The medulla oblongata (medulla) is one of the three regions that make up the brainstem. The medulla oblongata is located in the brain stem, anterior to (in front of) the cerebellum. Apart from being what makes alligators so ornery all the time, the medulla oblongata is implicated in a number of autonomic (involuntary) physiological processes such as breathing, sneezing, vomiting, regulation of blood pressure, and heartbeat. Medulla oblongata, the lowest part of the brain and the lowest portion of the brainstem. PLAY. It resides in the posterior cranial fossa, below the tentorium cerebelli. The medulla houses essential ascending and descending nerve tracts as well as brainstem nuclei Medulla oblongata. upper continuation of sp cord caudal part like sp cord cranial part is split open forming lower part of floor of 4th ventricle. Anatomical structure also known as medulla oblongata or mylencephalon ; It constitutes the lowest of the three segments of the brain stem , located between the brain stem bridge or annular protuberance (above) and the spinal cord (below). Medulla oblongata. Medulla oblongata. The medulla oblongata is a cone-shaped neuronal mass in the brain located in the brain stem, directly below the pons and anterior to the cerebellum. Definition. The medulla oblongata is part of the autonomous central nervous system that directly connects the brainstem with the spinal cord. median fissure . On its anterior face is the anterior median fissure, continuation of that described in the spinal cord. 2-17). The medulla oblongata is comprised of many discrete subsections and sensor-motor nuclei, including the somatic motor nuclei, visceral sensory nuclei, reticular formation, somatic sensory nuclei, and octavolateralis nuclei (reviewed by: Smeets et al., 1983; Smeets, 1998), but this structure will primarily be discussed in terms of the octavolateralis areas. It is a rounded bulge that is an enlargement of the upper spinal cord (see Fig. As part of the brainstem, the medulla oblongata helps transfer messages between parts of the brain and spinal cord. Gross structure General characteristics and position. It is involved in a very complex feedback loop that prepares and aids in movement of the… READ MORE. The position of the medulla oblongata enables it to be the primary connection of the central nervous system to the peripheral nervous system as it is continuous with the spinal cord. STUDY. The medulla oblongata is a portion of the hindbrain that controls autonomic functions such as breathing, digestion, heart and blood vessel function, swallowing, and sneezing. Medulla Oblongata & Pons external structure. sulci and funiculi of sp cord are continuous on oblongata. The medulla oblongata is a funnel shaped structure that constitutes the terminal portion of the brainstem. A median fissure (furrow) is present on the anterior surface. External features of oblongata. ant.

The medulla oblongata is located at the base of the brainstem and is essential for a broad range of somatic and autonomic motor and sensory functions. On either side of this fissure are landmark swellings called pyramids. The medulla is a continuation of the spinal cord that commences at the foramen magnum. Motor and sensory neurons from the midbrain and forebrain travel through the medulla. The medulla oblongata is the most caudal brainstem structure. Posted on July 14, 2017 October 7, 2019 / 1 / Tags MCQs neuroanatomy, MCQs on medulla oblongata, nuclei of medulla, tracts in medulla Categories Neuroanatomy Post Author: POONAM KHARB JANGHU One Reply to “Medulla oblongata -Quiz” The medulla oblongata and spinal cord merge at the opening located at the base of the skull, the foramen magnum. Neurons in the different regions of the medulla oblongata transmit motor and sensory impulses and carry out complex integrative functions, helping regulate processes such as respiration, heart rate, and digestion. Medulla is Latin for middle; oblongata refers to this part of the brain’s elongated form. It is the most inferior of the three and is continuous above with the pons and below with the spinal cord. Older terminology identified it as the bulb. The putamen is a large structure located within the brain.