What is the insertion point for the sternocleidomastoid muscle?

The insertion point for the sternocleidomastoid muscle is indeed the lateral surface of the mastoid process of the temporal bone. This muscle plays a crucial role in the movement of the head and neck. When it contracts, it can produce rotation of the head and flexion of the neck. The mastoid process serves as an effective insertion point for this muscle, allowing it to exert force on the skull, facilitating these movements.

In terms of anatomical connections, the sternocleidomastoid originates from two distinct locations: the manubrium of the sternum and the clavicle, which allows it to connect well with the mastoid process. This anatomical arrangement results in a strong muscle capable of powerful movements and stabilizing the head during various activities. Understanding the insertion of skeletal muscles is vital for grasping their functional significance in human movement and stability.