Exam (elaborations)
Hondros Bio 253 exam 2 Questions and Complete Solutions Graded A+.
- Course
- Institution
Hondros Bio 253 exam 2 Questions and Complete Solutions Graded A+.
[Show more]
Content preview
BIO 253 - Exam 1 Questions with Complete Solutions Graded A+Denning Muriithi [Date] [Course title] brils (budles of
ipola
r)
e
sparatu
s
Hondros Bio 253 exam 2
.Neurons (Chapter 18) Correct Ans: Communicating Cells
2.Cell body Correct Ans: -contains ribosomes, rough endoplasmic er, Golgi
ap
-Neurotransmitters are packaged into vesticles
-provide proteins for nerve fibers
3.Axon Correct Ans: - each neuron has 1 axon
-carries impulses to target cells
4.Axon Hillock Correct Ans: Integrates incoming signals
5.Cytoskeleton Correct Ans: -microtubules of microfilaments, as well as neurofi neufilaments)
-allows transport of small organelles
6.Classifications of neurons Correct Ans: -Multipolar (motor are typically mult Bipolar(rare, think of retina)
Unipolar(pseudounipolar)(sensory are usually unipolar
7.Neurons have a limited capacity to repair themselves Correct Ans: -If the damage is not extensive, the cell body and the neurilemma are intact, and scarring has not occurred than nerve fibers can be repaired
8.Stages of neuron repair Correct Ans: -after injury distal portion of the axon and myelin sheath degenerate
-Macrophages remove debris
-remaining neurilemma and endoneurium form a tunnel from the point
of injury to the effector
-new Shawanna cells can grow in the tunnel to maintain a path of regrowth for the axon
9.Glia Correct Ans: The supporting cells of the central nervous system / 5 typ li
a
Ranvie
r
dcesse
s
Hondros Bio 253 exam 2
.Oligodendrocytes Correct Ans: -smaller than astrocytes and have fewer
pro
-hold the nerve fibers together
-producer the myelin sheath
14.Neuroglia Correct Ans: Schwann Cells Correct Ans: -Found only in Peripheral neurons
-Supportive nerve fibers and form the myelin sheaths
15.Myelin sheaths Correct Ans: -gaps between the segments and the Nodes of
-Made is segments by glia cells
16.oligodendrocytes Correct Ans: located in the CNS
17.Schwann Cells Correct Ans: Located in the PNS
18.central nervous system Correct Ans: -consists of the brain and spinal cor
-structural and center of the entire nervous system
-Main function is evaluation
Astrocytes Correct Ans: -Starshaped, Largest and most numerous type of g
-cell extensions connect to neurons and capillaries
-transfers the nutrients from the blood to the neuron.
-helps form and operate synapse
Microglia Correct Ans: -small usually stationary cells
-phagocytes
12. Ependymal cells Correct Ans: -lined fluid filled cavities in the CNS
-make and circulate Cerebrospinal fluid matic integra-
e effect
nterneuron
->od
y
Hondros Bio 253 exam 2
.Afferent Division Correct Ans: (sensory) brings signals into the CNS
-consist of all incoming pathways
21.somatic sensory division Correct Ans: carries feedback information to the so tion center in the CNS.
-these include the skin muscles and joints
22.Efferent Division Correct Ans: (motor)- carries signals to the effectors outside the nervous system
Consist of all outgoing motor pathways
-sympatric division parasympathetic division
23.somatic motor division / ans Correct Ans: carries information to somatic effectors such as the skeletal muscles
-carries information to autonomic and visceral effectors like smooth and cardiac muscles , adipose tissue
24.interneurons Correct Ans: integrate signals
25.Reflex Arc Correct Ans: The path of which something is sensed and then th
26.Reflex arc path order Correct Ans: receptor -> afferent sensory neutron -> i efferent neuron ->effector
19. peripheral nervous system Correct Ans: Nerves that are the outlier of the b
-Cranial nerves originate from the brain
-spinal nerves originate from the spinal cord
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 YourExamplug. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
81113 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now