Nerves Flashcards

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1
Q

Nerves

A

The basic unit of the nervous system is a nerve cell or neuron. Bundles of neurons are called nerves in the PNS and tracts in the CNS

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2
Q

Structure of a nerve

A
  • Neurons are bound together into bundles by connective tissue called perineurium
  • inside the bundles the neurons are surrounded by delicate connective tissue called endoneurium
  • the entire nerve is surrounded by a sheath of connective tissue, the epineurium
  • an artery and a vein occur between the bundles, to nourish the fibres and remove waste
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3
Q

Functions of nerves

A

Nerves carry impulses from receptors to the CNS and from the CNS to effectors to bring out appropriate responses

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