What does the ventral medulla do?
The nucleus paragigantocellularis lateralis (PGi) in the rostral ventral medulla is implicated in several functions including cardiovascular control, respiration, pain and analgesia.
What does the rostral ventromedial medulla do?
The rostral ventromedial medulla (RVM) in the brainstem is one major final common output of this endogenous modulatory system and is involved in the relay of sensory information between the spinal cord and brain.
Where is the ventral medulla located?
Anatomical terms of neuroanatomy The rostral ventromedial medulla (RVM), or ventromedial nucleus of the spinal cord, is a group of neurons located close to the midline on the floor of the medulla oblongata (myelencephalon).
What is rostral ventrolateral medulla?
The rostral ventrolateral medulla (RVLM), also known as the pressor area of the medulla, is a brain region that is responsible for basal and reflex control of sympathetic activity associated with cardiovascular function. It receives inhibitory GABAergic input from the caudal ventrolateral medulla (CVLM).
What is brain dead?
Brain death: Irreversible cessation of all functions of the entire brain, including the brain stem. A person who is brain dead is dead, with no chance of revival. Coma: A state of profound unresponsiveness as a result of severe illness or brain injury. In general, comas last just a few days or weeks.
What is the medial medullary system?
The medulla is continuous with the pons rostrally at the pontomedullary junction and the spinal cord caudally at the C1 vertebrae. Medial medullary structures are the pyramid, medial lemniscus, hypoglossal nucleus, and medial longitudinal fasciculus.
Where is the medulla located in the brainstem?
The medulla oblongata or simply medulla is the part of the brainstem. The medulla is continuous with the pons rostrally at the pontomedullary junction and the spinal cord caudally at the C1 vertebrae. Medial medullary structures are the pyramid, medial lemniscus, hypoglossal nucleus, and medial longitudinal fasciculus.
Rostral Ventromedial Medulla The rostral ventromedial medulla (RVM) is a key structure in descending pain modulation, which includes the midline nucleus raphe magnus and the adjacent reticular formation ventral to the gigantocellular reticular nucleus (Fields et al., 2006). From: International Review of Neurobiology, 2011
What does the ventral surface of the medulla face?
Its ventral (anterior) surface faces the basilar part of occipital bone and the dens of axis (C2), separated from them by the meninges and ligaments of the atlanto-occipital and atlantoaxial joints. The dorsal (posterior) surface of the medulla faces the fourth ventricle of the brain.