BSC 2346L MODULE 6 CASE STUDY: BSC 2346L Module 6 Case Study AP1 Questions and Answers

Module 6 Case Study AP1

 Question 1
1 out of 1 points
Donna, a 42-year-old mother of two, has been experiencing intermittent tingling and
numbness in both of her feet. She has also had trouble holding a pen while writing. In the
past few months, the tingling and numbness in her extremities seemed to subside on its
own, so she was not very concerned. Recently, though, the symptoms have spread to her
knees and thighs and are persisting.

Yesterday, she stumbled when getting out of bed in the morning. When she tried to
stand, her right leg was too weak to hold her weight and she fell again. She noticed that
she scraped her right knee during the fall, but does not feel any pain from the wound.
Donna notices that she has blurry vision and thinks that might be the reason she fell.

All of the following indicate sensory deficits EXCEPT:
Selected Muscular
Answer:
weakness
 Question 2
Needs Grading
Donna does not feel the wound on her knee. In a normal situation, describe how
this sensory input of a scraped knee would result in the feeling of pain.

Selected When you scrape your knee the site has damage to the tissues which is
Answer:
registered by nociceptors, or pain receptors. These pain receptors are the
ending points of a neuron and send an electrical signal up the axon or nerve
fiber to a bundle of other nerve fibers that creates a peripheral nerve. The
electrical signal travels up neurons in the peripheral nerve towards the neck
and reaches the spinal cord. At this point the electrical signal travels to
another neuron through a small gap called a synapse. This is able to be
done through neurotransmitters. The electrical signal then travels up the
nerve fiber of the spinal cord and relays the sensory input information to
the brain and allows us to feel and react to the pain.
MyDr. (n.d.). Pain and how you send it. Retrieved May 10, 2018, from
http://www.mydr.com.au/pain/pain-and-how-you-sense-it

Respons [None Given]
e
Feedbac
k:
 Question 3
Needs Grading
Donna has weakness in her right leg, but her left leg is functioning normally.
Which components of the nervous system are involved with skeletal muscle

, movement? Be specific about how the motor impulse moves through the body.

Selected The somatic nervous system is responsible for muscle movement. A motor
Answer:
impulse is sent through the body by sending the signals from neuron to
neuron via th synapse and traveling along motor fibers. This signal then
reaches the muscle and an action response is carried out.
Biology dictionary. (n.d.). Somatic nervous system.
Retrieved May 10, 2018, from
https://biologydictionary.net/somatic-nervous-system/

Respons [None Given]
e
Feedbac
k:
 Question 4
1 out of 1 points
Which of the following correctly defines a motor unit?


Selected A single neuron and all the muscle cells it
Answer: innervates

 Question 5
1 out of 1 points
Which of the following statements is true?


Selected Donna is experiencing both motor and
Answer: sensory deficits.

 Question 6
Needs Grading
List and describe any and all symptoms in Donna’s history that could be related to a
pathology of her motor neurons.
Selected Holding a pen while writing, muscle weakness in lower extremities.
Answer:
Henderson, J. M. (n.d.). Motor impairment. Retrieved May 10, 2018,
from http://www.neuromodulation.com/motor-impairment

Response [None Given]
Feedback:
 Question 7
1 out of 1 points
Donna’s primary care physician wants to screen her for Multiple Sclerosis. Which
of the following tests would provide the most definitive diagnosis for MS?


Selected MRI
Answer: