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

the nervous system

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