fissures are deep groove that divide lobes
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longitudinal fissure Rolando's fissure (fissure of Rolando) a groove running obliquely across the superolateral surface of a cerebral hemisphere, separating the frontal lobe from the parietal lobe. Called also central fissure and central sulcus.
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- LINK / CITE ADD TO WORD LIST. noun. The definition of a fissure is an opening in the Earth, or a disagreement or split on an issue. 1  A long and narrow crack in the earth that forms an opening is an example of a fissure.2  When two members of a group have a disagreement and split on an issue, this is an example of a fissure.he definition of a fissure is an opening in the Earth, or a disagreement or split on an issue.
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- With further subdivision of bronchi, each segment is divided into secondary lobules. The lobar fissures are often incomplete, making a connection between two apposed lobes. Conversely, more than the expected number of lobes may be produced by new fissures e.g. the azygous lobe of the lung. The additional lobes are termed 'accessory lobes'. The equivalent of the right middle lobe on the left side is termed the lingula.
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Top Tips for Freezing Cookies and Cookie Dough 1 Baked cookies will keep in the freezer for up to 3 or 4 weeks. 2  As with freezing cookie dough, double-wrap the cookies securely and write the date and the type of cookie on the outside of the package.
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Brain Lobes ++. Each hemisphere of the brain is divided into 4 lobes by sulci or fissures. The frontal lobe is separated from the parietal lobe by the central sulcus. The lateral fissure separates the frontal lobe from the temporal lobe.The parietooccipital sulcus separates the parietal lobe from the occipital lobe.ach hemisphere of the brain is divided into 4 lobes by sulci or fissures. The frontal lobe is separated from the parietal lobe by the central sulcus.
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- An anal fissure is a cut or a tear in the thin, delicate lining of your anus. The tear often exposes the muscle around the anus, called the anal sphincter. The damage can cause that muscle to spasm, which can pull apart the edges of the fissure even more.
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- Fissure: A cleft or groove. A fissure can be normal or abnormal. A fissure in the cerebral cortex is a normal feature. It is a deep fold that involves the entire thickness of the brain wall. A fissure in the anus is abnormal. It is a painful crack in the edge of the anus and is very painful.Also called an anal fissure or fissure in ano.t is a deep fold that involves the entire thickness of the brain wall. A fissure in the anus is abnormal. It is a painful crack in the edge of the anus and is very painful. Also called an anal fissure or fissure in ano.
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Lobes of the brain It is separated from the parietal lobe by a space between tissues called the central sulcus, and from the temporal lobe by a deep fold called the lateral sulcus also called the Sylvian fissure.
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fissure Full Definition of FISSURE. 1. : a narrow opening or crack of considerable length and depth usually occurring from some breaking or parting.2. a: a natural cleft between body parts or in the substance of an organ b: a break or slit in tissue usually at the junction of skin and mucous membrane.. : a narrow opening or crack of considerable length and depth usually occurring from some breaking or parting. 2.
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Horizontal fissure Horizontal fissure. Dr Jeremy Jones ◉ et al. The horizontal fissure (also called the minor fissure) is a unilateral structure in the right lung that separates the right middle lobe from the right upper lobe.
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- Chest Radiology > Anatomy > Lobes & Fissures. On the PA chest xray, the minor fissure divides the right middle lobe from the right upper lobe and is sometimes not well seen. There is no minor fissure on the left. The major fissures are usually not well seen on the PA view because you are looking through them obliquely.
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Chest X-ray Anatomy Lung lobes and fissures 1 The left lung has two lobes and the right has three. 2  Each lobe has its own pleural covering. 3  The horizontal fissure (right) is often seen on a normal frontal view.  The oblique fissures are often seen on a normal lateral view.
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Sulcus (neuroanatomy) Structure [edit]. Sulci are one of three parts of the cerebral cortex, the others being the gyri and the fissures. The three different parts create a larger surface area for the human brain and other mammalian brains. When looking at the human brain, two-thirds of the surface is hidden in the grooves.The sulci and fissures are both grooves in the cortex but they are differentiated by size. A sulcus is a shallower groove that surrounds a gyrus.hen looking at the human brain, two-thirds of the surface is hidden in the grooves. The sulci and fissures are both grooves in the cortex but they are differentiated by size. A sulcus is a shallower groove that surrounds a gyrus.
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fissure 3 a lineal fault on a bony surface that occurs during the development of a part, such as a fissure in the enamel of a tooth. A fissure is usually deeper than a sulcus, but in the terminology of anatomy fissure and sulcus are often used interchangeably. Also called fissura. fissured, adj.Dermatology A groove, cleft, or sulcus, which may or may not be normal.. porta hepatis. 2. the transverse cerebral fissure between the diencephalon and the cerebral hemispheres; called also fissure of Bichat. zygal fissure any of the fissures on the cerebral cortex that consist of two branches connected by a stem.
