the nervous system

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