Question

the ulnar nerve is exposed when it crosses the posterior surface of the
medial epicondyle.
greater tubercle.
lesser tubercle.
deltoid tuberosity.
trochlea.

Explanation:

The ulnar nerve is superficial as it passes behind the medial epicondyle of the humerus. This makes it vulnerable at this location. The other options are not associated with the exposure - point of the ulnar nerve.

Answer:

A. medial epicondyle