Categorias: Todos - neurons

por Andrew Sippel 4 anos atrás

240

Neuron and brain structure

The brain's structure encompasses various specialized areas and neurons, each contributing to its complex functionality. Neurons, the primary cells, consist of a cell body housing most organelles, a nucleus, dendrites that receive incoming messages, and an axon that transmits information away from the cell body.

Neuron and brain structure

Andrew Sippel H. Biology 5-14-20

Neuron and brain structure

Brain

Cerebellum coordinates muscle movement
Hypothalamus maintains homeostasis
Thalamus directs most sensory signals
The brain stem connect the brain to the spinal cord
Cerebrum
The cerebral cortex contains 10-20% of the brain's neurons
Largest portion of the brain

Neurons

Cell body is where most organelles are located
Axon
Covered by myelin sheath

Gaps in this are called nodes of Ranvier

Axon terminal

End of axon

Carries info away from cell body
Dendrites
Receive messages from other neurons
Nucleus