Neuron and brain structure
Neurons
Nucleus
Dendrites
Receive messages from other neurons
Axon
Carries info away from cell body
Axon terminal
End of axon
Covered by myelin sheath
Gaps in this are called
nodes of Ranvier
Cell body is where most
organelles are located
Brain
Cerebrum
Largest portion of the brain
The cerebral cortex contains 10-20% of the brain's neurons
The brain stem
connect the brain to the spinal cord
Thalamus directs
most sensory signals
Hypothalamus
maintains homeostasis
Cerebellum coordinates muscle movement