Nervious System Flashcards
Sensitive neurons?
Carry neurons impulses from organs to brain and spinal cord
Motor neurons?
Carry impulses from brain and spinal cord to muscles and glands
Resting potential have three characterisics
Is innactive
Is always negative
Have NA outside and K inside
Action potential have three characteristics, which?
Is activated
Is always positive
Have NA inside and K outside
Brain and spinal cord are protected in three ways…
With the bones
With meninges (fluid that absorbs hits)
With a layer of blood in the brain
In periphelal nervous system, what does the sympathetic division?
Prepare your body for stress
What does the parasympathetic division?
Relax you (opposite of sympathetic)
Central nervous system?
Brain and spinal cord
Perypheral nervous system?
Nerves in the rest of your body
Where are the Autonomic nerves?
Smooth muscle, cardiac muscle and glands
Where are the Somatic nerves?
Somatic nerves, skin tendons, skeletal muscle
White matter:
Outermost portion, bundles of myelin sheated axons
Gray matter?
Cell bodies, dendrites and neurological cells.
In hind brain, what medulla oblongata does?
Autonomic functions, like breath, heart rate, blood pressure
In hind brain, what pond does?
Transition between sleep and wakefuness
