sinus

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Related to sinus tarsi: Sustentaculum tali, tarsal canal

sinus,

cavity or hollow space in the body, usually filled with air or blood. In humans the paranasal sinuses, mucus-lined cavities in the bones of the face, are connected by passageways to the nose and probably help to warm and moisten inhaled air. When drainage from them is blocked, as after a cold, these sinuses often become infected, a condition called sinusitis. The accumulation of pus results in pressure, headaches, pain, and general discomfort. In invertebrates one of the spaces among the muscles and viscera through which blood returns to the heart is also known as a sinus.

sinus

(sÿ -nŭs) A semienclosed break along the borders of a lunar mare or in a scarp. The word is used in the approved name of such a feature on the Moon. (Latin: bay)

Sinus

 

in anatomy, a cavity, protrusion, or long closed channel. In vertebrates (including man), the term “sinus” refers to a channel filled with venous blood in the dura mater. The cavity in some cranial bones is also called a sinus. [23–1297–]

sinus

[′sī·nəs]
(biology)
A cavity, recess, or depression in an organ, tissue, or other part of an animal body.

sinus

1. Anatomy
a. any bodily cavity or hollow space
b. a large channel for venous blood, esp between the brain and the skull
c. any of the air cavities in the cranial bones
2. Pathol a passage leading to a cavity containing pus
3. Botany a small rounded notch between two lobes of a leaf, petal, etc.
4. an irregularly shaped cavity
References in periodicals archive ?
My ankle gives way" is probably the second most common leftover problem with ankle sprains after the sinus tarsi syndrome.
The head and neck regions are richly supplied by the superior neck vessels and the artery of the sinus tarsi and osteonecrosis of these areas is extremely rare whereas lateral 1/2 of the talar body is vulnerable because of its precarious blood supply and degree of displacement of the body, osteonecrosis rates can be 100%.
Bony changes seen with subtalar instability and inflammatory arthropathies are discussed with sinus tarsi pathology.
Finally, the deep layer of the lateral ligamentous complex contains the medial root of the inferior extensor retinaculum, which courses more deeply in the sinus tarsi and sends attachments to both the talus and the calcaneus adjacent to the interosseous talocalcaneal ligament (IOL).