Exam (elaborations)
EXSS 175 Exam 2 The Nervous System Questions and Answers (100% Pass)
- Course
- Institution
EXSS 175 Exam 2 The Nervous System Questions and Answers (100% Pass)
[Show more]
Content preview
©PREP4EXAMS @2024 [REAL EXAM DUMPS] Wednesday, July 17, 2024 1:27 AMEXSS 175 Exam 2 The Nervous System
Questions and Answers (100% Pass)
functions of the nervous system - ✔️✔️-sensory (senses change in environment)
-integrative (analyzes data, stores data, decides which stimuli are important)
-motor (responds to stimuli)
two principle divisions of the NS - ✔️✔️-central nervous system (CNS)
-peripheral nervous system (PNS)
central nervous system (CNS) - ✔️✔️-brain: lies above foramen magnum
-spinal cord: lies below foramen magnum
peripheral nervous system (PNS) - ✔️✔️-cranial nerves
-spinal nerves
-peripheral nerves
functional classification of neurons - ✔️✔️-afferent (sensory) neuron
-efferent (motor) neurons
-interneurons (association neurons)
afferent neurons - ✔️✔️sensory
efferent neurons - ✔️✔️motor
interneurons - ✔️✔️association neurons
3 components of the neuron - ✔️✔️-dendrites
-cell body (soma)
-axon
dendrite - ✔️✔️-input to neuron
-branched processes from cell body
-function:
--nerve impulses "toward" cell body
1
, ©PREP4EXAMS @2024 [REAL EXAM DUMPS] Wednesday, July 17, 2024 1:27 AM
--relay info from external environment
-several per neuron
axon - ✔️✔️-long, thin, cylinder
-axon-hillock: where it joins cell body
-function: transmit nerve impulses
-communicates with other cells via axon terminals
axon terminals - ✔️✔️-synaptic end bulb
--synaptic vesicle
--neurotransmitter
synapses - ✔️✔️junction b/w two neurons or b/w neuron and effector (muscle, organ, or gland)
myelination - ✔️✔️-myelin sheath
--insulates axon
--increases nerve conduction velocity
--schwann cells
-nodes of ranvier
degrees of myelination - ✔️✔️-types
--A-alpha
--A-beta
--A-delta
--C
A-alpha - ✔️✔️(degrees of myelination)
-large, myelinated, fast transmission (motor)
A-beta - ✔️✔️(degrees of myelination)
-large, myelinated, fast, respond to touch
A-delta - ✔️✔️(degrees of myelination)
-small, slow, lightly myelinated, respond to pain and temp.
C - ✔️✔️(degrees of myelination)
-very small, very slow, unmyelinated, respond to pain
multiple sclerosis (MS) - ✔️✔️-myelin sheath deteriorates
--sensory or motor neurons
2
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 OliviaWest. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
76667 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now