Anatomy Bones and Muscles · MU Pleven

102. Radial and ulnar arteries

Explains the division of the brachial artery at the cubital fossa into the radial and ulnar arteries and traces each vessel's course down the forearm. A table sets out the radial artery's branches with their supply areas and anastomoses, and the note then lists the ulnar artery's seven branches, including recurrent, interosseous and palmar branches. It also notes which hand structures the radial artery alone supplies.

Inside: 2 sections · 4 labelled pictures · 1 table · 13 flashcards · 2 min

Topic 101 of 236 in the MU Pleven syllabus for Anatomy Bones and Muscles (Medicine, Year 2). The free AceMed note covers it in 2 sections, about 229 words (2 min of reading), with 13 flashcards.

In this note

  1. RADIAL & ULNAR ARTERIES
  2. Ulnar artery:

RADIAL & ULNAR ARTERIES

  • At the cubital fossa the brachial artery bifurcates into Radial and Ulnar arteries.

S: the forearm.

  • Radial art. runs on the lateral aspect of the forearm before it reaches the wrist and branches out to supply the hand.
  • → Proximally runs under brachioradialis and then lies lateral to flexor carpi radialis muscle.

Branches

Branches in the hand:

→ The radial artery (only) supplies the thumb + ½ index finger.

Ulnar artery:

The ulnar and radial artery descend down their respective sides of the forearm. In the upper part of its course, the ulnar artery is covered by many muscles, including flexor digitorum superficialis, pronator teres, and flexor carpi radialis. It lies on top of brachialis and flexor digitorum profundus. The ulnar head of pronator teres separates the ulnar artery from the median nerve (which passes between the two heads of pronator teres).

The ulnar artery lies between flexor digitorum superficialis and flexor carpi ulnaris along most of its length and gives perforating branches to the muscles on the ulnar side of the forearm. The radial artery lies underneath the brachioradialis and emerges lateral to the median nerve at the wrist.

Branches (7)

  • Anterior ulnar recurrent: Make anastomosis with Inferior ulnar collateral artery at elbow joint
  • Posterior ulnar recurrent: " " Superior ulnar collateral artery
  • Common interosseus
  • anterior
  • Posterior
  • Palmar carpal
  • Dorsal carpal
  • Superficial palmer
  • Deep palmar

I a Am Pretty Smart

Read the full note free

The whole note, all 2 sections, is free with an AceMed account, with its 13 flashcards. Premium adds flashcard recall, highlights and Ask AI.

Start freeAlready a member? Open the note