Esquema con los principales elementos en una sinapsis modelo. La sinapsis permite a las células nerviosas comunicarse con otras a través de los axones y dendritas, transformando una señal eléctrica en otra química.
The regulating systems of the human body
Juan Francisco García Biology 10th Grade
Nada hay en la mente que no haya estado antes en los sentidos.(Aristóteles)
NERVOUS SYSTEM Group of organs and tissues that receive, analize and send signals and orders to the rest of the body. The basic unit of the nervous system is the neuron. It´s divided in 2 systems: Central Nervous System (CNS) Peripheral Nervous System (PNS)
NERVOUS CELLS NEURONS: Star-shaped cells, with nucleous, but no cell organelles. PARTS: Cell body Nucleous Axon Axial Dendrites Terminal Dendrites Axon Ending Myelin Sheath
NERVOUS CELLS SCHWANN CELLS: cover the axon and produce myelin. MYELIN: substance with conductive properties that facilitate the transmision of the electrical nervous impulse from one side of the neuron to the other one.
NERVOUS CELLS GLIAL CELLS: non-neuronal cells that maintainhomeostasis, form myelin, and provide support and protection forneurons in the brain, and for neurons in other parts of the nervous system such as in the autonomic nervous. To ToTo surround supply To insulate destroyneurons and nutrients and one neuron pathogens andhold them in oxygen to from another, remove dead place. neurons, neurons.
SYNAPSE It is an specialized intercellular union between neurons or between one neuron and a efector cell.
TYPES OF SYNAPSE ELECTRICAL: Depolarization CHEMICAL Neurotransmitters