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Foramen of Magendie

1. Drains CSF from the fourth ventricle into the cisterna magna. The two other openings of the fourth ventricle are lateral apertures (foramina of Luschka), one on the left and one on the right, which drain cerebrospinal fluid into the cerebellopontine angle cistern. The median foramen on axial images is posterior to the pons and anterior to the caudal cerebellum. It is surrounded by the obex and gracile tubercles of the medulla, tela choroidea of the fourth ventricle and its choroid plexus, which is attached to the cerebellar vermis. ( 2. A passage through the midline of the roof of the fourth ventricle of the brain that gives passage to the cerebrospinal fluid from the ventricles to the subarachnoid space. ( 3. One of the foramina in the ventricular system and links the fourth ventricle and the quadrigeminal cistern. It is one of the three ways that CSF can leave the fourth ventricle and enter the subarachnoid space. ( 4. An opening from the fourth ventricle in the brain to the central canal of the upper end of the spinal cord. ( Syn: Medial aperture, median aperture Word origin: From Latin foramen “hole, opening, aperture, orifice,” from forare “to...

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/ˈfôrsəps/ /-ˌseps/ Noun, pl. forceps or forcipes or forcepses (Medicine) 1. A handheld, hinged instrument used for grasping and holding objects. Forceps are used when fingers are too large to grasp small objects or when many objects need to be held at one time while the hands are used to perform a task. The term ‘forceps’ is used almost exclusively within the medical field. Outside medicine, people usually refer to forceps as tweezers, tongs, pliers, clips or clamps. ( 2. A pair of pinchers, or tongs; an instrument for grasping, holding firmly, or exerting traction upon, bodies which it would be inconvenient or impracticable to seize with the fingers, especially one for delicate operations, as those of watchmakers, surgeons, accoucheurs, dentists, etc. A pliers-like medical instrument used to grasp tissue. ( 3. an extractor consisting of a pair of pincers used in medical treatment (especially for the delivery of babies). ( (Zoology) 1. The caudal forceps-shaped appendage of earwigs and some other insects. ( Note: ‘Forceps‘ can be used as both the singular and plural form of the word. (Example: “I need a forceps.”) Also, it is not referred to as a “pair” as one refers to a “pair of scissors”. ( Word origin: from Latin forceps “pair of tongs, pincers,” compound of formus “hot” + root of capere “to hold, take”. Originally a smith’s implement. The classical plural...

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/ˈfôrˌärm/ Noun, pl. forearms 1. The structure and distal region of the upper limb, between the elbow and the wrist. The term forearm is used in anatomy to distinguish it from the arm, a word which is most often used to describe the entire appendage of the upper limb, but in anatomy, technically, it means only the region of the upper arm, whereas the lower “arm” is called the forearm. 2. Part of the arm, extending from the elbow to the wrist. ( 3. The part of the superior limb between the elbow and the wrist. ( Syn: Antebrachium Word origin: From Old English fore-, meaning “before”, superior, front +...

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