Biology Questions and Answers
Nervous System
- What are the physiological
systems known as integrative
systems? Why is this
designation justified?
The integrative systemssystem and the endocrine are the nervoussystem. The
designation is justifiesystems control and regulate bid since bothological (^)
functions and act at distance receiving
information sending effector commanfrom organs and tissuesds (nervous and
impulses or hormones) to organs and
tissues thus integrating the body.
- Which are the structures
that are part of the nervous
system?
The structures that form the nervous
system can bnervous systeme divided into th (CNS) and thee central
peripheral nervous system (PNS).
The organs of the CNS are the brain
(cerebrum, band spinal cord. rainstem aThe PNS is made ofnd cerebellum)
nerves and neural ganglia. Besides
these organs tmater, arachnoihe meninges (dura-d and pia-mater) are
part of the nervous system too since
they cover and the spinal cord.and protect the encephalon
- Which are the main cells of
the nervous system?
The main cells of the nervous system
are the neurons. Besidthe nervous system is also coes the neuronsnstituted (^)
of glial cells.
- What are the functional
differences between neurons
and glial cells?
Glial cells and neurons are the cells thatform the nervous system. Neurons are
cells that havand transmitting the the function oe neural impulsesf receivin g
and glial cells (astrocytes,
microgliacytes,oligodendrocytes) are ependymal cells anthe cells thatd
support, feed and insulate the neurons. The Schwann (electrically)cells that
produce the myelin sheath of the
peripheral nervous system can also bconsidered glial cells. e - What are the three main
parts into which a neuron can
be divided? What are their
respective functions?
The three mains pneuron can be didacticallyarts into which divided are:a (^)
dendrites, cell body and axon.
Dendrites are membrane that receive projections othe neuralf the plasma
impulse fbody is where the nucleus and the mainrom other neurons. The cell (^)
cellular organelles are located. Axon is
the long membrane projection that
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