QCM : Hand Acupuncture and Anatomy — 9 questions

Questions et réponses du QCM

1. What is the primary nerve supplying the Yue3 region on the dorsal hand?

Median nerve
Musculocutaneous nerve
Ulnar nerve
Radial nerve branch

Radial nerve branch

Explication

The Yue3 region is mainly innervated by a branch of the radial nerve, which provides sensory innervation to the dorsal aspect of the hand, particularly around the third metacarpal area. This nerve's superficial location makes it accessible for clinical assessment and acupuncture.

2. Where is the Yue3 acupuncture point located?

On the palmar side of the hand at the base of the middle finger.
On the dorsal hand at the junction of the third metacarpal and proximal phalanx.
On the dorsal wrist near the radial styloid process.
On the lateral side of the forearm near the elbow.

On the dorsal hand at the junction of the third metacarpal and proximal phalanx.

Explication

Yue3 is located on the dorsal hand at the junction of the third metacarpal and proximal phalanx, which is an accessible superficial site ideal for acupuncture.

3. Which arteries primarily supply blood to the Yue3 region?

Ulnar artery
Radial artery
Palmar digital arteries
Dorsal digital arteries

Dorsal digital arteries

Explication

The dorsal digital arteries are responsible for supplying blood to the dorsal hand, including the Yue3 region. They run alongside the nerves and are important for maintaining tissue health and are relevant in vascular assessments and interventions.

4. Which nerve primarily supplies sensation to the Yue3 point?

Ulnar nerve.
Median nerve.
Radial nerve branch.
Musculocutaneous nerve.

Radial nerve branch.

Explication

The radial nerve branch provides sensory innervation to Yue3, transmitting signals from the dorsal hand.

5. Which muscles are located overlying or adjacent to the Yue3 point on the dorsal hand?

Extensor digitorum communis and interossei
Thenar muscles
Flexor digitorum superficialis
Palmaris longus

Extensor digitorum communis and interossei

Explication

The extensor digitorum communis and interossei muscles are situated over or near the Yue3 region on the dorsal hand. These muscles are involved in finger extension and abduction, and their relation to Yue3 is important for palpation and understanding regional anatomy.

6. Which arteries supply blood to the Yue3 region?

Palmar digital arteries.
Radial artery at the wrist.
Dorsal digital arteries.
Ulnar artery at the wrist.

Dorsal digital arteries.

Explication

Dorsal digital arteries supply blood to the dorsal hand tissues, including the Yue3 region.

7. Which muscles are located overlying the Yue3 point?

Flexor digitorum profundus and superficialis.
Extensor digitorum communis and interossei muscles.
Palmar interossei muscles.
Thenar muscles of the thumb.

Extensor digitorum communis and interossei muscles.

Explication

Yue3 overlies the extensor digitorum communis and interossei muscles, which facilitate finger extension and hand movements.

8. Why should care be taken during needling at Yue3?

To avoid interference with the median nerve.
To prevent neurovascular injury.
To prevent damage to the ulnar nerve.
Because it is located deep within the muscle layers.

To prevent neurovascular injury.

Explication

Yue3 is superficial and close to neurovascular bundles, so proper technique is essential to avoid injury.

9. What is the significance of palping Yue3 in clinical practice?

To assess the elasticity of the extensor muscles.
To diagnose nerve or vascular issues affecting the dorsal hand.
To measure the bone density of the third metacarpal.
To evaluate skin temperature only.

To diagnose nerve or vascular issues affecting the dorsal hand.

Explication

Palpation of Yue3 helps in diagnosing nerve or vascular problems in the dorsal hand, as it provides insight into nerve and blood flow integrity.

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Yue3 — location?

Dorsal hand at 3rd metacarpal junction

Yue3 — location?

Dorsal hand at 3rd metacarpal-phalange junction.

Yue3 — innervation?

Radial nerve branch

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