Arachnoid Mater: From 1 Different Sources
The middle of the 3 layers of membrane (meninges) that cover the brain.
The branch of medical study which deals with the sources, preparations and uses of drugs. (See MEDICINES.)... materia medica
The outermost and strongest of the three membranes or meninges which envelop the brain and spinal cord. In it run vessels which nourish the inner surface of the skull. (See BRAIN.)... dura mater
The membrane closely investing the BRAIN and SPINAL CORD, in which run blood vessels for the nourishment of these organs.... pia mater
One of the membranes covering the brain and spinal cord (see BRAIN). Arachnoiditis is the name applied to in?ammation of this membrane.... arachnoid membrane
(arachnoid mater) n. the middle of the three membranes covering the brain and spinal cord (see meninges), which has a fine, almost cobweb-like, texture. Between it and the pia mater within lies the subarachnoid space, containing cerebrospinal fluid and large blood vessels; the membrane itself has no blood supply.... arachnoid
one of the thin-walled projections outwards of the arachnoid membrane into the blood-filled sinuses of the dura, acting as a one-way valve for the flow of cerebrospinal fluid from the subarachnoid space into the bloodstream. Large villi, known as arachnoid granulations (or Pacchionian bodies), are found in the region of the superior sagittal sinus. They may be so distended as to cause pitting of the adjacent bone.... arachnoid villus
deaths of women while pregnant or within 42 days of the end of the pregnancy from any cause related to, or aggravated by, the pregnancy or its management, but not from accidental or incidental causes. These deaths can be subdivided into four main categories: (1) direct deaths: directly related to pregnancy; (2) indirect deaths: due to pre-existing maternal disease aggravated by pregnancy; (3) coincidental: unrelated to pregnancy; (4) late deaths: occurring between six weeks and one year following delivery. See also maternal mortality rate.... maternal death
the number of deaths due to complications of pregnancy, childbirth, and the puerperium per 100,000 live births (see also stillbirth). In 1952 concern about maternal mortality resulted in Britain in the setting up of a triennial *confidential enquiry into every such death to identify any shortfall in resources or care. The first triennial report was published in 1985. Since 2014 reports have been produced annually by MBRRACE-UK (Mothers and Babies: Reducing Risk through Audits and Confidential Enquiries Across the UK). Levels of *maternal deaths are currently low: a report published in 2017 (covering 2013–15) counted 202 obstetric-related deaths (8.76 per 100,000 live births). Thromboembolism was the commonest direct cause of death (30 deaths, 1.13 per 100,000 live births), while heart disease was the commonest indirect cause of death (54 deaths, 2.34 per 100,000 live births).... maternal mortality rate
a material exhibiting both viscous and elastic properties. It is used in ophthalmic surgery to help maintain the shape of ocular tissues as well as lubricate and minimize trauma. It is commonly used in intraocular surgery, such as cataract surgery. Viscoelastic materials are also used in dentistry for impression and filling materials.... viscoelastic material
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