AN11.1-6 | Arm & Cubital fossa — Part 3

SELF-CHECK — Clinical Anatomy & Anastomosis Check

In Saturday night paralysis, why is the triceps muscle usually spared?

A. Triceps is supplied by the ulnar nerve, not the radial nerve

B. The branches to triceps arise above the radial groove, before the site of compression

C. Triceps has dual nerve supply from both radial and musculocutaneous nerves

D. The compression occurs below the radial groove

Collateral arteries in the elbow anastomosis travel in which direction?

A. Ascending (from forearm towards arm)

B. Descending (from arm towards forearm)

C. Transversely across the joint

D. They do not have a fixed direction