the nervous system

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öğrenmeye başla

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Two major anatomical divisions are: öğrenmeye başla		the central nervous system (CNS) and peripheral nervous system (PNS).
CNS consists of öğrenmeye başla		the brain and the spinal cord.
PNS consists of öğrenmeye başla		nerves that carry sensory messages to the CNS and motor commands from the CNS to the muscles and glands.
Two types of cells are: öğrenmeye başla		neurons and neuroglia.
Neurons funtions are to: öğrenmeye başla		transmit nerve impulses between parts of the nervous system.
Neuroglia functions are to: öğrenmeye başla		support and nourish neurons, maintain homeostasis, form myelin and may aid in signal transmission.
Neurons consist of: öğrenmeye başla		a cell body, dendrites and an axon.
The cell body contains öğrenmeye başla		the nucleus and other organelle.
Dendrites are öğrenmeye başla		extensions leading toward the cell body that receive signals from other neurons.
An axon function is to: öğrenmeye başla		conducts nerve impulses away from the cell body toward other neurons or effectors.
Different sorts of neurons are: öğrenmeye başla		sensory neurons, interneurons and motor neurons.
A sensory neuron function is to: öğrenmeye başla		take messages to the CNS.
A sensory neuron may be equipped with: öğrenmeye başla		endings called sensory receptors that detect changes in the environment.
An interneuron lies öğrenmeye başla		within the CNS.
An interneuron function is to: öğrenmeye başla		receive input from sensory neurons and from other interneurons. Sum up all the messages received from sensory neurons before communicate with motor neurons.
A motor neuron function is to: öğrenmeye başla		take messages away from the CNS to an effector.

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biologia przedmioty ścisłe układ nerwowy układ nervous system

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