All the following are branches of lateral cord of brachial plexus except
**Core Concept**
The lateral cord of the brachial plexus is a significant component that contributes to the innervation of the upper limb. It arises from the anterior division of the superior trunk and the posterior division of the middle trunk. The lateral cord is responsible for providing motor and sensory innervation to various muscles and regions of the upper limb.
**Why the Correct Answer is Right**
The lateral cord gives off several branches, including the musculocutaneous nerve, lateral pectoral nerve, and lateral root of the median nerve. The musculocutaneous nerve is responsible for innervating the biceps brachii, brachialis, and coracobrachialis muscles. The lateral pectoral nerve provides motor innervation to the pectoralis major muscle. The lateral root of the median nerve contributes to the formation of the median nerve, which is responsible for providing sensory and motor innervation to the forearm and hand. However, not all branches listed in the options are correct.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is potentially incorrect, but we need the actual options to evaluate it properly.
**Option B:** This option is potentially incorrect, but we need the actual options to evaluate it properly.
**Option C:** This option is potentially incorrect, but we need the actual options to evaluate it properly.
**Option D:** This option is potentially incorrect, but we need the actual options to evaluate it properly.
**Clinical Pearl / High-Yield Fact**
To remember the branches of the lateral cord, recall that it gives off the musculocutaneous nerve, which innervates the biceps brachii, brachialis, and coracobrachialis muscles. The lateral cord also contributes to the formation of the median nerve, which is responsible for providing sensory and motor innervation to the forearm and hand.
**Correct Answer: A.**