Uploaded January 2023 | Updated September 2026, 1 week ago

---

🌐 Website: taimtalksmed.com
🫀 Help keep this content free: youtube.com/channel/UCEr7pkSXVsHcBLLBcJAGV-Q/join
🔬 Get 10% off anatomy lab models (affiliate link): https://anatomywarehouse.com?aff=34

📲 Other Links:
Instagram: instagram.com/taimtalksmed
Discord: discord.com/invite/DENMUpS8ey

Content:
0:00 Introduction
01:50 Content
02:13 Intercostal Nerve Course
04:52 Intercostal Nerve Branches
08:30 Typical vs. Atypical Intercostal Nerves
12:30 Subcostal Nerve

Intro:
- Intercostal Spaces (spatium intercostale)

Intercostal Nerves (nervi intercostales):
- Typical Intercostal nerve
○ Muscular branches (rami musculares)
○ Somatosensory Branches
§ Lateral cutaneous branches (rami cutanei laterales)
§ Anterior cutaneous branches (rami cutanei anteriores)
§ Collateral branch
- Atypical Intercostal Nerve
○ 1st Nerve:
§ Superior branch joins brachial plexus
§ Inferior branch continues as intercostal nerve
○ 2nd intercostal nerve
§ Has Intercostobrachial nerve (nervi intercostobrachiales)
○ 7th, 8th, 9th, 10th, 11th Intercostal nerves
§ Also called thoracoabdominal nerves
§ Innervate abdominal wall
- Run in a neurovascular bundle

Subcostal Nerve (nervus subcostalis)
- Has the same branches as the intercostal nerves.
- Give off a communicating branch that helps form iliohypogastric nerve of the lumbar plexus