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The types, parts, and functions of all components in CNS
Typology: Schemes and Mind Maps
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Concept Map: The Organization of the Nervous System KEY
The Nervous System
Central Nervous System (CNS) receives and processes information initiates action
Peripheral Nervous system (PNS) transmits signals between the CNS and the rest of the body
Brain receives and processes sensory information initiates responses stores memories generates thoughts and emotions
Spinal Cord conducts signals to and from the brain controls reflex activities
Motor Neurons carry signals from the CNS that control the activities of muscles and glands short dendrite long axon cell body positioned inside the CNS
Sensory Neurons carry signals to the CNS from sensory organs long dendrite short axon cell body is outside CNS in ganglia
Somatic Nervous System controls voluntary movements by activating skeletal muscles
Autonomic Nervous System controls involuntary responses by influencing organs, glands, and smooth muscle
Sympathetic Nervous System prepares the body for stressful or energetic activity “fight or flight” response neurotransmitter - Noradrenalin
Parasympathetic Nervous System dominates during times of rest directs maintenance activities neurotransmitter - Acetylcholine
Interneuron (association neuron) located entirely within CNS short dendrites axons long or short conveys messages between system parts in CNS
Medulla Oblongata: breathing, heartbeat, reflexes Cerebrum consciousness Thalamus gatekeepers to the cerebrum, Cerebellum maintaining/restoring balance Hypothalamus maintains the homeostasis links the nervous system with the endocrine system Corpus callosum connects the two cerebral hemispheres to share info