These nuclei are responsible for a number of functions including sleeping, attention, movement, the maintenance of muscle tone, and various cardiac, circulatory, and respiratory reflexes. Damage to this part of the brain is life-threatening. The metencephalon also houses many tracts that both ascend and descend as part of a reticular formation. These structures create a bulge called the pons. The pons is one major division of the metencephalon. The other is the cerebellum. This is the large convoluted structure on the brain stem. Damage to this part of the brain makes it impossible to control one’s movements and to adapt them to changing conditions. Like the metencephalon, the mesencephalon also has two divisions. They are the tectum and the tegmentum. The tectum is the dorsal surface of the midbrain. In mammals, it is composed of two pairs of bumps called the colliculi. The posterior part is called the inferior colliculi and has an auditory function. The anterior pair is called the superior colliculi and hasa visual function. The tegmentum is the part of the mesencephalon ventral to the
These nuclei are responsible for a number of functions including sleeping, attention, movement, the maintenance of muscle tone, and various cardiac, circulatory, and respiratory reflexes. Damage to this part of the brain is life-threatening. The metencephalon also houses many tracts that both ascend and descend as part of a reticular formation. These structures create a bulge called the pons. The pons is one major division of the metencephalon. The other is the cerebellum. This is the large convoluted structure on the brain stem. Damage to this part of the brain makes it impossible to control one’s movements and to adapt them to changing conditions. Like the metencephalon, the mesencephalon also has two divisions. They are the tectum and the tegmentum. The tectum is the dorsal surface of the midbrain. In mammals, it is composed of two pairs of bumps called the colliculi. The posterior part is called the inferior colliculi and has an auditory function. The anterior pair is called the superior colliculi and hasa visual function. The tegmentum is the part of the mesencephalon ventral to the