Question

Long thoracic nerve (C5, C6, C7)

A) Phrenic nerve (C3, C4, C5)
B) Lateral pectoral nerve (C5, C6, C7)
C) Medial pectoral nerve (C8, T1)
D) Thoracodorsal nerve (C6, C7, C8)

Answer 1

The long thoracic nerve (C5, C6, C7) originates from the brachial plexus and innervates the serratus anterior muscle. It is important for stabilizing the scapula during arm and shoulder movements.

Step-by-step explanation:

The subject of this question is Biology. The long thoracic nerve (C5, C6, C7) is responsible for innervating the serratus anterior muscle. It originates in the brachial plexus, which is a network of nerves that reorganize spinal nerves C4 through T1. The long thoracic nerve plays a crucial role in stabilizing the scapula during arm and shoulder movements.