NERVOUS SYSTEM

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by BeattrizQuintana
Last updated 5 years ago

Discipline:
Science
Subject:
Human Anatomy

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NERVOUS SYSTEM

PROCESS OF INTERACTION

FUNCTIONSGetting information ------>Interpreting information ->Carrying out responses ->

ORGANSSensory organsNervous systemNervous system and hormonal system

NEURONS

carry information

transmite nerve impulses

wich travel along nerve pathways

DENDRITES

VESICLES: CONTAIN NEURO-TRANSMITTERS

AXON

SYNAPSE

THE NERVOUS SYSTEM - N.S.

SENSORY NEURONS: TRANSMIT NERVE IMPULSES FROM RECEPTOR TO THE N.S.MOTOR NEURONS: TRANSMIT NERVE IMPULSES FROM THE N.S. TO EFFECTOR ORGANSINTERNEURONS: CONNECT SENSORY NEURONS TO MOTOR NEURONS

TYPES OF NEURONS

THE CENTRAL NERVOUS SYSTEM

grey matter (neurons,cerebral cortex, outside cerebellum)white matter->nerves->axons (myelin)->inside cerebrum and cerebellum

SPINAL CORD: functions: - produces reflexes- carries: sensory nerve impulses to the brain, and from the brain to the effector organsBRAIN:* brain stem: functions:- regulates: heartbeat, blood pressure, breathing and movement.- helps regulate: sleep, body temperature, thirst, hunger...* cerebellum:functions:- responsible for processing information from the ear that is related to the balance* cerebrum:cerebral cortex (grey matter) functions:- responsible for all thought, voluntary movement and learnt behaviour- 2 halves (left and right hemispheres)with 4 lobes in each one: frontal, parietal, occipital and temporal onesfunctions: processing information, works out responses to stimuli and sends out commands to effectors, memory, reasoning, intelligence, conscience and will

CNS

PERIPHERAL NERVOUS SYSTEM - PNScomponents:+ sensory receptors+ sensory nerves+ motor nerves2 sections:+ the somatic (or voluntary) NS+ the autonomic ( or involuntary) NS


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