What is tegmentum pontis?
The pontine tegmentum is all the material dorsal from the basilar pons to the fourth ventricle. Along with the dorsal surface of the medulla, it forms part of the rhomboid fossa – the floor of the fourth ventricle.
What does the pontine nucleus do?
The pontine nuclei (PN) are the largest of the precerebellar nuclei, neuronal assemblies in the hindbrain providing principal input to the cerebellum. The PN are predominantly innervated by the cerebral cortex and project as mossy fibers to the cerebellar hemispheres.
What is the function of tegmentum?
Tegmentum. Reticular formation: This highly diverse and integrative area contains a network of nuclei responsible for many vital functions including arousal, consciousness, sleep-wake cycles, coordination of certain movements, and cardiovascular control.
What function is the pontine tegmentum related to in dreaming?
The pontine tegmentum controls transitions between sleep states and was therefore first proposed as a possible main site of anatomic or functional impairments in narcolepsy.
What is cerebral peduncle?
The cerebral peduncles are the anterior part of the midbrain that connects the remainder of the brainstem to the thalami. They are paired, separated by the interpeduncular cistern, and contain the large white matter tracts that run to and from the cerebrum.
What is the pontine base?
Anatomical terms of neuroanatomy The basilar part of pons, also known as basis pontis, is the ventral part of the pons; the dorsal part is known as the pontine tegmentum. The basilar pons makes up two thirds of the pons within the brainstem.
What is a tegmentum?
Definition of tegmentum : an anatomical covering : tegmen especially : the part of the ventral midbrain above the substantia nigra formed of longitudinal white fibers with arched transverse fibers and gray matter.
What is in the telencephalon?
The telencephalon, commonly called the cerebral hemispheres, is the largest portion of the central nervous system (CNS) and consists of the cerebral cortex, subcortical white matter (commissural, association, and projection fibers), and basal nuclei.
What does the metencephalon turn into?
The metencephalon grows into the cerebellum and pons of the adult brain, and the myelencephalon will become the medulla of the adult brain, containing a large fourth ventricle and posterior choroid plexus in the thin roof. The hindbrain is a conduit for information passing between the forebrain and the spinal cord.