The term "tectum" refers to a part of the brain located in the midbrain, specifically within the mesencephalon. It plays a crucial role in processing visual and auditory information. The tectum is divided into two main structures: the superior colliculus, which is involved in visual processing, and the inferior colliculus, which is important for auditory processing. In addition to its sensory functions, the tectum is also involved in reflexive movements, helping organisms respond to stimuli in their environment. This makes it essential for coordinating actions based on what is seen or heard, contributing to survival and interaction with surroundings.