Sensation
Integration
Reaction
Nervous system acts rapid but effect doesen't last long
Endocrine system acts slower bus last longer on it's effects.
Central nervous system
Brain and spinal cord
Peripheral nervous system
31 Spinal nerves
12 cranial nerves
Sensory Division
Afferent division
Motor division
Efferent division
Somatic nervous system, voluntary
Autonomic nervous system, involuntary functions
Sympathetic nervous system; fight or flight
Increase heart rate, blood pressure, blood flow, no digestive functions
Parasympathetic nervous system; rest and digest
Calms body, low heartbeat, breathe rate, blood pressure
Heartbeat, blood pressure, respiration, digestion and more.
Examples of sympathetic and parasympathetic
One do the contrary of the other
Sympathetic: Pupils dilatate. Parasympathetic: Pupils contract
Sympathetic: Decrease salivation Parasympathetic: Increase salivation