Exam (elaborations)
Nerve Cells and Nerve Impulses (Glial Cells) QUESTIONS AND ANSWERS
- Course
- Institution
Nerve Cells and Nerve Impulses (Glial Cells) QUESTIONS AND ANSWERS
[Show more]
Content preview
Nerve Cells and Nerve Impulses (GlialCells) QUESTIONS AND ANSWERS
Astrocyte - ANS Glial cell in the central nervous system that provides nutrients,
extracellular buffering, and structural support for neurons; also makes up the
blood-brain barrier.
Axon - ANS Tube like structure that propagates a signal from a neuron's cell body to
axon terminals
Axon hillock - ANS Electrically sensitive structure on the cell body of a neuron that
integrates signals from multiple neuronal connections
Axon terminal - ANS Structure on the end of an axon that can form a synapse with
another neuron
Dendrite - ANS Structure that extends away from the cell body to receive messages
from other neurons
Ependymal - ANS Cell that lines fluid-filled ventricles of the brain and the central canal
of the spinal cord; involved in production of cerebrospinal fluid.
Glia - ANS Cells that provide support functions for neurons
Microglia - ANS Glial that scavenge and degrade dead cells and protect the brain from
invading microorganisms
Myelin - ANS Fatty substance produced by glial that insulates axons
Neuron - ANS Specialized cell that can receive and transmit electrical and chemical
signals
Nodes of Ranvier - ANS Gaps in the myelin sheath where the signal is recharged
Oligodendrocyte - ANS Glial cell that myelinates central nervous systems neuron
axons
, Radial glia - ANS Glia that serve as scaffolds for developing neurons as they migrate
to their final destinations
Satellite glia - ANS Glia cell that provides nutrients and structural support for neurons
in peripheral nervous system
Schwann cell - ANS Glial cell that creates myelin sheath around a peripheral nervous
system neuron axon
synapse - ANS Junction between two neurons where neuronal signals are
communicated.
What are some of the different levels of analysis in neuroscience? Why might it be
valuable to be able to move easily from comprehending one level of analysis to
another? - ANSBrain->Neurons->Neuron Organelles->Molecules
Smaller levels add up to larger levels, smaller levels allow focus on specific details
In terms of total number of neurons, what are some of the ranges found in different
animals, including humans, and how might this reflect what an animal can do? - ANS0
in sponges, ~56 in jellyfish, ~25k in flies, etc.
~86 billion in humans.
More neurons allows for more complex behavior
What are the major parts of the neuron? What are similarities and differences between
neurons and a typical cell? What are some of the things neurons do? - ANSDendrites,
Soma (body), nucleus, axon hillock, axon, axon terminal. They've got nuclei, like
normal.
To what extent is the nervous system involved in different parts of human physiology?
For the immune, endocrine, and digestive system, can you think of examples of how the
nervous system is involved in these processes? - ANSNervous system dictates almost
every part of the physiological system
How active is the inside of a neuron in terms of moving things around? What are some
of the tools the neuron uses to move things and what needs to be moved around? What
does the neuron need to support high internal activity? - ANSIon channels in the
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller excellentrevision964. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
82013 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now