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
In mid brain, what the reticula formation does?
Relay information from senses, lets concentrate despite distractions
In fore brain, what does the thalamus does?
Relay station
In fore brain, what does the linbic system does?
Emotions, memory, self-gratifying behavior
Which components have the hind brain?
Medulla oblongata, ponds and cerebellum
What is in the mid brain?
Reticular formation
What are in the fore brain?
Thalamus, limboc system and cortex
What role have the wernickes area?
Comprehension of spoken and written languajes even braille
What role have the brocas area?
Translates thoughta into speech, control tongue, throat, lips, speak complex centences.
What role have the left hemisphere?
Matematical
