The human nervous system
The role of the nervous system
CNS
central nervous system
- consists of brain and spinal cord
Spinal cord
Efferent neurons
motor
- transmit information via impulses away from the brain
Afferent neurons
sensory
- transmit information via impulses towards the brain
PNS
peripheral nervous system
Sympathetic Nervous System
Adrenaline/noradrenaline
Parasympathetic Nervous System
Neurons
Cell body
dendrites
axon
myelin sheath
nucleus
Somatic nervous system
Autonomic nervous system
The parts of the brain
the forebrain
the cerebrum (cerebral cortex)
- divided into left and right
left hemisphere of cerebrum
right hemisphere of cerebrum
the cerebellum