NCSU Bio 240 Klesath Module 1.2
Central Nervous System (CNS) - ANS-brain and spinal cord
Brain - ANS-- Site of thoughts and intelligence
- Processes information received and sends messages back to the body
Spinal Cord - ANS-- Carries information between the brain and the body
- Musculoskeletal reflex center (i.e. knee jerk)
Peripheral Nervous System (PNS) - ANS-Nerves:
- Bundled axons carry signals to and from CNS
- Extend from the brain or spinal cord
Ganglia:
- Cluster of neuron cell bodies outside of the CNS
Nerve - ANS-An organized collective bundle of axons that send signals thought the PNS
Ganglion - ANS-A localized cluster of neuron cell bodies, and associated glial cells,
found along the length of the nerves in the PNS
Epineurium - ANS-Connective Tissue surrounding the outer nerve surface
Perineurium - ANS-Connective Tissue the surrounds and separates bundles of axons
organized into fascicles
Endoneurium - ANS-Connective Tissue that surrounds and Socrates individual axons
within fascicles
Somatic Sensory - ANS-sensory input that is consciously perceived from receptors
Visceral Sensory - ANS-sensory input that is not consciously perceived from receptors
of blood vessels and internal organs
Somatic Motor - ANS-motor output that is consciously or voluntarily controlled; effector
is skeletal muscle
Autonomic Motor - ANS-motor output that is not consciously or is involuntarily
controlled; effectors are cardiac muscle, smooth muscle, and glands
, Multipolar Neuron - ANS-A neuron with a single axon and multiple dendrites; the most
common type of neuron in the nervous system.
Bipolar Neuron - ANS-a neuron with one axon and one dendrite attached to its soma,
found in limited locations
Unipolar Neuron - ANS-a neuron with one process extending from its cell body and
forms a T intersection
Anaxonic Neuron - ANS-many dendrites but no axon, help in visual processes
Sensory Neurons - ANS-neurons that receive information from the external world and
convey this information to the brain via the spinal cord
Interneuron - ANS-Receives signs form sensory neurons and sends signals to motor
neurons
Motor Neuron - ANS-a neuron that sends an impulse to a muscle or gland, causing the
muscle or gland to react
Presynaptic Neuron - ANS-neuron that sends the signal
Postsynaptic Neuron - ANS-neuron that receives the signal and binds to receptors and
causes either depolarization or hyper polarization
Anterograde Transport - ANS-Moves newly synthesized material toward synaptic knobs
Retrograde Transport - ANS-Moves used materials form axon for breakdown and
recycling in cell body.
Neuron - ANS-Excitable Cells
Glial Cells - ANS-non-excitable cells that support and protect the neurons
Astrocyte Function (CNS) - ANS--forms barrier around brain capillaries that control what
substances enter brains nervous tissue from blood
-regulate interstitial fluid composition (chemical environment around neurons)
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 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 Hkane. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £6.40. You're not tied to anything after your purchase.
