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sinus    音标拼音: [s'ɑɪnəs]
n. 窦,静脉窦,湾,下陷或凹下去的地方

窦,静脉窦,湾,下陷或凹下去的地方

sinus
n 1: an abnormal passage leading from a suppurating cavity to
the body surface [synonym: {fistula}, {sinus}]
2: any of various air-filled cavities especially in the bones of
the skull
3: a wide channel containing blood; does not have the coating of
an ordinary blood vessel [synonym: {venous sinus}, {sinus}]

Sinus \Si"nus\, n.; pl. L. {Sinus}, E. {Sinuses}. [L., a bent
surface, a curve, the folds or bosom of a garment, etc., a
bay. Cf. {Sine}, n.]
1. An opening; a hollow; a bending.
[1913 Webster]

2. A bay of the sea; a recess in the shore.
[1913 Webster]

3. (Anat. & Zool.) A cavity; a depression. Specifically:
(a) A cavity in a bone or other part, either closed or
with a narrow opening.
(b) A dilated vessel or canal.
[1913 Webster]

4. (Med.) A narrow, elongated cavity, in which pus is
collected; an elongated abscess with only a small orifice.
[1913 Webster]

5. (Bot.) A depression between adjoining lobes.
[1913 Webster]

Note: A sinus may be rounded, as in the leaf of the white
oak, or acute, as in that of the red maple.
[1913 Webster]

{Pallial sinus}. (Zool.) See under {Pallial}.

{Sinus venosus}. [L., venous dilatation.] (Anat.)
(a) The main part of the cavity of the right auricle of
the heart in the higher vertebrates.
(b) In the lower vertebrates, a distinct chamber of the
heart formed by the union of the large systematic
veins and opening into the auricle.
[1913 Webster]


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  • Sinus Infection (Sinusitis): Causes, Symptoms Treatment
    Sinusitis is an inflammation, or swelling, of the tissue lining your sinuses Sinuses are structures inside your face that are normally filled with air Bacterial infections, viral infections and allergies can irritate them, causing them to get blocked and filled with fluid
  • Sinus (anatomy) - Wikipedia
    A sinus is a sac or cavity in any organ or tissue, or an abnormal cavity or passage In common usage, "sinus" usually refers to the paranasal sinuses, which are air cavities in the cranial bones, especially those near the nose and connecting to it
  • Sinus infection: 11 symptoms and treatments - Medical News Today
    Sinus infections, or sinusitis, occur when a virus of bacteria enters the sinuses Read on for a list of common symptoms and treatments
  • What’s causing your sinus trouble? - Mayo Clinic Press
    Sinus pain and discomfort typically starts when your sinuses become irritated and inflamed, causing swelling that can narrow or close off the openings This makes it hard for mucus to drain out of your sinus cavities Mucus and air pressure build, causing a feeling of stuffiness and congestion
  • What Are Sinuses? Causes, Symptoms Best Ways to Treat Them
    The sinuses are air-filled cavities located in the bones around the nose, eyes, and forehead Their main role is to humidify and filter the air we breathe, lighten the skull, and enhance the resonance of the voice
  • Sinus Infection (Sinusitis): Symptoms, Causes, Duration, and . . . - WebMD
    Sinusitis, also known as a sinus infection, can cause symptoms such as facial pain, congestion, and headache
  • Paranasal Sinuses: Anatomy, Function Types - Cleveland Clinic
    Technically speaking, “sinus” is a broad medical term that may refer to different air-filled cavities inside a bone or another type of tissue, like a blood vessel
  • How to Get Rid of a Sinus Infection - Healthline
    What causes a sinus infection? A sinus infection occurs when the tissue in the sinuses swells up This leads to a buildup of mucus, pain, and discomfort
  • Sinusitis - Wikipedia
    Sinusitis, also known as rhinosinusitis and commonly known as a sinus infection, is an inflammation of the mucous membranes that line the sinuses resulting in symptoms that may include production of thick nasal mucus, nasal congestion, facial congestion, facial pain, facial pressure, loss of smell, or fever [6][2]
  • Sinus Cavities in the Head: Anatomy, Diagram Pictures
    As you breathe in air through your nose and mouth, it moves through the sinus passages The sinuses also produce mucus that coats and lubricates your nasal passages and the sinuses themselves





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