Final Exam - Requires Respondus LockDown Browser
Home
Submission Details:
Modules Due No due date Points 140 Questions 33 Time Limit 90 Minutes
Time: 90 minutes
Grades
Requires Respondus LockDown Browser Current 117 out of
Score:
140
117 out of
This quiz is currently locked. Kept Score: 140
Attempt History
Attempt Time Score
LATEST Attempt 1 90 minutes 117 out of 140
Score for this quiz: 117 out of 140
Submitted Mar 9 at 10:37pm
This attempt took 90 minutes.
pts
Question 1
The neuron pictured, below, is best described as:
A&P2 M1 Exam- page 2a.png
Bipolar
Coorrect!
Multipolar
Unipolar
Pseudounipolar
Question 2 pts
Name and describe what is occurring in the neuron cell membrane in section 2 of the diagram. Include the charge of the membrane during this phase.
Your Answer:
Depolarization, sodium gates are opened and the sodium floods into the axon amidst the depolarization of the action potential, causing the charge voltage to go from zero to +40 mV.
Depolarization: The sodium gates open and sodium rushes into the axon during the depolarization phase of the action potential.
Voltage travels past zero and then on up to +40 mV.
pts
Question 3
This part of a reflex is inside the CNS, made up of one or more synapses.
Your Answer:
Integration center
Interneurons, flexor withdrawal reflex or the reflex arc.
pts
Question 4
What is true about the flexor withdrawal reflex?
A. It does not involve interneurons.
B. It involves excitatory interneurons.
C. It involves inhibitory interneurons.
D. The effect of the reflex is to create a co-contraction of two muscles
E. A&D
Coorrect!
F. B&C
pts
Question 5
Label the nerves (A-C) in the figure below: A:
B:
C:
Your Answer:
lateral femoral cutaneous nerve
A- Lateral femoral cutaneous
Femoral nerve
B- Femoral nerve
Saphenous nerve
C- Saphenous
Question 6 pts
Which of the following is most likely a symptom of ALS?
Coorrect Answer
Impaired ability to swallow
Decreased sensation in the hands
Shrinkage of cerebral cortex
Increased size of brain ventricles
YooY uu Answered All the above
pts
Question 7
What is the purpose of the blood-brain barrier? Describe its maintenance from a cellular level.
Your Answer:
it is a diffusion barrier that aids in the prevention of unwanted materials getting inside of the CNS by keeping the brain and the spinal cord apart from the general blood supply. It is made up of the glial cells astrocytes and it is imporant for regulation to be kept up at all times to keep a stable environment which is paramount for protecting the neurons.
The blood-brain barrier is a diffusion barrier which prevents most particles from entering the central nervous system tissue, keeping the brain and spinal cord separate from general blood circulation. The blood-brain barrier is formed by the relatively impermeable brain capillaries, due to the glial cells astrocytes. Maintenance of the blood-brain-barrier is important to provide a stable chemical environment for the nervous system.
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 newsolutions. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.49. You're not tied to anything after your purchase.
