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Sinus
Sinus Paranasal sinuses. Air cavities within the facial bones, lined by mucous membranes similar to those in other parts of the airways.
RELATED TERMS--------------------------------------
Cavities
Holes in the two outer layers of a tooth called the enamel and the dentin. The enamel is the outermost white hard surface and the dentin is the yellow layer just beneath enamel. Both layers serve to protect the inner living tooth tissue called the pulp, where blood vessels and nerves reside. Small cavities may not cause pain, and may be unnoticed by the patient. Larger cavities can collect food, and the inner pulp of the affected tooth can become irritated by bacterial toxins, foods that are cold, hot, sour, or sweet - causing toothache. Also referred to as caries.
Mucous
Adj. Relating to or resembling mucus.
Membranes
Also know as the bag of waters, this thin sac contains the amniotic fluid and the fetus. The membranes will either rupture spontaneously during labor or be ruptured to speed up labor.
SIMILAR TERMS--------------------------------------
Sinus node
The cells that produce the electrical impulses that cause the heart to contract.
Sinus rythm
A normal heart rythm being generated by the SA node.
Sinus tachycardia
A normal, but fast rythm being generated by the SA node. This is very different than the term Ventricular Tachycardia.
Sinusitis
Inflammation of the sinuse (hollow spaces in the bone of the cheeks and forehead), due to an infection or an allergic reaction. Probably the most common cause of pain in and around the eye. Symptoms include head pain (headache, pain around the eyes, toothache, jaw pain), nasal discharge, postnasal drip, coughing, eyelid swelling, swelling around the eyes, a stuffy nose, fatigue, bad breath and a sore throat.
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Shwachman's syndrome
A digestive and respiratory disorder of children. Certain digestive enzymes are missing and white blood cells are few. Symptoms may include diarrhea and short stature.
Silent ischemia
Ischemia not accompanied by chest pain.
Sigmoid colon
The lower part of the colon that empties into the rectum.
Sigmoidoscopy
Looking into the sigmoid colon and rectum with a flexible or rigid tube, called a sigmoidoscope.
Squamous intraepithelial lesion (SIL)
Like CIN, SIL is a term used to classify the degree of precancerous change in cells of the cervix in a condition called cervical dysplasia.
Sinus
Sinus node
The cells that produce the electrical impulses that cause the heart to contract.
Sitz bath
A special plastic tub. A person sits in a few inches of warm water to help relieve discomfort of hemorrhoids or anal fissures.
Small bowel enema
X-rays of the small intestine taken as barium liquid passes through the organ. Also called small bowel follow-through. See also lower GI series.
Small intestine
Organ where most digestion occurs. It measures about 20 feet and includes the duodenum, jejunum, and ileum.
Soft-tissue
Generally, the ligaments, tendons, and muscles in the musculoskeletal system.
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