Questions: PNS NERVES APPLICATION QUESTIONS For each item below, use the nerve maps that you have drawn to answer the question. Indicate which of the major peripheral nerves or branches (median, radial, ulnar, femoral, sciatic, tibial, common fibular nerves are your choices) would most likely be involved. Be sure to include right or left in your answers if mentioned in the question! 1. Numbness and tingling in the 5th digit and the medial surface of the 4th digit of the right hand (palmar side) 2. Midshaft fracture of the right humerus 3. Pain shooting down the posterior aspect of the thigh and into the anterior and posterior leg and into the sole of the foot. Numbness and muscle weakness in anterior thigh Tingling on the palmar aspect of digits 1,2,3, and the lateral side of digit 4 of the left hand. Altered sensation on lateral aspect of right leg and inability to dorsiflex the right foot. Pain radiating from the plantar aspect of digits 1,2,3, and the medial half of digit 4 in the right foot. 8. Severe fracture of the superior tibia. 9. Fracture at the neck of the fibula.

PNS NERVES APPLICATION QUESTIONS
For each item below, use the nerve maps that you have drawn to answer the question. Indicate which of the major peripheral nerves or branches (median, radial, ulnar, femoral, sciatic, tibial, common fibular nerves are your choices) would most likely be involved. Be sure to include right or left in your answers if mentioned in the question!

1. Numbness and tingling in the 5th digit and the medial surface of the 4th digit of the right hand (palmar side)
2. Midshaft fracture of the right humerus
3. Pain shooting down the posterior aspect of the thigh and into the anterior and posterior leg and into the sole of the foot.
   Numbness and muscle weakness in anterior thigh
   Tingling on the palmar aspect of digits 1,2,3, and the lateral side of digit 4 of the left hand.
   Altered sensation on lateral aspect of right leg and inability to dorsiflex the right foot.
   Pain radiating from the plantar aspect of digits 1,2,3, and the medial half of digit 4 in the right foot.
8. Severe fracture of the superior tibia.
9. Fracture at the neck of the fibula.
Transcript text: PNS NERVES APPLICATION QUESTIONS For each item below, use the nerve maps that you have drawn to answer the question. Indicate which of the major peripheral nerves or branches (median, radial, ulnar, femoral, sciatic, tibial, common fibular nerves are your choices) would most likely be involved. Be sure to include right or left in your answers if mentioned in the question! \begin{tabular}{|c|c|} \hline 1. & Numbness and tingling in the $5^{\text {th }}$ digit and the medial surface of the $4^{\text {th }}$ digit of the right hand (palmar side) \\ \hline 2. & Midshaft fracture of the right humerus \\ \hline 3. & Pain shooting down the posterior aspect of the thigh and into the anterior and posterior leg and into the sole of the foot. \\ \hline & Numbness and muscle weakness in anterior thigh \\ \hline & Tingling on the palmar aspect of digits $1,2,3$, and the lateral side of digit 4 of the left hand. \\ \hline & Altered sensation on lateral aspect of right leg and inability to dorsiflex the right foot. \\ \hline & Pain radiating from the plantar aspect of digits $1,2,3$, and the medial half of digit 4 in the right foot. \\ \hline 8. & Severe fracture of the superior tibia. \\ \hline 9. & Fracture at the neck of the fibula. \\ \hline \end{tabular}
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Solution

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The answer is as follows:

  1. Numbness and tingling in the 5th digit and the medial surface of the 4th digit of the right hand (palmar side): The answer is the ulnar nerve.

    • Explanation: The ulnar nerve innervates the 5th digit (little finger) and the medial half of the 4th digit (ring finger) on the palmar side of the hand.
  2. Midshaft fracture of the right humerus: The answer is the radial nerve.

    • Explanation: The radial nerve runs along the humerus and is particularly vulnerable to injury in midshaft fractures of the humerus.
  3. Pain shooting down the posterior aspect of the thigh and into the anterior and posterior leg and into the sole of the foot: The answer is the sciatic nerve.

    • Explanation: The sciatic nerve is responsible for innervating the posterior thigh and branches into the tibial and common fibular nerves, which innervate the anterior and posterior leg and the sole of the foot.

Summarized Answer:

  1. Ulnar nerve (right hand)
  2. Radial nerve (right humerus)
  3. Sciatic nerve
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