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Nervous system (Anatomical divisions (Central nervous system (Brain,…
Nervous system
Anatomical divisions
Central nervous system
Brain
Spinal cord
Peripheral nervous system
Everything else
Functional divisions
Autonomic system
Primarily involuntary
Two neuron chains from CNS to effector
Parasypathetic
Decrease blood pressure
Rest and digest
Sympathetic
Increase blood pressure
Fight or flight
One ganglion chain on each side of vertebral column
Two adrenal medullae
Divergence
Ganglionic fibres
Post - long
Release noradrenaline
Pre - short
Release acetylcholine
Enteric
Second brain
Smooth muscle
Receptors
Choligernic
Acetylcholine
Adrenergic
Noradreneline
Somatic system
Primarily voluntary
Single neuron chain from CNS to effector
Musculoskeletal
Neurons
Structural class
Bipolar
Multipolar
Motor neurons
Pseudounipolar
Sensory neurons
Anaxonic
Myelin sheath
Increase speed of action potential
Schwann cells
PNS
Oligodendrocytes
CNS
Ascending spinal pathways
Spinothalamic
Pain
Detect temperature
Lemniscus
Fine touch
Vibration
Proprioception
Post-synaptic mechanisms
Ionotropic/Ligand
Direct
Changes membrane potential
Metabotropic/G-protein coupled
Indirect
Activates secondary messenger
