Sites for Radial, Median, Ulnar and Volar nerve blocks

Multiple Choice Questions (MCQs)

1. What is the primary purpose of performing a radial nerve block?
   • A) To anesthetize the palmar aspect of the forelimb
   • B) To anesthetize the dorsal aspect of the forelimb
   • C) To provide analgesia for the elbow joint
   • D) To block sensation in the digits
     Answer: B) To anesthetize the dorsal aspect of the forelimb
2. Where is the injection site for the median nerve block at the elbow?
   • A) Between the tendons of the flexor carpi ulnaris and flexor digitorum profundus
   • B) Between the tendons of the palmaris longus and flexor carpi radialis
   • C) Lateral to the biceps tendon
   • D) Medial to the ulnar artery
     Answer: B) Between the tendons of the palmaris longus and flexor carpi radialis
3. Which nerve is blocked at the site located between the ulnar artery and the tendon of the flexor carpi ulnaris?
   • A) Median nerve
   • B) Radial nerve
   • C) Ulnar nerve
   • D) Volar nerve
     Answer: C) Ulnar nerve
4. What anatomical landmark is used for the radial nerve block at the elbow?
   • A) Medial epicondyle
   • B) Lateral epicondyle
   • C) Biceps tendon
   • D) Acromion
     Answer: C) Biceps tendon
5. Which of the following nerves is primarily responsible for innervating the flexor muscles of the forearm?
   • A) Ulnar nerve
   • B) Median nerve
   • C) Radial nerve
   • D) Musculocutaneous nerve
     Answer: B) Median nerve
6. The volar nerve block is performed to anesthetize which aspect of the forelimb?
   • A) Dorsal
   • B) Lateral
   • C) Palmar
   • D) Medial
     Answer: C) Palmar
7. What is the injection site for the ulnar nerve block at the wrist?
   • A) Between the tendons of the palmaris longus and flexor carpi radialis
   • B) Under the tendon of the flexor carpi ulnaris
   • C) Lateral to the biceps tendon
   • D) In the anatomic snuff box
     Answer: B) Under the tendon of the flexor carpi ulnaris
8. Which nerve is located at the anatomic snuff box for a radial nerve block?
   • A) Median nerve
   • B) Ulnar nerve
   • C) Radial nerve
   • D) Volar nerve
     Answer: C) Radial nerve
9. Which of the following statements is true regarding the median nerve block?
   • A) It is performed at the elbow only.
   • B) It provides anesthesia to the dorsal aspect of the paw.
   • C) It is performed between the tendons of the palmaris longus and flexor carpi radialis.
   • D) It is not used for forelimb procedures.
     Answer: C) It is performed between the tendons of the palmaris longus and flexor carpi radialis.
10. The radial nerve block at the mid-humeral level is performed midway between which two anatomical landmarks?
    • A) Acromion and medial epicondyle
    • B) Acromion and lateral epicondyle
    • C) Lateral epicondyle and biceps tendon
    • D) Biceps tendon and radial styloid process
      Answer: B) Acromion and lateral epicondyle

True/False Questions

1. The radial nerve block is primarily performed to anesthetize the palmar aspect of the forelimb.
   Answer: False
2. The median nerve block can be performed at both the elbow and wrist.
   Answer: True
3. The ulnar nerve is located medial to the biceps tendon.
   Answer: False
4. The volar nerve block targets the palmar aspect of the forelimb.
   Answer: True
5. The injection site for the radial nerve block at the elbow is located at the medial epicondyle.
   Answer: False
6. The anatomic snuff box is used as an injection site for the radial nerve block.
   Answer: True
7. The ulnar nerve block is performed under the tendon of the flexor carpi ulnaris at the elbow.
   Answer: False
8. The median nerve is responsible for innervating the flexor muscles of the forearm.
   Answer: True
9. The radial nerve block is typically performed at the wrist joint.
   Answer: False
10. The collateral ligaments are important for stabilizing the elbow joint.
    Answer: True

Fill in the Blanks

1. The radial nerve block is performed to anesthetize the __________ aspect of the forelimb.
   Answer: dorsal
2. The injection site for the median nerve block at the elbow is located between the tendons of the __________ and flexor carpi radialis.
   Answer: palmaris longus
3. The ulnar nerve block is performed under the tendon of the __________ at the wrist.
   Answer: flexor carpi ulnaris
4. The __________ nerve is responsible for innervating the flexor muscles of the forearm.
   Answer: median
5. The volar nerve block is performed to anesthetize the __________ aspect of the forelimb.
   Answer: palmar
6. The radial nerve block at the elbow is performed approximately 2 cm __________ to the biceps tendon.
   Answer: lateral
7. The __________ nerve block is performed at the anatomic snuff box.
   Answer: radial
8. The __________ nerve is located between the ulnar artery and the tendon of the flexor carpi ulnaris at the elbow.
   Answer: ulnar
9. The injection site for the median nerve block at the wrist is located between the tendons of the palmaris longus and __________.
   Answer: flexor carpi radialis
10. The __________ nerve block can be performed at both the elbow and wrist joints.
    Answer: median