Nervous System Flashcards
Nervous system splits into
Central nervous system
Peripheral nervous system
Central nervous system splits into
Brain
Spinal cord
Peripheral nervous system splits into
Sensory system
Motor system
Motor system splits into
Somatic nervous system
Autonomic nervous system
Autonomic nervous system splits into
Sympathetic system
Parasympathetic system
Sympathetic system structure
Many nerves out of CNS to separate effectors
Ganglia just outside CNS
Short pre-ganglionic neurone, long post-ganglionic neurone
Used noradrenaline
Parasympathetic system
Few nerves out of CNS which decide to different effectors
Ganglia in effectors tissue
Long pre-ganglionic Neurone, short post-ganglionic neurone
Uses acetylcholine
Function of sympathetic system
Increase activity
Increase HR, Ventilation rate
Dilate pupils
Reduce digestive activity
Function of Parasympathetic system
Decrease activity
Decrease HR, ventilation rate
Constrict pupils
Increase digestive active
