Nerves that supply the skin of the arm region(MA)

Question 1

What are the nerves that supply sensory innervations to the skin of the arm? and what are the main 5 nerves that provides sensory innervation to the forearm?

Answer 1

There are 5 nerves that supply the skin of the arm and they are supraclavicular nerve, axillary nerve, radial nerve, median nerve, and ulnar nerve

-Superior lateral brachial cutaneous (sensory innervation): supplies the skin overlying the deltoid and the lateral side of the mid-arm

-Intercostobrachial and medial brachial cutaneous (sensory innervation): supplies the medial side of the arm

-Inferior lateral brachial cutaneous (sensory innervation):upplies the inferolateral aspect of the arm

-Posterior brachial cutaneous (sensory innervation): supplies the skin on the posterior aspect of the arm

Question 2

What are the motor innervations and what do they innervate

Answer 2

Anterior compartment: Musculocutaneous nerve
Posterior compartment: Radial nerve