Contents of anatomical snuff box are (A)Radial Artery (B)Tendon of Abductor Poilicis longus (C)Tendon of extensor poilicis brevis (D)Scaphoid bone (E)Superficial cutaneous branch of radial nerve
**Question:** Contents of anatomical snuff box are (A) Radial Artery, (B) Tendon of Abductor Pollicis Longus, (C) Tendon of Extensor Pollicis Brevis, (D) Scaphoid Bone, and (E) Superficial Cutaneous Branch of Radial Nerve.
**Core Concept:** Anatomical Snuff Box is a space found in the palm of the hand, located between the tendons of the Extensor Pollicis Brevis and Abductor Pollicis Brevis muscles, as well as the superficial branch of the radial artery and nerve.
**Why the Correct Answer is Right:**
The correct answer is (B) Tendon of Abductor Pollicis Longus, (C) Tendon of Extensor Pollicis Brevis, and (E) Superficial Cutaneous Branch of Radial Nerve.
The Anatomical Snuff Box is a small space found in the palm of the hand, adjacent to the thumb. It contains several important structures:
1. **Tendon of Abductor Pollicis Longus (Option B):** This tendon originates from the muscles of the forearm and inserts into the base of the thumb. Its presence contributes to the content of the Snuff Box, as it is one of the muscles responsible for the abduction of the thumb.
2. **Tendon of Extensor Pollicis Brevis (Option C):** Similar to the Abductor Pollicis Longus, this tendon also originates from the forearm muscles and inserts into the base of the thumb. Its inclusion in the Snuff Box demonstrates its relationship to the surrounding structures and the importance of this area in thumb movement.
3. **Superficial Cutaneous Branch of Radial Nerve (Option E):** This branch of the radial nerve provides sensation to the skin over the Snuff Box, ensuring the area is properly innervated and functional.
4. **Scaphoid Bone (Option D):** Although the scaphoid bone is part of the carpal bones, it is included in the Snuff Box due to its close proximity to the tendons and nerves within the space.
5. **Artery (Option A):** The radial artery is a major blood vessel in the upper limb, but it is not contained within the Snuff Box. Instead, the superficial cutaneous branch of the radial nerve supplies the skin over the Snuff Box.
**Why Each Wrong Answer is Incorrect:**
6. **Tendon of Extensor Pollicis Brevis (Option C):** The tendon of Extensor Pollicis Brevis is another important tendon in thumb movement, but it is not specifically mentioned in the Snuff Box contents.
7. **Tendon of Flexor Pollicis Brevis (Option F):** This tendon is responsible for flexing the thumb, not abducting it. Its inclusion would not accurately represent the primary function of the area.
8. **Tendon of Flexor Pollicis Brevis (Option F):** Similar to Option F, the Flexor Pollicis Brevis tendon is responsible for flexing the thumb, not abduct