neurons
outer regions of the brain
what protects the brain?
- meninges
- blood brain barrier
- cerebral spinal fluid
the right side of the brain has to do with…
holistic and intuitive thinking, visual skills, and artistic abilities
the left side of the brain is responsible for…
logical ways of thinking, linguistic and mathematical skills
what systems are under involuntary control?
- rest and digest response
- reflex response
- fight/flight response
the axon…
conducts an electrical impulse away from the cell body and can range in length from 1mm-1m
where is the multipolar neutron found?
in the brain and spinal cord
what is the pathway of the reflex arc?
- receptor
- sensory nerve
- spinal cord
- motor nerve
- effector
what is the resting membrane potential of the cell?
-70mV
what is the threshold potential of the cell?
-50mV
what is the membrane potential of the cell when it is hyper polarized?
-90mV
at what membrane potential does an action potential occur?
-50mV
what is responsible for maintaining the resting potential of a nerve cell?
potassium ion channels
during the polarization phase of an action potential___ ions move ____ the cell
sodium
into
during the depolarization phase of an action potential ____ ions move ____ the cell
potassium
out
synapse
is the junction between 2 neurones
