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Ulnar Nerve – One of the Most Commonly Asked Long Questions in Anatomy

In this video, you will learn the complete ulnar nerve in an exam-ready, diagram-based format.

✅ This lecture is planned around a very commonly asked 15-mark question on the ulnar nerve with proper subdivisions.

📌 What You Will Learn in This Video

✅ Formation of Ulnar Nerve

Origin from the medial cord of brachial plexus

Root values and formation explained clearly

Why a diagram is essential for full marks

✅ Course of Ulnar Nerve (Divided Systematically)

The nerve is taught segment-wise:

Course in Axilla

Course in Arm

Passing behind medial epicondyle (funny bone area)

Course in Forearm

Course in Hand

✅ Branches of Ulnar Nerve

You will remember all branches under clear headings:

Motor branches

Articular branches

Cutaneous branches:

Palmar cutaneous

Dorsal cutaneous

✅ Ulnar Nerve in the Hand

Passage through Guyon’s canal

Division into:

Superficial terminal branch

Deep terminal branch

Muscles supplied include:

Hypothenar muscles

Palmar & dorsal interossei

Medial two lumbricals

Adductor pollicis

Sometimes flexor pollicis brevis

✅ Applied Anatomy (Highly Important for Clinics & Surgery)

Injuries explained at 3 major levels:

1. Cubital Tunnel Syndrome

Motor and sensory deficits

Development of ulnar claw hand

2. Guyon’s Canal Lesion

Sparing of dorsal sensation

Cutaneous loss in digits

3. Hook of Hamate Injury

Pure motor lesion

No sensory loss

Special clinical tests covered:

Froment’s sign

Paper test

Mechanism of claw hand explained muscle-wise

✍️ Bonus: Diagram-Based Learning

Beautiful hand-drawn diagrams

Simple line diagram technique for quick revision

Perfect for writing long answers in university exams

🎓 Useful For

This video is ideal for:

1st Year MBBS Students

BDS Students

Physiotherapy Students

BAMS / BHMS Students

Nursing Students

Surgery Residents & Postgraduates

📚 Reference Videos

• Carpal Tunnel Syndrome – Anatomy
   • Anatomy of Carpal tunnel syndrome  

• Cubital Fossa: Anatomy, Boundaries & Clinical Significance
   • Exploring the Cubital Fossa: Anatomy, Boun...  

• Pectoral Region: Anatomy & Clinical Insights
   • Understanding the Pectoral Region: Anatomy...  

• Axilla: Boundaries, Walls & Overview of the Brachial Plexus
   • Title: Axilla: Boundaries, Walls & Brachia...  

• Mammary Gland: Development & Histology Explained (Part 1)
   • Unlocking the Secrets of the Mammary Gland...  

• Mammary Gland: Development & Histology (Part 2)
   • Unlocking the Secrets of the Mammary Gland...  

0:00 Introduction – Why is Ulnar Nerve called the Musician’s Nerve?

0:35 Commonly Asked 15-Mark Question Framework

0:56 Formation – Ulnar Nerve from Medial Cord of Brachial Plexus

2:18 Course of Ulnar Nerve (Axilla → Arm → Forearm → Hand)

4:55 Branches of Ulnar Nerve (Motor + Cutaneous + Terminal Branches)

5:30 Cutaneous branches of Ulnar nerve

6:28 Ulnar Nerve in the Hand – Guyon’s Canal & Distribution

8:26 Diagram Technique – How to Draw and Remember Ulnar Nerve

12:27 Applied Anatomy – Cubital Tunnel Syndrome & Claw Hand

19:04 Wrist Lesions – Guyon’s Canal vs Hook of Hamate Injury + Froment Sign

22:20 Final Summary & Exam Revision