The<unk>  consists of more than 100 small neural networks, with varied functions including the following: # Somatic motor control – Some motor neurons send their axons to the<unk>  nuclei, giving rise to the reticulospinal tracts of the spinal cord. These tracts function in maintaining tone, balance, and posture—especially during body movements. The<unk>  also relays eye and ear signals to the cerebellum so that the cerebellum can integrate visual, auditory, and vestibular stimuli in motor coordination. Other motor nuclei include gaze centers, which enable the eyes to track and fixate objects, and central pattern generators, which produce rhythmic signals of breathing and swallowing. # Cardiovascular control – The<unk>  includes the cardiac and vasomotor centers of the medulla oblongata. # Pain modulation – The<unk>  is one means by which pain signals from the lower body reach the cerebral cortex. It is also the origin of the descending analgesic pathways. The nerve fibers in these pathways act in the spinal cord to block the transmission of some pain signals to the brain. # Sleep and consciousness – The<unk>  has projections to the thalamus and cerebral cortex that allow it to exert some control over which sensory signals reach the cerebrum and come to our conscious attention. It plays a central role in states of consciousness like alertness and sleep. Injury to the<unk>  can result in irreversible coma. # Habituation – This is a process in which the brain learns to ignore repetitive, meaningless stimuli while remaining sensitive to others. A good example of this is a person who can sleep through loud traffic in a large city, but is awakened promptly due to the sound of an alarm or crying baby.<unk>  nuclei that modulate activity of the cerebral cortex are part of the ascending<unk>  activating system.
Reticular formation
Moist desquamation
Craterization
Hyperkeratinization
Organ gifting
Desquamation
Glomerulation
Tissue expansion