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- Fissure is defined as a long, narrow opening or line of breakage in the form of a crack, split or groove. Fissured tongue is a rare condition that is characterized by grooves or furrows appear along the dorsum (Upper part) and lateral (toward the side) of the tongue.Fissure can be shallow, but it may also varies in-depth approximately as deep as 6 millimiters, can be single or multiple.issure is defined as a long, narrow opening or line of breakage in the form of a crack, split or groove. Fissured tongue is a rare condition that is characterized by grooves or furrows appear along the dorsum (Upper part) and lateral (toward the side) of the tongue.
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What Is a Vaginal Fissure? A fissure is medically defined as a crack or breach in the lining surface. This can be the skin or the mucous membrane. Fissures can occur anywhere over the body.They are found in the vaginal area also.This area is very delicate and richly supplied by nerves.reatment. Since the area is richly supplied by blood vessels, most of the small crack may heal by themselves over time. The natural vaginal secretions provide a protective cover against infections for all cuts and abrasions in the region. Bigger cracks may require medical treatment.
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sylvian fissure posterior median fissure. 1. a shallow vertical groove in the closed part of the medulla oblongata, continuous with the posterior median fissure of the spinal cord. 2. a shallow vertical groove dividing the spinal cord throughout its length in the midline posteriorly; called also posterior median sulcus.
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Lateral View of the Brain Sulci are small grooves, but there are also large grooves, and these are called fissures. Fissures divide the cerebral cortex into lobes and also divide the cerebrum into the right and left cerebral hemispheres along the saggital plane.
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Chapter 5 Liver main lobar fissure. divides the right and left lobes of the liver; seen in the sagittal plane as an echogenic line between the gallbladder neck and the main portal vein. porta hepatis. knows as the gate to the liver, a fissure where the portal vein and hepatic artery enter the liver and the common hepatic duct exits.
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Nervous System Anatomy 1 Central sulcus or Rolando's fissure: separates the brain's frontal and parietal lobes. 2  Clevenger's fissure: found in the inferior temporal lobe of the brain. 3  Collateral fissure: found in the inferior surface of the cerebrum. Medial longitudinal fissure or Longitudinal fissure: which divides the cerebrum into the two hemispheres. 2  Fissure of Bichat: found below the corpus callosum in the cerebellum of the brain. 3  Broca's fissure: found in the third left frontal fold of the brain.
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oblique fissure of lung ob·lique fis·sure of lung. [TA] the deep fissure in each lung that runs obliquely downward and forward. It divides the upper and lower lobes of the left lung and separates the upper and middle lobes from the lower lobe of the right lung. Synonym(s): fissura obliqua pulmonis [TA], major fissure, oblique fissure.
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Anal Fissures What is an anal fissure? An anal fissure is a tear in the lining of the anus or anal canal (the opening through which stool passes out of the body). The fissure can be painful and may bleed. What are the signs and symptoms of an anal fissure? Signs and symptoms include: Pain during, and even hours after -- a bowel movement; Constipation
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Anal Fissure Symptoms, Treatment Relief, and Cure Fissures usually cause pain during bowel movements that often is severe. Anal fissure is the most common cause of rectal bleeding in infancy. Anal fissures occur in the specialized tissue that lines the anus and anal canal, called anoderm.At a line just inside the anus (referred to as the anal verge or intersphincteric groove) the skin (dermis) of the inner buttocks changes to anoderm.issures usually cause pain during bowel movements that often is severe. Anal fissure is the most common cause of rectal bleeding in infancy. Anal fissures occur in the specialized tissue that lines the anus and anal canal, called anoderm.
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fissure hippocampal fissure one extending from the splenium of the corpus callosum almost to the tip of the temporal lobe; called also hippocampal sulcus. longitudinal fissure the deep fissure between the two cerebral hemispheres.nterpalpebral fissure See palpebral aperture. optic fissure An invagination of the inferior portion of the optic stalk of the embryo. The hyaloid vessels pass through that fissure to supply the developing crystalline lens.
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Overview By Mayo Clinic Staff. Print. An anal fissure is a small tear in the thin, moist tissue (mucosa) that lines the anus. An anal fissure may occur when you pass hard or large stools during a bowel movement. Anal fissures typically cause pain and bleeding with bowel movements. You also may experience spasms in the ring of muscle at the end of your anus (anal sphincter).
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- Definition of fissure. 1 : a narrow opening or crack of considerable length and depth usually occurring from some breaking or parting a fissure in the earth's crust. 2a : a natural cleft between body parts or in the substance of an organb : a break or slit in tissue usually at the junction of skin and mucous membrane.